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smsc usb3503a revision 1.1 (02-07-13) datasheet datasheet product features usb3503 usb 2.0 hsic high-speed hub controller optimized for portable applications features ? integrated usb 2.0 compatible 3-port hub. ? hsic upstream port ? advanced power saving features ?1 a typical standby current ? port goes into power saving state when no devices are connected downstream ? port is shutdown when port is disabled. ? digital core shut down in standby mode ? supports either single-tt or multi-tt configurations for full-speed and low-speed connections. ? enhanced configuration opt ions available through serial i2c slave port ? vid/pid/did ? string descriptors ? configuration options for hub. ? internal default configuration option when serial i2c host not available. ? multitrak tm ? dedicated transaction translator per port. ? portmap ? configurable port mapping and disable sequencing. ? portswap ? configurable differential in tra-pair signal swapping. ? phyboost tm ? programmable usb transceiver drive strength for recovering signal integrity ? varisense tm ? programmable usb receiver sensitivity ? flexpwr ? technology ? low current design ideal for battery powered applications ? internal supply switching provides low power modes ? external 12, 19.2, 24, 25, 26, 27, 38.4, or 52 mhz clock input ? internal 3.3v & 1.2v voltage regulators for single supply operation. ? external vbat and 1.8v dual supply input option ? internal short circuit protection of usb differential signal pins. ? usb port esd protection ( dp / dm ) ? 15kv (air and contact discharge) ? iec 61000-4-2 level 4 esd protection without external devices ? 25-pin wlcs (1.97mm x 1.97mm wafer level chip scale) package - 0.4mm ball pitch applications the usb3503 is targeted for applications where more than one usb port is required. as mobile devices add more features and the syst ems become more complex it is necessary to have more than one usb port to take communicate with the internal and peripheral devices. ? mobile phones ? tablet computers ? ultra mobile pcs ? digital still cameras ? digital video camcorders ? gaming consoles ? pdas ? portable media players ? gps personal navigation devices ? media players/viewers
order number(s): this product meets the halogen maximum concentration values per iec61249-2-21 for rohs compliance and environmen tal information, please visit www.smsc.com/rohs please contact your smsc sales representative fo r additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. order number temperature range package type reel size USB3503A-1-GL-TR 0c to 70c 25-ball wlcsp 3000 pieces usb3503ai-1-gl-tr -40c to 85c 25-ball wlcsp 3000 pieces usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet revision 1.1 (02-07-13) 2 smsc usb3503a datasheet copyright ? 2013 smsc or its subsidiaries. all rights reserved. circuit diagrams and other information relating to smsc products are included as a means of illustrating typical applications. consequently, complete information sufficient for construction purposes is not necessarily given. although the information has been checked and is believed to be accurate, no re sponsibility is assumed for inaccuracies. smsc reserves the right to make changes to specifications and product descriptions at any time without notice. contact your local sm sc sales office to obtain the latest specifications before placing your product order. the provision of this information does not convey to the purchaser of the described semicond uctor devices any licenses under any patent rights or other intellectual property rights of smsc or others. all sales are expressly conditional on your agreement to the te rms and conditions of the most recently dated version of smsc's standard terms of sale agreement dated before the date of your order (the "terms of sale agreement"). the pro duct may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. anomaly sheets are availab le upon request. smsc products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. any and all such uses without prior written approval of an officer of smsc and further testing and/or modification will be fully at the risk of the customer. copies of this document or other smsc literature, as well as the terms of sale agreement, may be obtained by visiting smsc?s website at h ttp://www.smsc.com. smsc is a registered trademark of standard microsystems corporation (?smsc?). product names and company names are the trademarks of their respective holders. the microchip name and logo, and the microchip logo are registered trademarks of microchip technology incorporated in the u.s.a . and other countries. smsc disclaims and excludes any and all w arranties, including without li mitation any and all implied warranties of merchantabil ity, fitness for a particular purpose, title, and against infringement and the like, and any and all warranties arising from any cou rse of dealing or usage of trade. in no event shall smsc be liabl e for any direct, incidental, indi rect, special, punitive, or cons equential damages; or for lost data, profits, savings or revenues of any kind; regardless of the form of action, whether based on contrac t; tort; negligence of smsc or others; strict liability; breach of warranty; or otherwise; whether or not any remedy of buyer is h eld to have failed of its essential purpose, and whether or not smsc has been advised of the possibility of such damages.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 3 revision 1.1 (02-07-13) datasheet table of contents chapter 1 general description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.1 customer selectable features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.1.1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 chapter 2 acronyms and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.1 acronyms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 reference documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 chapter 3 usb3503 pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2 signal definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.3 pin descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3.1 pin definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3.2 i/o type descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.3.3 reference clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.3.4 interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 chapter 4 modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 4.1 operational mode flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.2 standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.2.1 external hardware reset_n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3 hub mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3.1 hub initialization stage (hub.init) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3.2 hub wait refclk stage (hub.waitref). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3.3 hub configuration stage (hub.config). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.3.4 hub connect stage (hub.connect) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.3.5 hub communication stage (hub.com) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.3.6 hub mode timing diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 chapter 5 configuration options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.1 hub configuration options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.1.1 multi/single tt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.2 default serial interface register me mory map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.3 serial interface register definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.1 register 00h: vendor id (lsb) - vidl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.2 register 01h: vendor id (msb) - vidm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.3 register 02h: product id (lsb) - pidl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.4 register 03h: product id (msb) - pidm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.5 register 04h: device id (lsb) - didl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.3.6 register 05h: device id (msb) - didm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.3.7 register 06h: config_byte_1 - cfg1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5.3.8 register 07h: configuration data byte 2 - cfg2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.3.9 register 08h: configuration data byte 3 - cfg3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.3.10 register 09h: non-removable device - nrd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.3.11 register 0ah: port disable for self powered operatio n - pds . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.3.12 register 0bh: port disable for bus powered operation - pdb . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.3.13 register 0ch: max po wer for self powered operation - maxps . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.3.14 register 0dh: max po wer for bus powered operation - maxpb . . . . . . . . . . . . . . . . . . . . . . . . . 32
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 4 revision 1.1 (02-07-13) datasheet 5.3.15 register 0eh: hub controller max current for se lf powered operation - hcmcs. . . . . . . . . . . . 33 5.3.16 register 0fh: hub controller max current for bus powered operation - hcmcb . . . . . . . . . . . . 33 5.3.17 register 10h: power-on time - pwrt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5.3.18 register 11h: language id high - langidh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 5.3.19 register 12h: language id low - langidl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.3.20 register 13h: manufacturer string length - mfrsl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 5.3.21 register 14h: product string length - prdsl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.3.22 register 15h: serial string length - sersl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.3.23 register 16h-53h: manufacturer string - manstr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 5.3.24 register 54h-91h: product string - prdstr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 5.3.25 register 92h-cfh: serial string - serstr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 5.3.26 register d0: downstream battery charging enable - bc _en . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 5.3.27 register e5h: port power status - prtpwr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 5.3.28 register e6h: over current sense control - ocs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 5.3.29 register e7h: serial port interlock control - sp_ilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 5.3.30 register e8h: serial port interrupt status - int_status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 5.3.31 register e9h: serial port interrupt mask - int_mask. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8 5.3.32 register eeh: configure portable hub - cfgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.3.33 register f4h: varisense_up3 - vsnsup3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 5.3.34 register f5h: varisense_21 - vsns21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5.3.35 register f6h: boost_up3 - bstup3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5.3.36 register f8h: boost_21 - bst21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.3.37 register fah: port swap - prtsp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.3.38 register fbh: port remap 12 - prtr12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 5.3.39 register fch: port remap 34 - prtr34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.3.40 register ffh: status/command - stcd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 chapter 6 serial slave interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.2 interconnecting the usb3503 to an i2c ma ster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 6.3 i2c message format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 6.3.1 sequential access writes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 6.3.2 sequential access reads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 6.3.3 i2c timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 chapter 7 usb descriptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 7.1 usb bus reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 7.2 hub attached as a high-speed device (customer-configured for single-tt support only) . . . . . . . 49 7.2.1 standard device descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 7.2.2 configuration descriptor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 7.2.3 interface descriptor (single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 7.2.4 endpoint descriptor (single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 7.3 hub attached as a high-speed device (customer-conf igured as multi-tt capable) . . . . . . . . . . . . 52 7.3.1 standard device descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 7.3.2 configuration descriptor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 7.3.3 interface descriptor (single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 7.3.4 endpoint descriptor (single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 7.3.5 interface descriptor (multi-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 7.3.6 endpoint descriptor (multi-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 7.4 class-specific hub descriptor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 7.5 string descriptors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7.5.1 string descriptor zero (specifies languages supported) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 5 revision 1.1 (02-07-13) datasheet 7.5.2 string descriptor 1 (manufacturer string). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7.5.3 string descriptor 2 (product string) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 7.5.4 string descriptor 3 (serial string). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 chapter 8 battery charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.1 downstream port battery charging suppor t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.1.1 usb battery charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.1.2 special behavior of prtpwr register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 8.1.3 battery charging configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 chapter 9 integrated power regulators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.1.1 3.3v regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.1.2 1.2v regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2 power configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.1 single supply configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.1.1 vbat only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.1.2 3.3v only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.2 double supply configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.2.1 vbat + 1.8v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 9.2.2.2 3.3v + 1.8v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 9.3 regulator control signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 chapter 10 specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 10.1 absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 10.