GL822 usb 2.0 sd 3.0/mmc/ms card reader controller product overview genesys logic, inc.
GL822 product overview ?2012 genesys logic, inc. - all rights reserved. page 2 copyright copyright ? 2012 genesys logic, inc. all rights reserved. no part of the materials shall be reproduced in any form or by any means without prior written consent of genesys logic, inc. ownership and title genesys logic, inc. owns and retains of its right, title and interest in and to all materials provided herein. genesys logic, inc. reserves all rights, including, but not limited to, all patent rights, trademarks, copyrights and any other propriety rights. no license is granted hereunder. disclaimer all materials are provided ?as is?. genesys logic, inc. makes no warranties, express, implied or otherwise, regarding their accuracy, merchantability, fitness for any pa rticular purpose, and non-infringement of intellectual property. in no event shall genesys logic, inc. be liable for any damages, including, without limitation, any direct, indirect, consequential, or incidental damages. the materials may contain errors or omissions. genesys logic, inc. may make changes to the materials or to the products described herein at anytime without notice. genesys logic, inc. 12f., no. 205, sec. 3, beixin rd., xindian dist. 231, new taipei city, taiwan tel : (886-2) 8913-1888 fax : (886-2) 6629-6168 http ://www.genesyslogic.com
GL822 product overview ?2012 genesys logic, inc. - all rights reserved. page 3 chapter 1 general description the GL822 is a usb 2.0 sd 3.0 uhs-i memory card reader single chip. it supports usb 2.0 high-speed transmission to secure digital tm (sd), sdhc, minisd, microsd (t-flash), multimediacard tm (mmc), rs-mmc, mmcmicro, mmcmobile, memory stick tm (ms), memory stick duo tm (ms duo), high speed memory stick tm (hs ms), memory stick pro tm (ms pro), memory stick pro tm duo (ms pro duo), memory stick pro-hg tm (ms pro-hg) and ms pro micro on one chip. it also supports next generation huge density memory cards (up to 2tb), such as sdxc and memory stick xc. as a single chip solution for usb 2.0 flash card reader, the GL822 complies with univ ersal serial bus specification rev. 2.0, usb storage class specification ver.1.0, and sd /mmc card interface specification. the GL822 integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between usb and flash card interfaces. its? pin assignm ent design fits to card sockets to provide easier pcb layout. inside the chip, it integrates 5v to 3.3v and 3.3v to 1.8v regulators and power mosfets and it enables the function of on-chip clock source (occs) which means no external 12mhz xtal is needed and that effectively reduces the total bom cost.
GL822 product overview ?2012 genesys logic, inc. - all rights reserved. page 4 chapter 2 features ? usb specification compliance - comply with 480mbps universal serial bus specification rev. 2.0 - comply with usb storage class specification rev. 1.0 - support one device address and up to four endpoints: control (0)/ bulk read (1)/ bulk write (2)/interrupt (3) ? integrated usb building blocks - usb 2.0 transceiver macro (utm), serial interface engine (sie), build-in power-on reset (por) ? embedded 8051 micro-controller - embedded mask rom and internal sram ? secure digital tm (sd) - support sd specification v1.0 / v1.1 / v2.0/ sdhc (up to 32gb) - support sd specification v3.0 uhs-i: sdr25/sdr50/ddr50/sdr104 - support 1.8v/3.3v switch signal pads - support up to 208 mhz clock frequency - support sdxc (up to 2tb) ? multimediacard tm (mmc) - support mmc specification v3.x / v4.0 / v4.1 / v4.2. - x1 / x4 / x8 bit data bus ? memory stick tm / memory stick pro / memory stick pro duo / memory stick micro /memory stick pro-hg / memory stick xc - comply with memory stick specification: ms 1.43 / ms pro 1.05 / ms hg micro 1.00 / ms pro-hg duo 1.03 with 8-bit data bus / ms xc 1.00 - support read/write quad data access (512bytex4) fo r ms pro-hg to enhance the transmission rate ? on chip clock source (occs) and no need of 12mhz crystal clock input. ? on-chip 5v to 3.3v and 3.3v to 1.8v regulators ? support 5v to 3.3v band gap regulator for stable voltage supply ? provide over-current protection m echanism for safety power supply ? on-chip power mosfets for supplying flash media card power ? support power saving mode/ selective suspend mode for better power management. available in qfn-28(a) and lqfp-48 package. ? support external serial eeprom inte rface for the flexibility to load the vendor in formation and system options. only available in lqfp-48 package. ? package available in 28 pin qfn (5x5 mm) , 28 pin ssop (209 mil) and 48 pin lqfp(7x7 mm) table 2.1 - product difference overview package type version power source power management ssop-28 01, 03, ?n 5v not support qfn-28 (a) 01, 03, ?n 3.3v power saving mode/ selective suspend mode qfn-28 (b) 02, 04, ?n+1 5v not support lqfp-48 01, 03, ?n 5v/3.3v power saving mode/ selective suspend mode
GL822 product overview ?2012 genesys logic, inc. - all rights reserved. page 5 chapter 4 block diagram functional block diagram occs usb phy the usb 2.0 transceiver macrocell is the analog circuitry that handles the low level usb protocol and signaling, and shifts the clock domain of the data from the usb 2.0 rate to one that is compatible with the general logic. on chip clock source and no need of 12mhz crystal clock input. sie the serial interface engine, which contains the usb pi d and address