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 10.3 operating current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 10.4 dc characteristics: digital i/o pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 10.5 dc characteristics: analog i/o pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 10.6 dynamic characteristics: digital i/o pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 10.7 dynamic characteristics: analog i/o pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 10.8 regulator output vo ltages and capacitor requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 10.9 esd and latch-up performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 10.10 esd performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10.10.1 human body model (hbm) performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10.10.2 en 61000-4-2 performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10.10.3 air discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10.10.4 contact discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 10.11 ac specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 10.11.1 refclk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 10.11.2 serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 10.11.3 usb 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 10.11.4 usb 2.0 hsic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 chapter 11 application reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 11.1 application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 chapter 12 package outlines, tape & reel drawings , package marking . . . . . . . . . . . . . . 77 chapter 13 datasheet revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 6 revision 1.1 (02-07-13) datasheet list of figures figure 1.1 usb3503 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 figure 3.1 usb3503 25-ball package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 figure 3.2 int_n operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 figure 4.1 modes of operation flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 figure 4.2 timing diagram for hub stages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 figure 6.1 i2c connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 figure 6.2 i2c sequential access write format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 figure 6.3 sequential access read format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 figure 6.4 i2c timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 figure 8.1 battery charging external power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 figure 11.1 internal chip-to-chip interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 figure 11.2 internal chip-to-chip interface with embedded host port . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 figure 12.1 wlcsp25, 1.97x1.97mm body, 0.4mm pitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 figure 12.2 wlcsp25, tape and reel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 figure 12.3 wlcsp25, reel dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 figure 12.4 wlcsp25, tape sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 figure 12.5 reflow profile and critical parameters for lead- free (snagcu) solder. . . . . . . . . . . . . . . . . 80 figure 12.6 package marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 7 revision 1.1 (02-07-13) datasheet list of tables table 3.1 pin descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 3.2 usb3503 i/o type descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 table 3.3 usb3503 primary reference clock frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 table 3.4 usb3503 secondary reference clock frequencies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 table 4.1 controlling modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 table 4.2 timing parameters for hub stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 table 5.1 transaction translator buffer chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 table 5.2 serial interface registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 table 6.1 i2c timing specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 table 7.1 device descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 table 7.2 configuration descriptor (high-sp eed, single-tt only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 table 7.3 interface descriptor (high-speed, single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1 table 7.4 endpoint descriptor (for status change endpoint, single-tt). . . . . . . . . . . . . . . . . . . . . . . . 52 table 7.5 device descriptor (high-speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 table 7.6 configuration descriptor (high-spee d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 table 7.7 interface descriptor (high-speed, single-tt) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 table 7.8 endpoint descriptor (for status change endpoint, single-tt). . . . . . . . . . . . . . . . . . . . . . . . 55 table 7.9 interface descriptor (multi-tt, hig h-speed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 table 7.10 endpoint descriptor (for status change endpoint, mu lti-tt). . . . . . . . . . . . . . . . . . . . . . . . . 56 table 7.11 class-specific hub descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 table 7.12 string descriptor zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 table 7.13 string descriptor 1, manufacturer string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 table 7.14 string descriptor 2, product string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 table 7.15 string descriptor 3, serial string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 table 10.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 table 10.2 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 table 10.3 operating current (dual supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 table 10.4 operating current (single supply). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 table 10.5 digital i/o characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 table 10.6 dc characteristics: analog i/o pins (dp/dm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 table 10.7 dynamic char acteristics: digital i/o pins (reset_n) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 table 10.8 dynamic characteristics: analog i/o pins (dp/dm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 table 10.9 regulator output voltages and capacitor requiremen t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 table 10.10esd and latch-up performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 table 11.1 component values in application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 table 11.2 capacitance values at vbus of usb connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 table 13.1 customer revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 8 revision 1.1 (02-07-13) datasheet chapter 1 general description the smsc usb3503 is a low-power, usb 2.0 hub co ntroller with hsic upstream connectivity and three usb 2.0 downtream ports. the usb3503 operat es as a hi-speed hub and supports low-speed, full-speed, and hi-speed downstream devices on all of the enabled downstream ports. the usb3503 has been specifically optimized for mobile embedded applications. the pin-count has been reduced by optimizing the usb3503 for mobi le battery-powered embedded systems where power consumption, small package size, and minimal bo m are critical design requirements. standby mode power has been minimized. instead of a dedicated crystal, reference cl ock inputs are aligned to mobile applications. flexible integrated power regulators eas e integration into battery powered devices. all required resistors on the usb ports are integrated in to the hub. this includes all series termination resistors on d+ and d? pins and all required pull-down resistors on d+ and d? pins. the usb3503 includes programmable features such as: multitrak tm technology , which utilizes a dedicated transaction translator (tt) per port to maintain consistent full-speed data throughput regardless of the number of active downstream connections. multitrak tm outperforms conventional usb 2.0 hubs with a si ngle tt in usb full-speed data transfers. portmap , which provides flexible port mapping and disable sequences. the downstream ports of a usb3503 hub can be reordered or disabled in any sequence to support multiple platform designs with minimum effort. for any port that is disabled, the usb3503 hub controllers aut omatically reorder the remaining ports to match the usb host controller?s port numbering scheme. portswap , which adds per-port programmability to usb differential-pair pin locations. portswap allows direct alignment of usb signals (d+/d-) to connectors to avoid uneven trace length or crossing of the usb differential signals on the pcb. phyboost , which provides programmable levels of hi-speed usb signal drive strength in the downst ream port transceivers. phyboost attempts to restore usb signal integrity in a compromised system environment. the graphic on the right shows an example of hi- speed usb eye diagrams before and after phyboost signal integrity restoration. varisense , which controls the usb receiver sensitivit y enabling programmable levels of usb signal receive sensitivity. this capabilit y allows operation in a sub-optima l system environment, such as when a captive usb cable is used.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 9 revision 1.1 (02-07-13) datasheet 1.1 customer selectable features a default configuration is available in the usb3503 following a reset. this configuration may be sufficient for most applications. the usb35 03 hub may also be configured by an external microcontroller. when using the microcontr oller interface, the hub appears as an i 2 c slave device. the usb3503 hub supports customer selectable features including: ? optional customer configuration via i 2 c. ? supports compound devices on a port-by-port basis. ? customizable vendor id, product id, and device id. ? configurable downstream port powe r-on time reported to the host. ? supports indication of the maxi mum current that the hub consum es from the usb upstream port. ? supports indication of the maximum current required for the hub controller. ? configurable as a either a self-powered or bus-powered hub ? supports custom string descriptors (up to 30 characters): ? product string ? manufacturer string ? serial number string ? when available, i 2 c configurable options for defaul t configuration may include: ? downstream ports as non-removable ports ? downstream ports as disabled ports ? usb signal drive strength ? usb receiver sensitivity ? usb differential pair pin location
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 10 revision 1.1 (02-07-13) datasheet 1.1.1 block diagram figure 1.1 usb3503 block diagram upstream hsic upstream hsic port repeater controller sie serial interface pll ref_clk to i2c master routing & port re-ordering logic scl sda port controller phy#3 usb data downstream mode control - standby hub mode tt #3 tt #2 tt #1 phy#2 phy#1 usb data downstream usb data downstream 1.2v reg reset_n 3.3v reg int_n hub_connect vdd33_byp vdd12_byp vbat vdd_core_reg
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 11 revision 1.1 (02-07-13) datasheet chapter 2 acronyms and definitions 2.1 acronyms ep: endpoint fs: full-speed hs: hi-speed i 2 c ? : inter-integrated circuit 1 ls: low-speed hsic: high-speed inter-chip 2.2 reference documents 1. usb engineering change notice dated december 29th, 2004, unicode utf-16le for string descriptors . 2. universal serial bus specification , revision 2.0, dated april 27th, 2000. 3. battery charging specification , revision 1.1, release candi date 10, dated sept. 22, 2008 4. high-speed inter-chip usb electrical specification , version 1.0, dated sept. 23, 2007 smsc makes no warranties, express, implied, or statutory, in regard to infringement or other violation of intellect ual property rights. smsc di sclaims and excludes any and all warranties against infringement and the like. no license is granted by smsc expres sly, by implication, by estoppel or otherwise, under any patent, trademark, copyright, mask work right, trade secret, or other intellec tual property right. **to obtain this software program the appropriate smsc software license agreement must be exec uted and in effect. forms of these software license agreements may be obtained by contacting smsc. 1. i 2 c is a registered trademark of philips corporation.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 12 revision 1.1 (02-07-13) datasheet chapter 3 usb3503 pin definitions 3.1 pin configuration the illustration below shows the package diagram. 3.2 signal definitions figure 3.1 usb3503 25-ball package wlcsp pin name description e2 data upstream hsic data pin of the usb interface e1 strobe upstream hsic strobe pin of the usb interface a5 vdd33_byp 3.3 v regulator bypass c4 prtpwr port power control output b4 ocs_n over current sense input a1 usbdn1_dp usb downstream port 1 d+ data pin a e d c b 15 4 3 2 top view
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 13 revision 1.1 (02-07-13) datasheet b1 usbdn1_dm usb downstream port 1 d- data pin c2 usbdn2_dp usb downstream port 2 d+ data pin d2 usbdn2_dm usb downstream port 2 d- data pin c1 usbdn3_dp usb downstream port 3 d+ data pin d1 usbdn3_dm usb downstream port 3 d- data pin e5 scl i 2 c clock input d5 sda i 2 c bi-directional data pin e3 reset_n active low reset signal b5 hub_connect hub connect c5 int_n active low interrupt signal d4 ref_sel1 reference clock select 1 input e4 ref_sel0 reference clock select 0 input b3 refclk reference clock input a4 rbias bias resistor pin d3 vdd12_byp 1.2 v regulator a2 vdd33_byp 3.3 v regulator b2 vbat voltage input from the battery supply a3 vdd_core_reg power supply input to 1.2v regulator for digital logic core c3 vss ground wlcsp pin name description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 14 revision 1.1 (02-07-13) datasheet 3.3 pin descriptions this section provides a detailed description of each signal. the signals are arranged in functional groups according to their associated interface. the terms assertion and negation are used. this is done to avoid confusion when working with a mixture of ?active low? and ?active high? signal. the term ?assert?, or ?assertion? indicates that a signal is active, independent of whether that level is repres ented by a high or low voltage. the term ?negate?, or ?negation? indicates that a signal is inactive. 3.3.1 pin definition table 3.1 pin descriptions name symbol type description upstream high speed inter-chip interface hsic clock/strobe strobe i/o hsic upstream hub strobe pin hsic data data i/o hsic upstream hub data pin high-speed usb data & port disable strap option usbdn_dp[2:1] & usbdn_dm[2:1] a-i/o these pins connect to the downstream usb peripheral devices attached to the hub?s ports downstream port disable strap option: this pin will be sampled at reset_n negation to determine if the port is disabled. both usb data pins for the corresponding port must be tied to vdd 33_byp to disable the associated downstream port. hs usb data usbdn_dp[3] & usbdn_dm[3] a-i/o these pins connect to the downstream usb peripheral devices attached to the hub?s ports. there is no downstream port disable strap option on these ports. serial port interface serial data sda i/od i 2 c serial data serial clock scl i serial clock (scl)
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 15 revision 1.1 (02-07-13) datasheet interrupt int_n od interrupt the function of this pin is determined by the setting in the cfgp.intsusp configuration register. when cfgp.intsusp = 0 (general interrupt) a transition from high to low identifies when one of the interrupt enabled status registers has been updated. soc must update the serial port interrupt status register to reset the interrupt pin high. when cfgp.intsusp = 1 (suspend interrupt) indicates usb state of the hub. ?asserted? low = unconfigured or configured and in usb suspend ?negated? high = hub is configured, and is active (i.e., not in suspend) if unused, this pin must be tied to vdd33_byp . over current sense ocs_n i over current sense - input from external current monitor indicating an over-current condition on port 3 or on ganged supply. negated high = no over current fault detected asserted low = over current fault reported port power prtpwr od port power control- enables power to usb peripheral devices downstream on port 3 or on ganged supply. asserted high = external device should provide power for port(s). negated low = external device should disable power to port(s). misc reference clock input refclk i reference clock input. reference clock select ref_sel[1:0] i the refe rence select input must be set to correspond to the frequency applied to the refclk input. the customer should tie these pins to ground or vdd33_byp. this input is latched during hub.init stage. selects input reference clock frequency per ta b l e 3 . 3 . table 3.1 pin descriptions (continued) name symbol type description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 16 revision 1.1 (02-07-13) datasheet reset input reset_n i this active low signal is used by the system to reset the chip and hold the chip in low power standby mode. usb transceiver bias rbias a-i/o a 12.0k (+/- 1%) resistor is attached from ground to this pin to set the tr ansceiver?s internal bias settings. hub connect hub_connect i hub will trans ition to the hub communication stage when this pin is asserted high. it can be used in three different ways: tied to ground - hub will not transition to the hub communication stage unti l connect_n bit of the sp_ilock register is negated. tied to vdd33_byp - hub will automatically transition to the hub communication stage regardless of the setting of the connect_n bit and without pausing for the soc to reference status registers. transition from low to high - hub will transition to the hub communication stage after this pin transitions from low to high. hub_connect should never be driven high when usb3503 is in standby mode. power 1.2v vdd power vdd12_byp power 1.2 v regulator. a 1.0 f (<1 esr) capacitor to ground is required for regulator stability. the capacitor should be placed as close as possible to the usb3503. 3.3v vdd power vdd33_byp power 3.3v regulator. a 4.7 f (<1 esr) capacitor to ground is required for regulator stability. the capacitor should be placed as close as possible to the usb3503. core power supply input vdd_core_reg power power supply to 1.2v regulator. this power pin should be connected to vdd33_byp for single supply applications. refer to chapter 9 for power supply configuration options. battery power supply input vbat power battery power supply. refer to chapter 9 for power supply configuration options. vss vss ground ground table 3.1 pin descriptions (continued) name symbol type description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 17 revision 1.1 (02-07-13) datasheet 3.3.2 i/o type descriptions 3.3.3 reference clock the refclk input is can be driven with a square wave from 0 v to vdd33_byp. the usb3503 only uses the positive edge of the clo ck. the duty cycle is not critical. the usb3503 is tolerant to jitter on the reference cl ock. the refclk jitter should be limited to a peak to peak jitter of less than 1 ns over a 10 s time interval. if this level of jitter is exceeded the usb3503 high speed eye diagram may be degraded. to select the refclk input frequency, the ref_sel pins must be set according to table 3.3 and table 3.4 . to select the primary refclk frequencies defined in table 3.3 , int_n must be sampled high during the hub.init stage. if the int_n pin is not used, the int_n pin should be tied to vdd33_byp. to select the secondary refclk frequencies defined in table 3.4 , int_n must be sampled low during the hub.init stage. if the int_n pin is not used, the int_n pin should be tied to ground. since the int_n pin is open-drain during normal function, selecting the secondary refclk frequencies requires that the int_ n pin be driven low from an external source during hub.init and then, after startup, that external so urce must turn into an input to receive the int_n signal. table 3.2 usb3503 i/o type descriptions i/o type description i digital input. od digital output. open drain. i/o digital input or output. a-i/o analog input or output. power dc input or output. ground ground. table 3.3 usb3503 primary reference clock frequencies ref_sel[1:0] frequency (mhz) ?00? 38.4 ?01? 26.0 ?10? 19.2 ?11? 12.0
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 18 revision 1.1 (02-07-13) datasheet table 3.4 usb3503 secondary reference clock frequencies 3.3.4 interrupt the general interrupt pin (int_n) is intended to communicate a condition change within the hub. the conditions that may cause an interrupt are capt ured within a register mapped to the serial port (register e8h: serial port interrupt status - int_ status). the conditions t hat cause the interrupt to assert can be controlled through use of an interrupt mask register (register e9h: serial port interrupt mask - int_mask). the general interrupt and all interrupt conditions ar e functionally latched and event driven. once the interrupt or any of the conditions have asserted, the status bit will remain asserted until the soc negates the bit using the serial port. the bits will then remain negated until a new event condition occurs. the latching nature of the register causes th e status to remain even if the condition that caused the interrupt ceases to be active. the event driven nature of the regi ster causes the interrupt to only occur when a new event occurs- when a condition is removed and then is applied again. the function of the interrupt and the associated status and masking registers are illustrated in figure 3.2 . registers & register bits shown in the figure are defined in table 5.2, ?serial interface registers,? on page 26 . ref_sel[1:0] frequency (mhz) ?00? 24.0 ?01? 27.0 ?10? 25.0 ?11? 50.0 figure 3.2 int_n operation reserved reserved serial port write logic int_n q q set clr d int_mask <1> <2> <3> <4> q q set clr s r int_status <7> <0> q q set clr s r q q set clr s r q q set clr s r q q set clr s r q q set clr s r int_status<4:0> scl/sda set based on edge detection hub configured by usb host (hubconf) port power register updated (prtpwr) hub in usb suspend mode (suspind) 2to1 mux 1 0 suspended or not configured q q set clr d cfgp.intsusp
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 19 revision 1.1 (02-07-13) datasheet figure 3.2 also shows an alternate configuration option (cfgp.intsusp) for a suspend interrupt. this option allows the user to change the behavior of the int_n pin to become a direct level indication of configuration and suspend status. when selected, the int_n indicates that the entire hub has entered the usb suspend state. note: because int_n is driven low when active, ca re must be taken when selecting the external pullup resistor value for this open drain output. a suff iciently large resistor must be selected to insure suspend current requirements c an be satisfied for the system.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 20 revision 1.1 (02-07-13) datasheet chapter 4 modes of operation the usb3503 provides two modes of operation - standby mode and hub mode - which balance power consumption with functionality. th e operating mode of the usb3503 is selected by setting values on primary inputs according to the table below. 4.1 operational mode flowchart the flowchart in figure 4.1 shows the modes of operation. it also shows how the usb3503 traverses through the hub mode stages (shown in bold.) the flow of control is dictated by control register bits shown in italics as well as other events such as availability of reference clock. refer to section 5.3, "serial interface register definitions," on page 28 for the detailed definition of the control register bits. in this specification register bits are referenc ed using the syntax .. a summary of all registers can be found in table 5.2, ?serial interface registers,? on page 26 . the remaining sections in this chapter provide more detail on each stage and mode of operation. table 4.1 controlling modes of operation reset_n input resulting mode summary 0 standby lowest power mode ? no function other than monitoring reset_n input to move to higher states. all regulators are powered off. 1 hub full feature mode - operates as a configurable usb hub. power consumption based on how many po rts are active, at what speeds they are running and amount of data transferred.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 21 revision 1.1 (02-07-13) datasheet figure 4.1 modes of operation flowchart hub communication stage (usb traffic) hub connect stage hub configuration stage hub wait refclk stage start (soc set pin reset_n=0) host enumerates and configures hub host initiates data transfers to downstream devices soc set pin reset_n=0 system to power down hsic i/f n y legend hub mode standby mode hub initialization stage core regulator enabled power-on-reset pll synchronization timeout or i2c write sp_ilock. config_n =1 i2c write wait for i2c bit sp_ilock.config_n =0 timeout sp_ilock. config_n 0 1 ref_clk available n wait for ref_clk y wait for pin hub_connect=1 or i2c bit sp_ilock.connect_n =0
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 22 revision 1.1 (02-07-13) datasheet 4.2 standby mode standby mode provides a very low power state for maximum power efficiency when no signaling is required. this is the lowest power state. in standby mode all internal regulators are powered off, the pll is not running, and core logic is powered down in order to reduce power. because core logic is powered off, no configuration settings are retain ed in this mode and must be re-initialized after reset_n is negated high. 4.2.1 external hardware reset_n a valid hardware reset is defined as an assertion of reset_n low for a minimum of 100us after all power supplies are within operating range. while reset is asserted, the hub (and its associated external circuitry) enters st andby mode and consumes extrem ely low current as defined in table 10.3 and table 10.4 . assertion of reset_n (external pin) causes the following: ? all downstream ports are disabled. ? all transactions immediately terminate; no states are saved. ? all internal registers return to the default state. ? the pll is halted. after reset_n is negated high in the hub.init stage, the hub reads customer-specific data from the rom. 4.3 hub mode hub mode provides functions of configuration and high speed usb hub operation including connection and communication. upon entering hub mode and initializing internal logic, the device passes through several sequential stages based on a fixed time interval. 4.3.1 hub initialization stage (hub.init) the first stage is the initialization stage and occu rs when hub mode is entered based on the conditions in table 4.1 . in this stage the 1.2v regulator is enabled and stabilizes, internal logic is reset, and the pll locks if a valid refclk is supplied. configuratio n registers are initialized to their default state and ref_sel[1:0] input values are latched. the usb3503 will complete initialization and automatically enter the next stage after t hubinit . because the digital logic within the device is not yet stable, no communication with the device using the serial port is possible. configuration registers are initialized to their default state. 4.3.2 hub wait refclk stage (hub.waitref) during this stage the serial port is not functional. if the reference clock is provi ded before entering hub mode, the u sb3503 will transition to the hub configuration stage without pausi ng in the hub wait refclk stage. otherwise, the usb3503 will transition to the hub configuration stage once a valid reference clock is supplied and the pll has locked. 4.3.3 hub configurati on stage (hub.config) in this stage, the soc has an opportunity to cont rol the configuration of the usb3503 and modify any of the default configuration settings specified in the integrated rom. these settings include usb
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 23 revision 1.1 (02-07-13) datasheet device descriptors, port electrical settings such as phy boost, and control features. the soc implements the changes using the serial slave port in terface to write configurat ion & control registers. see section 5.3.29, "register e7h: serial port interlock control - sp_ilock," on page 37 for definition of sp_ilock register and how it controls progress through hub stages. if the sp_ilock.config_n bit has its default asserted low and the bit is not writ ten by the serial port, then the usb3503 completes configuration without any i2c intervention. if the sp_ilock.config_n bit has its default negated high or the soc negates the bit high using the serial port during t hubconfig , the usb3503 will remain in the hub configuration stage indefinitely. this will allow the soc to update other configuration an d control registers without any remaining time-out restrictions. once the sp_ilock.config_n bit is a sserted low by the soc the device will transition to the next stage. 4.3.4 hub connect stage (hub.connect) next, the usb3503 enters the hub connect stage. see section 5.3.32, "register eeh: configure portable hub - cfgp," on page 39 and section 5.3.29, "register e7h: se rial port inte rlock control - sp_ilock," on page 37 for definition of control registers which affect how the device transitions through the hub stages. by using the appropriate controls, the usb3503 can be set to immediately transition, or instead to remain in the hub connect stage indefinitely unt il one of the soc handshake events occur. when set to wait on the handshake, the soc may read or update any of the serial port registers. once the soc finishes accessing registers and is ready for usb communication to start, it can perform one of the selected handshakes which that caus e the usb3503 to connect within t hubconnect and transition to the hub communication stage. 4.3.5 hub communicati on stage (hub.com) once it exits the hub connect stage, the usb3503 enters hub communication stage. in this stage full usb operation is supported under control of the usb host on the upstream port. the usb3503 will remain in the hub communication stage until the operating mode is changed by the system asserting reset_n low. while in the hub communication stage, communication over the serial port is no longer supported and the resulting behavior of the serial port if accessed is undefined. in order to re-enable the serial port interface, the device must exit hub communication stage. exiting this stage is only possible by entering standby mode. 4.3.6 hub mode timing diagram the following timing diagram shows the progr ession through the stages of hub mode and the associated timi ng parameters.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 24 revision 1.1 (02-07-13) datasheet the following table lists the timing parameters associated with the stages of the hub mode. figure 4.2 timing diagram for hub stages table 4.2 timing parameters for hub stages characteristic symbol min ty p max units conditions hub initialization time t hubinit 34ms hub configuration time-out t hubconfig 94 95 96 ms hub connect time t hubconnect 01 10us reset_n device mode.stage t_hubinit standby hub.init hub.config t_hubconfig hub.connect t_hubconnect hub.com
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 25 revision 1.1 (02-07-13) datasheet chapter 5 configuration options 5.1 hub configuration options the smsc hub supports a number of features (some are mutually e xclusive), and must be configured in order to correctly function when attached to a usb host controller. there are two principal ways to configure the hub: by writing to configuration registers using the seri al slave port, or by internal default settings. any configuration registers which are not written by the serial slave retain their default settings. 5.1.1 multi/single tt smsc?s usb 2.0 hub is fully specification compliant to the universal serial bus specification revision 2.0 april 27,2000 (12/ 7/2000 and 5/28/2002 errata). please reference chapter 11 (hub specification) for general details regarding hub operation and functionality. for performance reasons, the hub provides 1 transacti on translator (tt) per port (defined as multi- tt configuration), and each tt has 1512 bytes of periodic buffer space and 272 bytes of non- periodic buffer space (divided into 4 non-periodic buffers per tt), for a total of 1784 bytes of buffer space for each transaction translator. when configured as a single-tt hub (required by usb 2.0 specification), the single transaction translator will have 1512 bytes of periodic buffer space and 272 bytes of non-periodic buffer space (divided into 4 non-periodic buffers per tt), for a total of 1784 bytes of buffer space for the entire transaction translator. each transaction translator?s buffer is divided as shown in ta b l e 5 . 1 , "transaction translator buffer chart" . 5.2 default serial interfa ce register memory map the serial interface registers are used to cust omize the usb3503 for specif ic applications. reserved registers or reserved bits within a defined regist er should not be written to non-default values or undefined behavior may result. table 5.1 transaction translator buffer chart periodic start-split descriptors 256 bytes periodic start-split data 752 bytes periodic complete-split descriptors 128 bytes periodic complete-split data 376 bytes non-periodic descriptors 16 bytes non-periodic data 256 bytes total for each transaction translator 1784 bytes
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 26 revision 1.1 (02-07-13) datasheet table 5.2 serial interface registers reg addr r/w register name abbreviation section 00h r/w vid lsb vidl 5.3.1, page 28 01h r/w vid msb vidm 5.3.2, page 28 02h r/w pid lsb pidl 5.3.3, page 28 03h r/w pid msb pidm 5.3.4, page 28 04h r/w did lsb didl 5.3.5, page 28 05h r/w did msb didm 5.3.6, page 29 06h r/w config data byte 1 cfg1 5.3.7, page 29 07h r/w config data byte 2 cfg2 5.3.8, page 30 08h r/w config data byte 3 cfg3 5.3.9, page 30 09h r/w non-removable devices nrd 5.3.10, page 31 0ah r/w port disable (self) pds 5.3.11, page 31 0bh r/w port disable (bus) pdb 5.3.12, page 32 0ch r/w max power (self) maxps 5.3.13, page 32 0dh r/w max power (bus) maxpb 5.3.14, page 32 0eh r/w hub controller max current (self) hcmcs 5.3.15, page 33 0fh r/w hub controller max current (bus) hcmcb 5.3.16, page 33 10h r/w power-on time pwrt 5.3.17, page 33 11h r/w lang_id_h langidh 5.3.18, page 33 12h r/w lang_id_l langidl 5.3.19, page 34 13h r/w mfr_str_len mfrsl 5.3.20, page 34 14h r/w prd_str_len prdsl 5.3.21, page 34 15h r/w ser_str_len sersl 5.3.22, page 34 16h- 53h r/w mfr_str manstr 5.3.23, page 34 54h- 91h r/w prod_str prdstr 5.3.24, page 35 92h- cfh r/w ser_str serstr 5.3.25, page 35 d0h r/w downstream battery charging bc_en 5.3.26, page 35
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 27 revision 1.1 (02-07-13) datasheet d1-e1h r/w reserved n/a e2h r/w reserved n/a e3-e4h r/w reserved n/a e5h r port power status prtpwr 5.3.27, page 36 e6h r/w over current sense control ocs 5.3.28, page 36 e7h r/w serial port inte rlock control sp_ilock 5.3.29, page 37 e8h r/w serial port inte rrupt status int_status 5.3.30, page 37 e9h r/w serial port interrupt mask int_mask 5.3.31, page 38 eah- edh r/w reserved n/a eeh r/w configure portable hub cfgp 5.3.32, page 39 efh- f3h rreserved n/a f4h r/w varisense_up3 vsnsup3 5.3.33, page 39 f5h r/w varisense_21 vsns21 5.3.34, page 40 f6h r/w boost_up3 bstup3 5.3.35, page 40 f7h r/w reserved n/a f8h r/w boost_21 bst21 5.3.36, page 41 f9h r/w reserved n/a fah r/w port swap prtsp 5.3.37, page 41 fbh r/w port remap 12 prtr12 5.3.38, page 42 fch r/w port remap 34 prtr34 5.3.39, page 43 fdh r/w reserved n/a feh r/w reserved n/a ffh r/w i2c status/command stcd 5.3.40, page 44 table 5.2 serial interface registers (continued) reg addr r/w register name abbreviation section
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 28 revision 1.1 (02-07-13) datasheet 5.3 serial interface register definitions 5.3.1 register 00h: vendor id (lsb) - vidl default = 0x24h - corresponds to smsc vendor id. 5.3.2 register 01h: vendor id (msb) - vidm default = 0x04h - corresponds to smsc vendor id. 5.3.3 register 02h: product id (lsb) - pidl default = 0x03h - corresponds to smsc usb part number for 3-port device. 5.3.4 register 03h: product id (msb) - pidm default = 0x35h corresponds to smsc 3503 device. 5.3.5 register 04h: device id (lsb) - didl default = 0xa0h bit number bit name description 7:0 vid_lsb least significant byte of the vendor id. this is a 16-bit value that uniquely identifies the vendor of the user device (assigned by usb-interface forum). this field is set by the customer us ing the serial interface options. bit number bit name description 7:0 vid_msb most significant byte of the vendo r id. this is a 16-bit value that uniquely identifies the vendor of the user device (assigned by usb-interface forum). this field is set by the customer using serial interface options. bit number bit name description 7:0 pid_lsb least significant byte of the product id. this is a 16-bit value that the vendor can assign that uniquely identifies this particular product (assigned by customer). this field is set by the customer using the serial interface options. bit number bit name description 7:0 pid_msb most significant byte of the product id. this is a 16-bit value that the vendor can assign that uniquely identifies this particular product (assigned by customer). this field is set by the customer using the serial interface options. bit number bit name description 7:0 did_lsb least significant byte of the device id. this is a 16-bit device release number in bcd format (assigned by customer). th is field is set by the customer using the serial interface options.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 29 revision 1.1 (02-07-13) datasheet 5.3.6 register 05h: devi ce id (msb) - didm default = 0xa1h 5.3.7 register 06h: config_byte_1 - cfg1 default = 0x98h - corresponds to self powered, ganged port power bit number bit name description 7:0 did_msb most significant byte of the device id. this is a 16-bit device release number in bcd format (assigned by customer). th is field is set by the customer using the serial interface options. bit number bit name description 7 self_bus_pw r self or bus power: selects betwe en self- and bus-powered operation. the hub is either self-powered or bus-powered. when configured as a bus-powered devi ce, the smsc hub consumes less than 100ma of current prior to bei ng configured. after config uration, the bus-powered smsc hub (along with all associated hub circuitry, any embedded devices if part of a compound device, and 100ma per ex ternally available downstream port) must consume no more than 500ma of upstream vbus current. the current consumption is system dependent, and the customer must ensure that the usb 2.0 specifications are not violated. when configured as a self-powered devi ce, <1ma of upstream vbus current is consumed and all ports are available, with each port being capable of sourcing 500ma of current. this field is set by the customer using the serial interface options. 0 = bus-powered operation. 1 = self-powered operation. 6 reserved reserved 5 reserved reserved 4 mtt_enable multi-tt enable: enables one transaction translator per port operation. selects between a mode where only one tr ansaction translator is available for all ports (single-tt), or each port gets a dedicated transaction translator (multi- tt) {note: the host may force single-tt mode only}. 0 = single tt for all ports. 1 = one tt per port (multiple tt?s supported) 3 reserved reserved 2:1 current_sns over current sense: selects curr ent sensing on a port-by-port basis, all ports ganged, or none (only for bus-powered hubs) the ability to support current sensing on a port or ganged basis is hardware implementation dependent. 00 = ganged sensing (all ports together). 01 = individual port-by-port. 1x = over current sensing not supported. (must only be used with bus- powered configurations!) 0 port_pwr port power switching: enables power switching on all ports simultaneously (ganged), or port power is individually switched on and off on a port- by-port basis (individual). the ability to support power enabling on a port or ganged basis is hardware im plementation dependent. 0 = ganged switching (all ports together) 1 = individual port-by-port switching.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 30 revision 1.1 (02-07-13) datasheet 5.3.8 register 07h: configuration data byte 2 - cfg2 default = 0x20h - not a compound device 5.3.9 register 08h: configuration data byte 3 - cfg3 default = 0x03h bit number bit name description 7:4 reserved reserved 3 compound compound device: allows the customer to indicate that the hub is part of a compound (see the usb specification for definition) device. the applicable port(s) must also be defined as having a ?non-removable device?. 0 = no. 1 = yes, hub is part of a compound device. 2:0 reserved reserved bit number bit name description 7:4 reserved reserved 3 prtmap_en port re-mapping enable: selects the method used by the hub to assign port numbers and disable ports ?0? = standard mode. the following registers are used to define which ports are enabled, and the ports are mapped as port ?n? on the hub is reported as port ?n? to the host, unless one of the ports is disabled, then the higher numbered ports are remapped in order to report contiguous port numbers to the host. section 5.3.11 register 0a section 5.3.12 register 0b ?1? = port re-map mode. the mode enables remapping via the registers defined below. section 5.3.38 register fb section 5.3.39 register fc 2:1 reserved reserved 0 string_en enables string descriptor support ?0? = string support disabled ?1? = string support enabled
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 31 revision 1.1 (02-07-13) datasheet 5.3.10 register 09h: non-removable device - nrd default = 0x00h 5.3.11 register 0ah: port disable for self powered operation - pds default = 0x00h bit number bit name description 7:0 nr_device non-removable device: indicates wh ich port(s) include non- removable devices. ?0? = port is removable ?1? = port is non- removable. informs the host if one of the active physical ports has a permanent device that is undetachable from the hub. (note: the device must provide its own descriptor data.) bit 7= reserved bit 6= reserved bit 5= reserved bit 4= reserved bit 3= port 3 non-removable. bit 2= port 2 non-removable. bit 1= port 1 non removable. bit 0= reserved bit number bit name description 7:0 port_dis_sp port disable, self-p owered: disables 1 or more ports. ?0? = port is available ?1? = port is disabled. during self-powered operation and prtmap_en = ?0?, this selects the ports which will be permanently disabled, and are not available to be enabled or enumerated by a host controller. the ports can be disabled in any order, the internal logic will automatically report t he correct number of enabled ports to the usb host, and will reorder the active port s in order to ensure proper function. bit 7= reserved bit 6= reserved bit 5= reserved bit 4= reserved bit 3= port 3 disable. bit 2= port 2 disable. bit 1= port 1 disable. bit 0= reserved
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 32 revision 1.1 (02-07-13) datasheet 5.3.12 register 0bh: port disabl e for bus powered operation - pdb default = 0x00h 5.3.13 register 0ch: max power fo r self powered operation - maxps default = 0x01h 5.3.14 register 0dh: max power fo r bus powered operation - maxpb default = 0xfah- corresponds to 500ma. bit number bit name description 7:0 port_dis_bp port disable, bus-powered: disables 1 or more ports. ?0? = port is available ?1? = port is disabled. during bus-powered operation and prtmap_en = ?0?, this selects the ports which will be permanently disabled, and are not available to be enabled or enumerated by a host controller. the ports can be disabled in any order, the internal logic will automatically report t he correct number of enabled ports to the usb host, and will reorder the active ports in order to ensure proper function. bit 7= reserved bit 6= reserved bit 5= reserved bit 4= reserved bit 3= port 3 disable. bit 2= port 2 disable. bit 1= port 1 disable. bit 0= reserved bit number bit name description 7:0 max_pwr_sp max power self_powered: value in 2ma increments that the hub consumes from an upstream port when operating as a self-powered hub. this value includes the hub silicon along with th e combined power consumption (from vbus) of all associated circuitry on the board. this value also includes the power consumption of a permanently attach ed peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0ma in its descriptors. example: a value of 8ma would be written to this register as 0x04h note: the usb 2.0 specification does not permit this value to exceed 100ma bit number bit name description 7:0 max_pwr_bp max power bus_powered: value in 2ma increments that the hub consumes from an upstream port when operati ng as a bus-powered hub. this value includes the hub silicon along with th e combined power consumption (from vbus) of all associated circuitry on the board. this value also includes the power consumption of a permanently attach ed peripheral if the hub is configured as a compound device, and the embedded peripheral reports 0ma in its descriptors. example: a value of 8ma would be written to this register as 0x04h
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 33 revision 1.1 (02-07-13) datasheet 5.3.15 register 0eh: hub controller max current fo r self powered operation - hcmcs default = 0x02h corresponds to 2ma. 5.3.16 register 0fh: hub controller max current fo r bus powered operation - hcmcb default = 0x64h- corresponds to 100ma. 5.3.17 register 10h: po wer-on time - pwrt default = 0x00h - corresponds to 0ms. required for a hub with no power switches note: this register represents time from when a host sends a setportfeature(port_power) request to the time power is supplied through an external switch to a downstream port. it should be set to 0 if no power switch is used- for instance within a compound device. 5.3.18 register 11h: lan guage id high - langidh default = 0x04h - corresponds to us english code 0x0409h bit number bit name description 7:0 hc_max_c_sp hub controller max current self-p owered: value in 1ma increments that the hub consumes from an upstream port when operating as a self- powered hub. this value includes the hub silicon along wit h the combined power consumption (from vbus) of all associated circuitry on the board. this value does not include the power consumption of a permanently attach ed peripheral if the hub is configured as a compound device. example: a value of 8ma would be written to this register as 0x08h note: the usb 2.0 specification does not permit this value to exceed 100ma bit number bit name description 7:0 hc_max_c_bp hub controller max current bus-po wered: value in 1ma increments that the hub consumes from an upstream port when operating as a bus- powered hub. example: a value of 8ma would be written to this register as 0x08h bit number bit name description 7:0 power_on_ti me power on time: the length of time that is takes (in 2 ms intervals) from the time the host initiated power-on sequence begins on a port until power is good on that port. system software uses this value to determine how long to wait before accessing a powered-on port. setting affects only the hub descriptor field ?pwron2pwrgood? see section 7.4, "class-specific hub descriptor," on page 56 . bit number bit name description 7:0 lang_id_h usb language id (upper 8 bits of a 16 bit id field)
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 34 revision 1.1 (02-07-13) datasheet 5.3.19 register 12h: lan guage id low - langidl default = 0x09h - corresponds to us english code 0x0409h 5.3.20 register 13h: manufacturer string length - mfrsl default = 0x00h 5.3.21 register 14h: product string length - prdsl default = 0x00h 5.3.22 register 15h: seri al string length - sersl default = 0x00h 5.3.23 register 16h-53h: ma nufacturer string - manstr default = 0x00h bit number bit name description 7:0 lang_id_l usb language id (lower 8 bits of a 16 bit id field) bit number bit name description 7:0 mfr_str_len manufacturer string length bit number bit name description 7:0 prd_str_len product string length bit number bit name description 7:0 ser_str_len serial string length bit number bit name description 7:0 mfr_str manufacturer stri ng, unicode utf-16le per usb 2.0 specification note: the string consists of individual 16 bit unicode utf-16le characters. the characters will be stored star ting with the lsb at the least significant address and the msb at the next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same lsb, msb manner). please pay careful attention to the byte ordering or your selected programming tools.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 35 revision 1.1 (02-07-13) datasheet 5.3.24 register 54h-91h: product string - prdstr default = 0x00h 5.3.25 register 92h-cfh: serial string - serstr default = 0x00h 5.3.26 register d0: downstream battery charging enable - bc_en default = 0x00h bit number bit name description 7:0 prd_str product string, unicode ut f-16le per usb 2.0 specification note: the string consists of individual 16 bit unicode utf-16le characters. the characters will be stored star ting with the lsb at the least significant address and the msb at th e next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same lsb, msb manner). please pa y careful attention to the byte ordering or your selected programming tools. bit number bit name description 7:0 ser_str serial string, unicode utf-16le per usb 2.0 specification note: the string consists of individual 16 bit unicode utf-16le characters. the characters will be stored star ting with the lsb at the least significant address and the msb at the next 8-bit location (subsequent characters must be stored in sequential contiguous address in the same lsb, msb manner). please pay careful attention to the byte ordering or your selected programming tools. bit number bit name description 7:0 bc_en battery charging enable: enables the battery charging feature for the corresponding downstream port. ?0? = downstream battery charging support is not enabled. ?1? = downstream battery charging support is enabled bit 7= reserved bit 6= reserved bit 5= reserved bit 4= reserved bit 3= port 3 battery charging enable. bit 2= port 2 battery charging enable. bit 1= port 1 battery charging enable. bit 0= reserved
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 36 revision 1.1 (02-07-13) datasheet 5.3.27 register e5h: port power status - prtpwr default = 0x00h 5.3.28 register e6h: over current sense control - ocs default = 0x00h bit number bit name description 7:4 reserved reserved. 3:1 prtpwr[3:1] read only. optional status to soc indicating t hat power to the downstream port was enabled by the usb host for the specified port. not required for an embedded application. this is a read-only status bit. actual c ontrol over port power is implemented by the usb host, ocs register and downstream battery charging logic if enabled. see section 8.1.2, "special behavior of prtpwr register," on page 61 for more information. 0 = usb host has not enabled port to be powered or in downstream battery charging and corresponding ocs bit has been set. 1 = usb host has enabled port to be powered 0 reserved reserved. bit number bit name description 7:4 reserved reserved. {note: software must never write a ?1? to these bits} 3 ocs[3] when sp_ilock.ocspinsel = 1 register bit is reserved. setting bit has no effect on hub operation, instead ocs_n device pin controls over current condition reporting. when sp_ilock.ocspinsel = 0 optional control from soc on indicating external current monitor indicating an over-current condition on port 3 for hub status reporting to usb host. also resets corresponding prtpwr status register bit. not required for an embedded application. 0 = no over current condition 1 = over current condition 2:1 ocs[2:1] optional control from soc on indicating external current monitor indicating an over-current condition on the specified port for hub status reporting to usb host. also resets corresponding prtpwr status register bit. not required for an embedded application. 0 = no over current condition 1 = over current condition 0 reserved reserved.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 37 revision 1.1 (02-07-13) datasheet 5.3.29 register e7h: serial po rt interlock control - sp_ilock default=0x32h - corresponds to ocs_n/prt_pwr pi ns & pausing to connect until write from i2c 5.3.30 register e8h: serial port interrupt status - int_status default = 0x00h bit number bit name description 7:6 reserved reserved 5 ocspinsel 1= ocs device pin will assume role as an active low over current sense input 0= ocs device pin disabled, register control established 4 prtpwrpinsel 1=prtpwr device pin will assume role as an active high port power switch control output 0=prtpwr device pin disabled, register control established 3:2 reserved reserved 1 connect_n the soc can utilize this bit to control when the hub attempts to connect to the upstream host. 1 = device will remain in hub mode.connect stage indefinitely until bit is cleared by the soc. 0 = device will transition to the hub mode.communication stage after this bit is asserted low by default or through a serial port write. 0 config_n if the soc intends to update the default configuration using the serial port, this register should be the first register updated by the soc. in this way the timing dependency between configuration and devi ce operation can be minimized- the soc is only required to write to serial port interlock register within t hubconfig and not all the registers it is attempting to configure. once all registers have been written for th e desired configuration, the soc must clear this bit to ?0? for the device to resume normal operation using the new configuration. it may be desirable for the device to in itiate autonomous oper ation with no soc intervention at all. this is why the default setting is to allow the device to initiate automatic operation if th e soc does not intervene by writing the interlock register within the allo tted configuration timeout. 1 = device will remain in hub mode.configuration stage indefinitely, and allow soc to write through the serial port to set any desired configuration. 0 = device will transition out of hub.conf iguration stage immediately after this bit is asserted low through a serial port wr ite. (a default low assertion results in transition after a timeout.) bit number bit name description 7 interrupt read: 1 = int_n pin has been asserted low due to unmasked interrupt 0 = int_n pin has not been asserted low due to unmasked interrupt write: 1 = no effect ? int_n pin and register retains its current value 0 = negate int_n pin high 6:5 reserved reserved
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 38 revision 1.1 (02-07-13) datasheet 5.3.31 register e9h: serial port interrupt mask - int_mask default = 0x00h 4 hubsuspint read: 1 = hub has entered usb suspend 0 = hub has not entered usb suspend since last hubsuspint reset write: 1 = no effect 0 = negate hubsuspint status low 3 hubcfgint read: 1 = hub has been configured by usb host 0 = hub has not been configured by usb host since last hubconfint reset write: 1 = no effect 0 = negate hubconfint status low 2 prtpwrint read: 1 = port power register has been updated 0 = port power register has not been updated since last prtpwrint reset write: 1 = no effect 0 = negate prtpwrint status low 1:0 reserved reserved bit number bit name description 7:5 reserved reserved 4 hubsuspmask 1 = int_n pin is asserted low when hub enters suspend 0 = int_n pin is not affected by hub entering suspend 3 hubcfgmask 1 = int_n pin is asserted low when hub configured by usb host 0 = int_n pin is not affected by hub configuration event 2 prtpwrmask 1 = int_n pin is asserted low wh en port power register has been updated by usb host 0 = int_n pin is not affected by port power register 1:0 reserved reserved bit number bit name description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 39 revision 1.1 (02-07-13) datasheet 5.3.32 register eeh: conf igure portable hub - cfgp default = 0x00h - corresponds to 95 ms startup & phone refclks available 5.3.33 register f4h: varisense_up3 - vsnsup3 default = 0x00h bit number bit name description 7 clksusp (read/write) 1 = force device to run internal clo ck even during usb suspend (will cause device to violate usb suspend current limit - intended for test or self-powered applications which require use of serial port during usb session.) 0 = allow device to gate off its internal clocks during suspend mode in order to meet usb suspend current requirements. 6 intsusp (read/write) 1 = int_n pin function is a level sensitive usb suspend interrupt indication. allows system to adjust current consumpt ion to comply with usb specification limits when hub is in the usb suspend state. 0 = int_n pin function retains event sensitive role of a general serial port interrupt. see section 3.3.4, "int errupt," on page 18 for more information. 5:4 cfgtout (read only) specifies timeout value for allowing soc to configure the device. corresponds to the t hubconfig parameter. see section table 4.2, "timin g parameters for hub stages" . ?00? = 95ms - use to meet legacy 100ms connect timing 3 reserved reserved 2:0 reserved reserved bit number bit name description 7:3 reserved reserved 2:0 dn3_squelch these two bits control the squelch setting of the downstream port 3. ?000? = nominal value ?001? = 90% of nominal value ?010? = 80% of nominal value ?011? = 70% of nominal value ?100? = 60% of nominal value ?101? = 50% of nominal value ?110? = 120% of nominal value ?111? = 110% of nominal value
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 40 revision 1.1 (02-07-13) datasheet 5.3.34 register f5h: varisense_21 - vsns21 default = 0x00h 5.3.35 register f6h: boost_up3 - bstup3 default = 0x30h bit number bit name description 7 reserved reserved 6:4 dn2_squelch these two bits control the squelch setting of the downstream port 2. ?000? = nominal value ?001? = 90% of nominal value ?010? = 80% of nominal value ?011? = 70% of nominal value ?100? = 60% of nominal value ?101? = 50% of nominal value ?110? = 120% of nominal value ?111? = 110% of nominal value 3 reserved reserved 2:0 dn1_squelch these three bits control the squelch setting of the downstream port 1. ?000? = nominal value ?001? = 90% of nominal value ?010? = 80% of nominal value ?011? = 70% of nominal value ?100? = 60% of nominal value ?101? = 50% of nominal value ?110? = 120% of nominal value ?111? = 110% of nominal value bit number bit name description 7:3 reserved reserved 2:0 boost_iout_3 usb electrical signaling drive st rength boost bit for downstream port ?3?. boosts usb high speed current. 3?b000: nominal 3?b001: -5% 3?b010: +10% 3?b011: +5% 3?b100: +20% 3?b101: +15% 3?b110: +30% 3?b111: +25%
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 41 revision 1.1 (02-07-13) datasheet 5.3.36 register f8h: boost_21 - bst21 default = 0x00h 5.3.37 register fah: port swap - prtsp default = 0x00h bit number bit name description 7 reserved reserved 6:4 boost_iout_2 usb electrical signaling drive st rength boost bit for downstream port ?2?. boosts usb high speed current. 3?b000: nominal 3?b001: -5% 3?b010: +10% 3?b011: +5% 3?b100: +20% 3?b101: +15% 3?b110: +30% 3?b111: +25% 3 reserved reserved 2:0 boost_iout_1 usb electrical signaling drive st rength boost bit for downstream port ?1?. boosts usb high speed current. 3?b000: nominal 3?b001: -5% 3?b010: +10% 3?b011: +5% 3?b100: +20% 3?b101: +15% 3?b110: +30% 3?b111: +25% bit number bit name description 7:0 prtsp port swap: swaps the upstream hsic and downstream usb dp and dm pins for ease of board routing to devices and connectors. ?0? = usb d+ functionality is associat ed with the dp pin and d- functionality is associated with the dm pin. ?1? = usb d+ functionality is associated wi th the dm pin and d- functionality is associated with the dp pin. bit 7= reserved bit 6= reserved bit 5= reserved bit 4= reserved bit 3= port 3 dp/dm swap. bit 2= port 2 dp/dm swap. bit 1= port 1 dp/dm swap. bit 0= reserved
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 42 revision 1.1 (02-07-13) datasheet 5.3.38 register fbh: port remap 12 - prtr12 default = 0x21h - physical port is mapped to the corresponding logical port. bit number bit name description 7:0 prtr12 port remap register for ports 1 & 2. when a hub is enumerated by a usb host controller, the hub is only permitted to report how many ports it has, the hub is not permitted to select a numerical range or assignment. the host controller will number the downstream ports of the hub starting with the number ?1?, up to the number of ports that the hub reported having. the host?s port number is referred to as ?logical port number? and the physical port on the hub is the physical port number?. when remapping mode is enabled (see prtmap_en in section 5.3.9 ) the hub?s downstream port numbers can be remapped to different logical port numbers (assigned by the host.) note: the customer must ensure that contiguous logical port numbers are used, starting from #1 up to the maximu m number of enabled ports, this ensures that the hub?s ports are numbered in accordance with the way a host will communicate with the ports. bit [7:4] = ?0000? physical port 2 is disabled ?0001? physical port 2 is mapped to logical port 1 ?0010? physical port 2 is mapped to logical port 2 ?0011? physical port 2 is mapped to logical port 3 ?0100? reserved, will default to ?0000? value ?0101? to ?1111? reserved, will default to ?0000? value bit [3:0] = ?0000? physical port 1 is disabled ?0001? physical port 1 is mapped to logical port 1 ?0010? physical port 1 is mapped to logical port 2 ?0011? physical port 1 is mapped to logical port 3 ?0100? reserved, will default to ?0000? value ?0101? to ?1111? reserved, will default to ?0000? value
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 43 revision 1.1 (02-07-13) datasheet 5.3.39 register fch: port remap 34 - prtr34 default = 0x03h - physical port is mapped to corresponding logical port. bit number bit name description 7:0 prtr34 port remap register for ports 3. when a hub is enumerated by a usb host controller, the hub is only permitted to report how many ports it has, the hub is not permitted to select a numerical range or assignment. the host controller will number the downstream ports of the hub starting with the number ?1?, up to the number of ports that the hub reported having. the host?s port number is referred to as ?logical port number? and the physical port on the hub is the physical port number?. when remapping mode is enabled (see prtmap_en in section 5.3.9 ) the hub?s downstream port numbers can be remapped to different logical port numbers (assigned by the host). note: the customer must ensure that contiguous logical port numbers are used, starting from #1 up to the maximu m number of enabled ports, this ensures that the hub?s ports are numbered in accordance with the way a host will communicate with the ports. bit [7:4] = ?0000? reserved ? software must not write ?1? to any of these bits. ?0001? to ?1111? reserved, will default to ?0000? value bit [3:0] = ?0000? physical port 3 is disabled ?0001? physical port 3 is mapped to logical port 1 ?0010? physical port 3 is mapped to logical port 2 ?0011? physical port 3 is mapped to logical port 3 ?0100? reserved, will default to ?0000? value physical port 3 is mapped to logical port 4 ?0101? to ?1111? reserved, will default to ?0000? value
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 44 revision 1.1 (02-07-13) datasheet 5.3.40 register ffh: status/command - stcd default = 0x00h bit number bit name description 7:2 reserved reserved {note: software must never write a ?1? to these bits} 1 reset reset the serial interf ace and internal memory r egisters in address range 00h-e1h and efh-ffh back to reset_n assertion default settings. {note: during this reset, this bit is automatically cleared to its default value of 0.} 0 = normal run/idle state. 1 = force a reset of the regi sters to their default state. 0 config_protect protect the configuration 0 = serial slave interface is active. 1 = the internal configuration memory (address range 00h-e1h and efh- ffh) is ?write-protected? to prevent unintentional data corruption. {note 1: this bit is write once and is only cleared by assertion of the external reset_n pin.}
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 45 revision 1.1 (02-07-13) datasheet chapter 6 serial slave interface 6.1 overview the serial slave interface on usb3503 is implemented as i 2 c. it is a standard i 2 c slave interface that operates at the standard (100kbps), fast (400kbp s), and the fast mode plus (1mbps) modes. the usb3503 i 2 c slave interface address is 0x08h. refclk must be running for i 2 c to operate. the register map is outlined in section section 5.3 . the i 2 c slave base address is 0x08. the interrupt pi n int_n is used to communicate status changes on selected events that are mapped into the serial port interrupt status register. int_n is asserted low whenever an unmasked bit is set in the serial port interrupt status register. soc must update the serial port interrupt status regi ster to negate the interrupt high. the soc can mask events to not cause the interr upt pin to transition by updating the serial port interrupt mask register. the status events will still be captured in the status register even if the interrupt pin is not asserted. the serial port has li mited speed and latency capability so events mapped into the serial ports and its interrupt are not expected to be latency critical. 6.2 interconnecting the usb3503 to an i 2 c master note 6.1 the largest pullup values which meet the cu stomer application should be selected in order to minimize power consumption. pullup values must also have low enough resistance to support the desired i 2 c operating speed with the expected total capacitance in the figure 6.1 i 2 c connections i 2 c master controller usb3503 scl sda soc scl sda vdd int int
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 46 revision 1.1 (02-07-13) datasheet application. typical applications are ex pected to use pullup values between 220 ? and 2.7k ? for operation at 1mhz on scl and sda. la rger pullup resistors may be acceptable for operation at 400khz or 100khz. 6.3 i 2 c message format 6.3.1 sequential access writes the i 2 c interface will support sequential writing of t he register address space of the usb3503. this mode is useful for configuring contiguous blocks of registers. please see sect ion on soc interface for address definitions. figure 6.2 shows the format of the sequential write operation. where color is visible in the figure, blue indicates signaling from the i 2 c master, and gray indicates signaling from the usb3503 slave: in this operation, following the 7-bit slave address, an 8-bit register address is written indicating the start address for sequential write oper ation. every data access after that is a data write to a data register where the register address increments afte r each access and ack from the slave must occur. sequential write access is te rminated by a stop condition. 6.3.2 sequential access reads the i 2 c interface will support direct reading of the u sb3503 registers. in order to read one or more register addresses, the starting address must be set by using a wr ite sequence followed by a read. the read register interface supports auto-increme nt mode. the master should send a nack instead of an ack when the last byte has been transferred. in this operation, following the 7-bit slave address, 8-bit register address is written indicating the start address for sequential read operation to be followed. in the read sequence, every data access is a data read from a data register where the regist er address increments after each access. write sequence can end with optional stop (p). if so the re ad sequence must start with a start (s) otherwise it must start with repeated start (sr). figure 6.2 i 2 c sequential access write format s 7-bit slave address 0 p a nnnnnnnn data value for xxxxxx ... nnnnnnnn a data value for xxxxxx + y a xxxxxxxx a register address (bits 7-0)
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 47 revision 1.1 (02-07-13) datasheet figure 6.3 shows the format of the read operation. wher e color is visible in the figure, blue and gold indicate signaling from the i 2 c master, and gray indicates signaling from the usb3503 slave. 6.3.3 i 2 c timing below is the timing diagram and timing specifications for the different i2c modes that the usb3503 supports. figure 6.3 sequential access read format figure 6.4 i 2 c timing diagram table 6.1 i 2 c timing specifications symbol parameter standard-mode fast-mode fast-mode plus unit min max min max min max f scl scl clock frequency 0 100 0 400 0 1000 khz t hd;sta hold time start condition 4 0.6 0.26 s s 7-b it s lave a ddress 0 p a xxxxxxxx a register a ddress (bits 7-0) o ptional. if present, n ext access m ust have s tart(s ), otherw ise r epeat s tart (s r) s 7-bit slave address 1 n n n n n n n n p ack ack register value for xxxxxxxx n n n n n n n n ack register value for xxxxxxxx + 1 ... n n n n n n n n nack if previous write setting up register address ended with a s to p (p ), o th e rw is e it w ill b e repeated start (sr) register value for xxxxxxxx + y t hd;sta t su;sto t su;sta t su;dat t high t f t r t low t hd;dat t hd;sta t buf ab_data ab_clk i 2 c_clk i 2 c_data
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 48 revision 1.1 (02-07-13) datasheet t low low period of the scl clock 4.7 1.3 0.5 s t high high period of the scl clock 4 0.6 0.26 s t su;sta set-up time for a repeated start condition 4.7 0.6 0.26 s t hd;dat data hold time 0 0 0 ns t su;dat data set-up time 250 100 50 ns t r rise time of both sda and scl signals 1000 300 120 ns t f fall time of both scl and sda lines 300 300 120 ns t su;sto set-up time for a stop condition 4 0.6 0.26 s t buf bus free time between a stop and start condition 4.7 1.3 0.5 s table 6.1 i 2 c timing specifications (continued) symbol parameter standard-mode fast-mode fast-mode plus unit min max min max min max
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 49 revision 1.1 (02-07-13) datasheet chapter 7 usb descriptors a customer can indirectly affect which descripto rs are reported via one of two methods. the two methods are: internal default ro m configuration, or direct load through the serial port interface. the smsc hub will not electrically attach to the usb until after it has loaded valid data for all user- defined descriptor fields (either through in ternal default rom, or serial port). 7.1 usb bus reset in response to the upstream port signaling a reset to the hub, the hub does the following: note 7.1 the hub does not propagate the upstream usb reset to downstream devices. ? sets default address to 0. ? sets configuration to: unconfigured. ? negates prtpwr[3:1] register for all downstream ports. ? clears all tt buffers. ? moves device from suspended to active (if suspended). ? complies with section 11.10 of the usb 2.0 sp ecification for behavior after completion of the reset sequence. the host then configures the hub and the hub's downstream port devic es in accordance with the usb specification. 7.2 hub attached as a high-sp eed device (customer-configured for single-tt support only) the following tables provide descriptor inform ation for customer-confi gured single-tt-only hubs attached for use with high-speed devices. 7.2.1 standard device descriptor the following table provides device descriptor values for high-speed operation. table 7.1 device descriptor offset field size value description 0 length 1 12h size of this descriptor. 1 descriptortype 1 01h devi ce descriptor type. 2 usb 2 0200h usb specification release number. 4 deviceclass 1 09h class code assigned by usb-if for hubs. 5 devicesubclass 1 00h class code assigned by usb-if for hubs. 6 deviceprotocol 1 01h protocol code. 7 maxpacketsize0 1 40h 64-byte packet size. 8 vendor 2 user/ default vendor id; customer value defined in rom or serial port load.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 50 revision 1.1 (02-07-13) datasheet 7.2.2 configuration descriptor the following table provides configuration descripto r values for high-speed, single-tt-only operation. 10 product 2 user/ default product id; customer value defined in rom or serial port load. 12 device 2 user/ default device id; customer value defined in rom or serial port load 14 manufacturer 1 xxh if string_en =0 opti onal string is not supported, and xx = 00. if string_en = 1, string support is enabled, and xx = 01 15 product 1 yyh if string_en =0 optional string is not supported, and yy = 00. if string_en = 1, string support is enabled, and yy = 02 16 serialnumber 1 zzh if string_en =0 optional string is not supported, and zz = 00. if string_en = 1, string support is enabled, and zz = 03 17 numconfigurations 1 01h supports 1 configuration. table 7.2 configuration descriptor (high-speed, single-tt only) offset field size value description 0 length 1 09h size of this descriptor. 1 descriptortype 1 02h configuration descriptor type. 2 totallength 2 yyyyh total co mbined length of all descriptors for this configuration (configuration, interface, endpoint, and class- or vendor-specific). yyyyh = 0019h 4 numinterfaces 1 01h number of interfac es supported by this configuration. 5 configurationvalue 1 01h value to use as an argument to the setconfiguration() request to select this configuration. 6 configuration 1 00h index of string descr iptor describing this configuration (string not supported). table 7.1 device descriptor (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 51 revision 1.1 (02-07-13) datasheet 7.2.3 interface descriptor (single-tt) the following table provides interface descripto r values for high-speed, single-tt operation. 7 attributes 1 user/ signal configuration characteristics: communicates the capabilities of the hub regarding remote wake-up capability, and also reports the self-power status. in all cases, the value reported to the host always indicates that the hub supports remote wakeup. the value reported to the host is dependant upon the self_bus_pwr bit (config_byte_1) = a0h for bus-powered (self_bus_pwr = 0). = e0h for self-powered (self_bus_pwr = 1). all other values are reserved. 8 maxpower 1 user maximum power consumption of the hub from vbus when fully operational. this value includes all support circuitry associated with the hub (including an attached ?embedded? peripheral if hub is part of a compound device), and is in 2ma increments. the hub supports self-powered and bus-powered operation. the self_bus_pwr bit (config_byte_1) is used to determine which of the values below are reported. the value reported to the host must coincide with the current operating mode, and will be determined by the following rules. the value that is reported to the host will be: ?max_pwr_bp? if self_bus_pwr = ?0? ?max_pwr_sp? if self_bus_pwr = ?1? in all cases the reported value is sourced from the max power data field (for self or bus power) that was loaded by internal default, or serial port configuration. table 7.3 interface descriptor (high-speed, single-tt) offset field size value description 0 length 1 09h size of this descriptor. 1 descriptortype 1 04h interface descriptor type. 2 interfacenumber 1 00h number of this interface. 3 alternatesetting 1 00h value used to se lect this alternate setting for the interface. 4 numendpoints 1 01h number of endpoints used by this interface (not including endpoint 0). 5 interfaceclass 1 09h hub class code. 6 interfacesubclass 1 00h subclass code. table 7.2 configuration descriptor (high-speed, single-tt only) (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 52 revision 1.1 (02-07-13) datasheet 7.2.4 endpoint descriptor (single-tt) the following table provides endpoint descriptor values for single-tt operation. 7.3 hub attached as a high-sp eed device (customer-configured as multi-tt capable) the following tables provide descriptor inform ation for customer-conf igured multi-tt high-speed devices. 7.3.1 standard device descriptor the following table provides device descriptor values for high-speed operation. 7 interfaceprotocol 1 00h single-tt. 8 interface 1 00h index of the string descriptor describing this interface (strings not supported). table 7.4 endpoint descriptor (for status change endpoint, single-tt) offset field size v alue description 0 length 1 07h size of this descriptor. 1 descriptortype 1 05h endpoint descriptor type. 2 endpointaddress 1 81h the address of the endpoint on the usb device. 3 attributes 1 03h describes the endpoint?s attributes. (interrupt only, no synchronization, data endpoint). 4 maxpacketsize 2 0001h maximum packet size for this endpoint. 6 interval 1 0ch interval for polling endpoint for data transfers (maximum possible). table 7.5 device descriptor (high-speed) offset field size value description 0 length 1 12 size of this descriptor 1 descriptortype 1 01h device descriptor type. 2 usb 2 0200h usb specification release number. 4 deviceclass 1 09h class code assigned by usb-if for hubs. 5 devicesubclass 1 00h class code assigned by usb-if for hubs. 6 deviceprotocol 1 02h proto col code (multi-tts). table 7.3 interface descriptor (high-speed, single-tt) (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 53 revision 1.1 (02-07-13) datasheet 7.3.2 configuration descriptor the following table provides configuration descriptor values for high-speed operation. 7 maxpacketsize0 1 40h 64-byte packet size. 8 vendor 2 user vendor id; customer value defined in rom or serial port load. 10 product 2 user product id; customer value defined in rom or serial port load. 12 device 2 user device id; customer value defined in rom or serial port load. 14 manufacturer 1 xxh if string_en =0 opti onal string is not supported, and xx = 00. if string_en = 1, string support is enabled, and xx = 01 15 product 1 yyh if string_en =0 optiona l string is not supported, and yy = 00. if string_en = 1, string support is enabled, and yy = 02 16 serialnumber 1 zzh if string_en =0 optional string is not supported, and zz = 00. if string_en = 1, string support is enabled, and zz = 03 17 numconfigurations 1 01h supports 1 configuration. table 7.6 configuration descriptor (high-speed) offset field size v alue description 0 length 1 09h size of this descriptor. 1 descriptortype 1 02h configuration descriptor type. 2 totallength 2 yyyyh total combined length of all descriptors for this configuration (configuration, interface, endpoint, and class- or vendor-specific). yyyyh = 0029h. 4 numinterfaces 1 01h number of interfac e supported by this configuration. 5 configurationvalue 1 01h value to use as an argument to the setconfiguration() request to select this configuration. 6 configuration 1 00h index of string descr iptor describing this configuration (string not supported). table 7.5 device descriptor (high-speed) (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 54 revision 1.1 (02-07-13) datasheet 7.3.3 interface descriptor (single-tt) the following table provides interface descriptor values for high-speed single-tt operation. 7 attributes 1 user/ signal configuration characteristics: communicates the capabilities of the hub regarding remote wake-up capability, and also reports the self-power status. in all cases, the value reported to the host al ways indicates that the hub supports remote wakeup. the value reported to the host is dependant upon the self_bus_pwr bit (config_byte_1) = a0h for bus-powered (self_bus_pwr = 0). = e0h for self-powered (self_bus_pwr = 1). all other values are reserved. 8 maxpower 1 user maximum power consumption of the hub from vbus when fully operational. this value includes all support circuitry associated with the hub (including an attached ?embedded? peripheral if hub is part of a compound device), and is in 2ma increments. the hub supports self-powered and bus-powered operation. the self_bus_pwr bit (config_ byte_1) is used to determine which of the values below are reported. the value reported to the host must coincide with the current operating mode, and will be determined by the following rules. the value that is report ed to the host will be: ?max_pwr_bp? if self_bus_pwr = ?0? ?max_pwr_sp? if self_bus_pwr = ?1? in all cases the reported valu e is sourced from the max power data field (for self or bus power) that was loaded by internal default, or serial port configuration. table 7.7 interface descriptor (high-speed, single-tt) offset field size value description 0 length 1 09h size of this descriptor. 1 descriptortype 1 04h inter face descriptor type. 2 interfacenumber 1 00h number of this interface. 3 alternatesetting 1 00h value used to select this alternate setting for the interface. 4 numendpoints 1 01h number of endpoi nts used by this interface (not including endpoint 0). 5 interfaceclass 1 09h hub class code. 6 interfacesubclass 1 00h subclass code table 7.6 configuration descriptor (high-speed) (continued) offset field size v alue description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 55 revision 1.1 (02-07-13) datasheet 7.3.4 endpoint descriptor (single-tt) the following table provides endpoint descriptor values for single-tt operation. 7.3.5 interface descriptor (multi-tt) the following table provides interface descrip tor values for high-speed multi-tt operation. 7 interfaceprotocol 1 01h single-tt. 8 interface 1 00h index of the string descriptor describing this interface (strings not supported). table 7.8 endpoint descriptor (for status change endpoint, single-tt) offset field size value description 0 length 1 07h size of this descriptor. 1 descriptortype 1 05h endpoint descriptor type. 2 endpointaddress 1 81h the address of the endpoint on the usb device. 3 attributes 1 03h describes the endpoint?s attributes. (interrupt only, no synchronization, data endpoint). 4 maxpacketsize 2 0001h maximum packet size for this endpoint. 6 interval 1 0ch interval for polling endpoint for data transfers (maximum possible). table 7.9 interface descriptor (multi-tt, high-speed) offset field size value description 0 length 1 09h size of this descriptor. 1 descriptortype 1 04h inter face descriptor type. 2 interfacenumber 1 00h number of this interface. 3 alternatesetting 1 01h value used to se lect this alternate setting for the interface. 4 numendpoints 1 01h number of endpoints used by this interface (not including endpoint 0). 5 interfaceclass 1 09h hub class code. 6 interfacesubclass 1 00h subclass code. 7 interfaceprotocol 1 02h multiple-tts. 8 interface 1 00h index of the string descriptor describing this interface (strings not supported). table 7.7 interface descriptor (high-speed, single-tt) (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 56 revision 1.1 (02-07-13) datasheet 7.3.6 endpoint descriptor (multi-tt) the following table provides endpoint descriptor values for multi-tt operation. 7.4 class-specific hub descriptor the following table provides class-specific hub descriptor values. note: the hub must respond to hub class d escriptor type 29h (the usb 1.1 and usb 2.0 value) and 00h (the usb 1.0 value). table 7.10 endpoint descriptor (for status change endpoint, multi-tt) offset field size value description 0 length 1 07h size of this descriptor. 1 descriptortype 1 05h endpoint descriptor type. 2 endpointaddress 1 81h the address of the endpoint on the usb device. 3 attributes 1 03h describes the endpoint?s attributes. (interrupt only, no synchronization, data endpoint). 4 maxpacketsize 2 0001h maximum packet size for this endpoint. 6 interval 1 0ch interval for polling endpoint for data transfers (maximum possible). table 7.11 class-specific hub descriptor offset field size value description 0 length 1 09h size of this descriptor. 1 descriptortype 1 29h hub descriptor type.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 57 revision 1.1 (02-07-13) datasheet 2 nbrports 1 user number of downstream facing ports this hub supports. see section 11.23.2.1 of the usb specification for additional details regarding the use of this field. the value reported is implementation dependent, and is derived from the value defined during internal default, or serial port load. the port_dis_sp field defines the ports that are permanently disabled when in self- powered operation, and the port_dis_bp field defines the ports that are pe rmanently disabled when in bus-powered operation. internal logic will subtract the number of ports which are disabled, from the total number available (which is 3), and will report the remainder as the number of ports supported. the value reported to the host must coincide with the current operating mode, and will be determined by the following rules. the field used to determine the value that is reported to the host will be: ?port_dis_bp? if self_bus_pwr = ?0? ?port_dis_sp? if self_bus_pwr = ?1? 3 hubcharacteristics 2 user defines support for logical power switching mode, compound device support, ov er-current protection, tt think time, and port indicator support, see section 11.23.2.1 in the usb specific ation for additional details regarding the use of this field. the values delivered to a host are all derived from values defined during internal default, or serial port load, and are assigned as follows: d1:0 = ?00?b if port_pwr = ?0? d1:0 = ?01?b if port_pwr = ?1? d2 = ?compound? d4:3 = ?current_sns? d6:5 = ?00?b for 8fs (max) bi t times of tt think time. d7 = hardcoded to ?0? (no port indicator support) d15:8 = ?00000000?b 5 pwron2pwrgood 1 user time (in 2 ms inte rvals) from the time the power-on sequence begins on a port until power is good on that port. see section 11.23.2.1 in the usb specification. the value contained in the ?power_on_time? field is directly reported to the host, and is determined by internal default, or serial port load. table 7.11 class-specific hub descriptor (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 58 revision 1.1 (02-07-13) datasheet 6 hubcontrcurrent 1 user maximum current requirements of the hub controller electronics in 1 ma increm ents. see section 11.23.2.1 in the usb specification fo r additional details on the use of this field. this field reports the maximu m current that only the hub consumes from upstream vbus when fully operational. this value includes all support circuitry associated with the hub (but does not include the current consumption of any permanently attached peripherals if the hub is part of a compound device). the hub supports self-powered and bus-powered operation. the self_bus_pwr bit (config_byte_1) defined in section 5.3.7, "register 06h: config_byte_1 - cfg1," on page 29 is used to determine which of the stored values are reported. the value reported to the host must coincide with the current operating mode, and will be determined by the following rules. the value that is reported to the host will be: ?hc_max_c_bp? if self_bus_pwr = ?0? ?hc_max_c_sp? if self_bus_pwr = ?1? ?hc_max_c_bp/sp? are defined in section 5.3.15 , and section 5.3.16, "register 0fh: hub controller max current for bus powered operation - hcmcb," on page 33 . in all cases the reported value is sourced from the hub controller max current data field (for self or bus power) that was determined by internal default, or serial port load. 7 deviceremovable 1 user indicates if port has a removable device attached. see section 11.23.2.1 in the usb specification. the value contained in the ?nr_device? field is directly reported to the host, and is determined by internal default, or serial port load. 8 portpwrctrlmask 1 ffh field for backwards usb 1.0 compatibility. table 7.11 class-specific hub descriptor (continued) offset field size value description
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 59 revision 1.1 (02-07-13) datasheet 7.5 string descriptors the usb3503 supports a 30 character manufacturer string descriptor, a 30 character product string and a 30 character serial string. 7.5.1 string descriptor zero (s pecifies languages supported) 7.5.2 string descriptor 1 (manufacturer string) 7.5.3 string descriptor 2 (product string) table 7.12 string descriptor zero offset field size value description 0 length 1 04h size of this descriptor. 1 descriptortype 1 03h str ing descriptor type. 2 langid 2 xxxxh language id code from lang_id_h and lang_id_l registers table 7.13 string descriptor 1, manufacturer string offset field size value description 0 length 1 yyh size of this descriptor. the yy value is created by taking the mfr_str_len{bytes} + 2{bytes} 1 descriptortype 1 03h str ing descriptor type. 2 string n string manufacturer string the string is located in the mfr_str register and the size (n) is held in the mfr_str_len register table 7.14 string descriptor 2, product string offset field size value description 0 length 1 yyh size of this descriptor. the yy value is created by taking the prd_str_len{bytes} + 2{bytes} 1 descriptortype 1 03h str ing descriptor type. 2 string n string product string the string is located in the prod_str register and the size (n) is held in the prd_str_len register
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 60 revision 1.1 (02-07-13) datasheet 7.5.4 string descriptor 3 (serial string) table 7.15 string descri ptor 3, serial string offset field size value description 0 length 1 yyh size of this descriptor. the yy value is created by taking the ser_str_len{bytes} + 2{bytes} 1 descriptortype 1 03h str ing descriptor type. 2 string n string serial string the string is located in the ser_str register and the size (n) is held in the ser_str_len register
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 61 revision 1.1 (02-07-13) datasheet chapter 8 battery charging in order to detect the charger, the device app lies and monitors voltages on the usbup_dp and usbup_dm pins. if a voltage within the specified range is detected, the charger detection register in the i 2 c register space shall be updated to reflect the proper status. 8.1 downstream port b attery charging support the usb3503 can configure any of the downstream ports to sup port battery charger handshake. the hub?s role in downstream battery charging is to provide an acknowledge to a device?s query as to if the hub system supports usb battery charging. the hub silicon does not provide any current or power fets or any such thing to actually char ge the device. those components would need to be provided as external components in the final hub board design. if the final hub board design provi des an external supply capable of supplying current per the battery charging specification, the hub can be configured to indicate the presence of such a supply to the device. this indication is on a per/ port basis. i.e. the board can conf igure two ports to support battery charging (thru high current power fet?s) and leave the other port as a standard usb port. 8.1.1 usb battery charging in the terminology of the usb battery charging specific ation, if the port is configured to support battery charging, the downstream port is a ?charging host port?. all ac/dc characteristics will comply with only this type. if the port is not configured to su pport battery charging, the port is a ?standard host port?. ac/dc characteristics comply with the usb 2.0 specification. a downstream port will only behave as a ?charging host port? or a ?standard host port?. the port will not switch between ?charging host po rt? or standard host port? at an y time after initial power-up and configuration. 8.1.2 special behavior of prtpwr register the usb battery charging specific ation does not address system issues . it only defines a low level protocol for a device and host (or hub) to communicate a simple question and optional answer. device queries if the host to which it is connected supports battery charging. the host will respond that it does support battery charging or does not respond at all. there is no negative response. (a lack of respons e is taken as a negative response) figure 8.1 battery charging external power supply soc vbus prtpwr usb3503 (serial mapped register) int scl sda dc power
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 62 revision 1.1 (02-07-13) datasheet when ports are configured for downstream battery charging, the corresponding prtpwr setting will be controlled by downstream battery chargi ng logic instead of the normal hub logic. prtpwr setting will assert after initial hub custom er configuration (internal default/serial register writes). prtpwr will remain asserted and under t he control of the battery charge logic until one of two events. 1. an overcurrent is detected on the corresponding ocs_n pin. in this case, prtpwr setting will negate. the only way to re-enable the prtpwr setting from this state is to reset the usb3503. 2. the hub enters hub.communication stage, connec ts on its upstream port and is enumerated by a usb host. in this case, control over the prtpwr setting reverts back to the hub logic inside the usb3503 and the normal usb behavior applies. in this case, the host must enable prtpwr. since the enumeration process for a hub sets t he port_power feature for all downstream ports, this information can be used to switch control ov er the prtpwr setting between the battery charge logic and the hub logic. ? when the hub port_power feature is ?1?, th e hub logic controls the prtpwr setting. ? when the hub port_power feature is ?0?, th e battery charging logic controls the prtpwr setting. no matter which controller is controlling the prtp wr setting, an overcurrent event will always negate prtpwr setting. 8.1.3 battery char ging configuration configuration of ports to support battery charging is done through serial port configuration load. register d0: downstream battery charging enable - bc_en is allocated for battery charging support. the register, starting from bit 1, enables battery charging for each down stream port when asserted. bit 1 represents port 1 and so on. each port with battery charging enabled asserts the corresponding prtpwr register bit.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 63 revision 1.1 (02-07-13) datasheet chapter 9 integrated power regulators 9.1 overview the integrated power regulators are designed to provide significant flex ibility to the system in providing power to the usb3503. several different configurations are allowed in order to align the usb3503 power structure to the supp lies available in the system. 9.1.1 3.3v regulator the usb3503 has an integrated regulator to convert from vbat to 3.3v. 9.1.2 1.2v regulator the usb3503 has an integrated regulator to convert from a variable voltage input on vdd_core_reg to 1.2v. the 1.2v regulator shall be tolerant to the presence of low voltage (~0v) on the vdd_core_reg pin in order to support sy stem power solutions where a 1.8v supply is not always present in low power states. the 1.2v regulator shall support an input voltage ran ge consistent with a 1.8v input in order to reduce power consumption in systems which provide mult iple power supply levels. in addition the 1.2v regulator shall support an input voltage up to 3.3v for systems which provide only a single power supply. the device will support operation where the 3.3v regulator out put can drive the 1.2v regulator input such that vbat is the only required supply. 9.2 power configurations the usb3503 support operation with no back current when power is connected in each of the following configurations. 9.2.1 single supply configurations 9.2.1.1 vbat only vbat should be tied to the vbat system supp ly. vdd33_byp regulator ou tput and vdd_core_reg should be tied together on the boar d. in this configuration the 3.3v regulator will be active, and the 3.3v to 1.2v regulator will be active. 9.2.1.2 3.3v only vbat should be tied to the 3.3v system supply. vdd33_byp and vdd_core_reg pins should be tied together on the board. in this configuration, the 3.3v regulat or will operate in dropout. the 1.2v regulator will be active. 9.2.2 double suppl y configurations 9.2.2.1 vbat + 1.8v vbat should be tied to the vbat system supply. vdd33_byp regulator output requires external capacitor. vdd_core_reg should be tied to the 1.8v system supply. in this co nfiguration, the 3.3v regulator and the 1.2v regulator will be active.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 64 revision 1.1 (02-07-13) datasheet 9.2.2.2 3.3v + 1.8v vbat should be tied to the 3.3v system supply. vdd33_byp should be connected to the 3.3v external capacitor. vdd_core_reg should be tied to the 1.8v system s upply. in this conf iguration the 3.3v regulator will operate in dropout. the 1.2v regulator will be active. 9.3 regulator control signals the regulators are controlled by reset_n . when reset_n is brought high the vdd33 regulator will turn on. when reset_n is brought low the vdd33 regulator will turn off.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 65 revision 1.1 (02-07-13) datasheet chapter 10 specifications 10.1 absolute maximum ratings note: stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: this is a stress rating only and functional opera tion of the device at any other condition above those indicated in the oper ation sections of this s pecification is not implied. note: when powering this device from laboratory or syst em power supplies, it is important that the absolute maximum ratings not be exceeded or device failure can result. some power supplies exhibit voltage spikes on their outputs when t he ac power is switched on or off. in addition, voltage transients on the ac power line may appear on the dc output. when this possibility exists, it is suggested t hat a clamp circuit be used. 10.2 recommended operating conditions table 10.1 absolute maximum ratings parameter symbol conditions min max units vbat v bat -0.5 5.5 v vdd_core_reg v dd_core_reg -0.5 4.6 v vdd33 v dd33_byp -0.5 4.6 v maximum io voltage to ground v io -0.5 4.6 v refclk voltage v max_refclk -0.5 3.6 v voltage on usb+ and usb- pins v max_usb -0.5 5.5 v operating temperature t max_op commercial 0 70 c operating temperature t max_op industrial -40 85 c storage temperature t max_stg -55 150 c table 10.2 recommended operating conditions parameter symbol conditions min typ max units vbat v bat 2.9 5.5 v vdd_core_reg v dd_core_reg note 10.1 1.6 1.8 2.0 v vdd_core_reg v dd_core_reg note 10.2 3.0 3.3 3.6 v input voltage ( dp , dm) v iusb -0.3 5.5 v
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 66 revision 1.1 (02-07-13) datasheet note 10.1 applicable only when vdd_core_reg is supplied from external power supply. note 10.2 applicable only when vdd_core_reg is tied to vdd33_byp . 10.3 operating current the following conditions are assumed unless otherwise specified: v bat = 3.0 to 5.5v; v dd_core = 1.6 to 2.0v; v ss = 0v; t a = 0c to +70c (commercial), -40c to +85c (industrial) input voltage ( strobe , data) v ihsic -0.3 1.2 1.32 v input voltage on i/o pins v i -0.3 1.8 3.6 v voltage on refclk v refclk -0.3 3.6 v ambient temperature t a commercial 0 70 c ambient temperature t a industrial -40 85 c table 10.3 operating current (dual supply) parameter symbol conditions min typ max units high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 3 downstream ports active 55 65 68 ma i core(hs) 29 33 38 ma high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 2 downstream ports active, 1 port disabled 33 43 45 ma i core(hs) 26 28 35 ma high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 1 downstream port active, 2 ports disabled 19 23 25 ma i core(hs) 22 24 30 ma high speed usb operation with upstream hsic i vbat(hs) high speed idle reset_n = 1 3 downstream ports enabled, no usb data transfer 20 21 23 ma i core(hs) 24 25 29 ma high speed usb operation with upstream hsic i vbat(hs) high speed idle reset_n = 1 1downstream port enabled, no usb data transfer 12 13 14 ma i core(hs) 19 20 23 ma unconfigured (high speed) i vbat(unconf) reset_n = 1 7 8 10 ma i core(unconf) 17 18 22 ma table 10.2 recommended operating conditions (continued) parameter symbol conditions min typ max units
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 67 revision 1.1 (02-07-13) datasheet the following conditions are assumed unless otherwise specified: v bat = 3.0 to 5.5v; v ss = 0v; t a = 0c to +70c (commercial), -40c to +85c (industrial) standby mode i vbat(stdby) reset_n = 0 commercial temp 00.42.5 a i core(stdby) 000.5 a standby mode i vbat(stdby) reset_n = 0 industrial temp 00.63.9 a i core(stdby) 000.9 a suspend mode i vbat(spnd) usb suspend commercial temp 65 73 110 a i core(spnd) 125 165 765 a suspend mode i vbat(spnd) usb suspend industrial temp 65 73 125 a i core(spnd) 125 165 1050 a table 10.4 operating current (single supply) parameter symbol conditions min typ max units high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 3 downstream ports active 88 98 110 ma high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 2 downstream ports active, 1 port disabled 69 72 80 ma high speed usb operation with upstream hsic i vbat(hs) active usb transfer reset_n = 1 1 downstream port active, 2 ports disabled 45 48 55 ma high speed usb operation with upstream hsic i vbat(hs) high speed idle reset_n = 1 3 downstream ports enabled, no usb data transfer 47 50 53 ma high speed usb operation with upstream hsic i vbat(hs) high speed idle reset_n = 1 1downstream port enabled, no usb data transfer 34 35 36 ma unconfigured (high speed) i vbat(unconf) reset_n = 1 28 29 30 ma standby mode i vbat(stdby) reset_n = 0 commercial temp 00.62.6 a table 10.3 operating current (dual supply) (continued) parameter symbol conditions min typ max units
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 68 revision 1.1 (02-07-13) datasheet 10.4 dc characterist ics: digital i/o pins note: t a = -40 ? c to 85 ? c note 10.3 for i2c interface using pullups to less than 2.1v. note 10.4 for i2c interface using pullups to greater than 2.1v. standby mode i vbat(stdby) reset_n = 0 industrial temp 00.63.1 a suspend mode i vbat(spnd) usb suspend commercial temp 215 250 925 a suspend mode i vbat(spnd) usb suspend industrial temp 215 250 1330 a table 10.5 digital i/o characteristics parameter symbol conditions min typ max units low-level input voltage v il note 10.3 -0.3 0.42 v low-level input voltage v il note 10.4 -0.3 0.34 v high-level input voltage v ih 1.25 vdd33_byp + 0.3v v low-level input voltage reset v il_rst -0.3 0.38 v high-level input voltage reset v ih_rst 1.0 vdd33_byp + 0.3v v low-level input voltage osc v il_osc -0.3 0.55 v high-level input voltage osc v ih_osc 0.8 vdd33_byp + 0.3v v low-level input voltage refclk v il_ref -0.3 0.5 v high-level input voltage refclk v ih_ref 1.4 vdd33_byp + 0.3v v clock input capacitance refclk c in 2pf low-level output voltage v ol @ i ol =12ma sink current 0.4 v pin capacitance cpin 2 20 pf output current capability i o 12 20 24 ma table 10.4 operating current (single supply) (continued) parameter symbol conditions min typ max units
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 69 revision 1.1 (02-07-13) datasheet 10.5 dc characteristics: analog i/o pins table 10.6 dc characteristics: analog i/o pins (dp/dm) parameter symbol conditi ons min typ max units ls/fs functionality input levels differential receiver input sensitivity v difs | v(dp) - v(dm) | 0.2 v differential receiver common-mode voltage v cmfs 0.8 2.5 v single-ended receiver low level input voltage v ilse 0.8 v single-ended receiver high level input voltage v ihse 2.0 v single-ended receiver hysteresis v hysse 0.050 0.150 v output levels low level output voltage v fsol pull-up resistor on dp; r l = 1.5k ? to v dd33_byp 0.3 v high level output voltage v fsoh pull-down resistor on dp, dm; r l = 15k ? to gnd 2.8 3.6 v termination driver output impedance for hs z hsdrv steady state drive 40.5 45 49.5 ? input impedance z inp rx, rpu, rpd disabled 1.0 m ? pull-dn resistor impedance r pd note 10.5 14.25 16.9 20 k ? hs functionality input levels hs differential input sensitivity v dihs | v(dp) - v(dm) | 100 mv hs data signaling common mode voltage range v cmhs -50 500 mv hs squelch detection threshold (differential) v hssq 100 150 mv hs disconnect threshold v hsdsc 525 625 mv output levels high speed low level output voltage (dp/dm referenced to gnd) v hsol 45 ? load -10 10 mv
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 70 revision 1.1 (02-07-13) datasheet note 10.5 the resistor value follows the 27% resistor ecn published by the usb-if. 10.6 dynamic characteri stics: digital i/o pins 10.7 dynamic characteri stics: analog i/o pins high speed high level output voltage (dp/dm referenced to gnd) v hsoh 45 ? load 360 440 mv high speed idle level output voltage (dp/dm referenced to gnd) v olhs 45 ? load -10 10 mv leakage current off-state leakage current i lz 10 a port capacitance transceiver input capacitance c in pin to gnd 5 10 pf table 10.7 dynamic characteristi cs: digital i/o pins (reset_n) parameter symbol condit ions min typ max units minimum active low pulse on reset_n t reset reset_n = ?0? 100 s table 10.8 dynamic characterist ics: analog i/o pins (dp/dm) parameter symbol condit ions min typ max units fs output driver timing fs rise time t fr c l = 50pf; 10 to 90% of |v oh - v ol | 420ns fs fall time t ff c l = 50pf; 10 to 90% of |v oh - v ol | 420ns output signal crossover voltage v crs excluding the first transition from idle state 1.3 2.0 v differential rise/fall time matching t frfm excluding the first transition from idle state 90 111.1 % ls output driver timing ls rise time t lr c l = 50-600pf; 10 to 90% of |v oh - v ol | 75 300 ns table 10.6 dc characteristics: an alog i/o pins (d p/dm) (continued) parameter symbol conditi ons min typ max units
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 71 revision 1.1 (02-07-13) datasheet 10.8 regulator outp ut voltages and capacitor requirement 10.9 esd and latch-up performance ls fall time t lf c l = 50-600pf; 10 to 90% of |v oh - v ol | 75 300 ns differential rise/fall time matching t lrfm excluding the first transition from idle state 80 125 % hs output driver timing differential rise time t hsr 500 ps differential fall time t hsf 500 ps driver waveform requirements eye pattern of template 1 in usb 2.0 specification high speed mode timing receiver waveform requirements eye pattern of template 4 in usb 2.0 specification data source jitter and receiver jitter tolerance eye pattern of template 4 in usb 2.0 specification table 10.9 regulator output voltages and capacitor requirement parameter symbol conditi ons min typ max units regulator output voltage v dd33 5.5v > vbat > 2.9v 2.8 3.3 3.6 v regulator capacitor c byp33 4.7 f capacitor esr c esr33 1 ? regulator output voltage v dd12 3.6v > vdd33 > 2.8v 1.1 1.2 1.3 v regulator capacitor c byp12 1.0 f capacitor esr c esr12 1 ? table 10.10 esd and latch-up performance parameter conditions min typ max units comments esd performance human body model 5 kv device system en/iec 61000-4-2 contact discharge 15 kv 3rd party system test table 10.8 dynamic characteristics: analog i/o pins (d p/dm) (continued) parameter symbol condit ions min typ max units
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 72 revision 1.1 (02-07-13) datasheet 10.10 esd performance the usb3503 is protected from esd strikes. by eliminating the requirement for external esd protection devices, board space is conserved, and the board manufacturer is enabled to reduce cost. the advanced esd structures integr ated into the usb3503 protect t he device whether or not it is powered up. 10.10.1 human body model (hbm) performance hbm testing verifies the ability to withstand the esd strikes like those that occur during handling and manufacturing, and is done without power applied to the ic. to pass the test, the device must have no change in operation or performance due to the ev ent. all pins on the usb3503 provide 5 kv hbm protection, as shown in table 10.10 . 10.10.2 en 61000-4-2 performance the en 61000-4-2 esd specification is an international standard that addresses system-level immunity to esd strikes while the end equipment is operationa l. in contrast, the hbm esd tests are performed at the device level with the device powered down. smsc contracts with independent laboratories to test the usb3503 to en 61000-4-2 in a working system. reports are available upon request. please contact your smsc repr esentative, and request information on 3rd party esd test results. the reports show that systems designed with the usb3503 can safely provide the esd per formance shown in without addi tional board level protection. in addition to defining the esd tests, en 61000-4-2 also categorizes the impact to equipment operation when the strike occurs (esd resu lt classification). bo th air discharge and contact discharge test techniques for applying stress conditions ar e defined by the en 61000-4-2 esd document. 10.10.3 air discharge to perform this test, a charged electrode is moved close to the system being tested until a spark is generated. this test is difficult to reproduce because the discharge is influenced by such factors as humidity, the speed of approach of the electrode, and constr uction of the test equipment. 10.10.4 contact discharge the uncharged electrode first contacts the pin to pr epare this test, and then the probe tip is energized. this yields more repeatable results, and is the pr eferred test method. the independent test laboratories contracted by smsc provide test result s for both types of discharge methods. system en/iec 61000-4-2 air-gap discharge 15 kv 3rd party system test latch-up performance all pins eia/jesd 78, class ii 150 ma table 10.10 esd and latch-up performance (continued) parameter conditions min typ max units comments
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 73 revision 1.1 (02-07-13) datasheet 10.11 ac specifications 10.11.1 refclk external clock:50% duty cycle 10%, 350ppm, jitter < 100ps rms. 10.11.2 serial interface the smsc hub conforms to ac s pecifications as set forth in t he i2c specification for slave-only devices. 10.11.3 usb 2.0 the smsc hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the usb 2.0 spec ification. please refer to the usb 2.0 specification which is available from the www.usb.org web site. 10.11.4 usb 2.0 hsic the upstream port of the smsc hs ic hub conforms to all voltage, power, and timing characteristics and specifications as set forth in the high-speed inter-chip usb electrical specification version 1.0. please refer to the usb 2.0 hsic spec ification which is available from the www.usb.org web site.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 74 revision 1.1 (02-07-13) datasheet chapter 11 application reference 11.1 application diagram the usb3503 requires several external components to function and insure compliance with the usb 2.0 specification. table 11.1 component values in application diagrams reference designator value description notes c vdd12byp 1.0 f capacitor to ground for regulator stability. place as close to the usb3503 as possible c vdd33byp 4.7 f capacitor to ground for regulator stability. place as close to the usb3503 as possible c out 0.1 f bypass capacitor to ground. place as close to the usb3503 as possible r bias 12.0k series resistor to establish reference voltage used by analog circuits. place as close to the usb3503 as possible r pu1 10k or 1k pull-up for i2c bus. 10k for 100khz or 400khz operation. 1k for 1mhz operation. r pu2 10k (or greater) pull-up for open-drain outputs table 11.2 capacitance values at vbus of usb connector port min value max value downstream 120 f
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 75 revision 1.1 (02-07-13) datasheet note: while reset_n is driven low, all other inputs from applications proc essor should also be driven low in order to minimize current draw. note: to disable a downstream port, tie dp and dm to vdd33_byp pin of the usb3503. figure 11.1 internal chip-to-chip interface r bias rbias usbdn3_dp usbdn3_dm usbdn2_dm usbdn2_dp int_n hub_connect sda scl refclk vdd_i2c r pu1 r pu1 usb3503a-1 vss vdd33_byp vdd_core_reg vdd12_byp c vdd12byp c vdd33byp c out c out +1.8v vbat vbat vdd33_byp connect pins to either vdd33_byp or gnd. ref_sel0 ref_sel1 usbdn1_dm usbdn1_dp strobe data vdd_intn r pu2 reset_n applications processor 3g baseband processor lte baseband processor port_pwr ocs_n vdd33_byp port 1 disabled ocs_n tied to vdd33_byp when unused.
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 76 revision 1.1 (02-07-13) datasheet figure 11.2 internal chip-to-chip interface with embedded host port r bias rbias usbdn3_dp usbdn3_dm usbdn2_dm usbdn2_dp int_n hub_connect sda scl refclk vdd_i2c r pu1 r pu1 usb3503a-1 vss vdd33_byp vdd_core_reg vdd12_byp c vdd12byp c vdd33byp c out c out +1.8v vbat vbat vdd33_byp connect pins to either vdd33_byp or gnd. ref_sel0 ref_sel1 usbdn1_dm usbdn1_dp strobe data vdd_intn r pu2 reset_n applications processor 3g baseband processor lte baseband processor port_pwr ocs_n dp dm vbus gnd fault en +5v vbus embedded host port +5v
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet revision 1.1 (02-07-13) 77 smsc usb3503a datasheet chapter 12 package outlines, tape & reel drawings, package marking figure 12.1 wlcsp25, 1.97 x1.97mm body, 0.4mm pitch
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet revision 1.1 (02-07-13) 78 smsc usb3503a datasheet figure 12.2 wlcsp25, tape and reel
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 79 revision 1.1 (02-07-13) datasheet figure 12.3 wlcsp25, reel dimensions
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 80 revision 1.1 (02-07-13) datasheet figure 12.4 wlcsp25, tape sections figure 12.5 reflow profile and critical parameters for lead-fr ee (snagcu) solder
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 81 revision 1.1 (02-07-13) datasheet figure 12.6 package marking
usb 2.0 hsic high-speed hub controller optimized for portable applications datasheet smsc usb3503a 82 revision 1.1 (02-07-13) datasheet chapter 13 datasheet revision history table 13.1 customer revision history revision level & date secti on/figure/entr y correction rev. 1.1 (02-07-13) document co-branded: micr ochip logo added, company disclaimer modified. rev. 1.1 (12-19-11) table 4.2, "timing parameters for hub stages" removed the second sentence in the standby summary: ?all port interfaces are high impedance? section 4.2.1, "external hardware reset_n" removed second bullet: ?the usb data pins will be in a high-impedance state.? table 3.4, "usb3503 secondary reference clock frequencies" changed frequency values in ta b l e 3 . 4 as follows: 01 = 27.0mhz 10 = 25.0mhz rev. 1.0 (10-24-11) document release

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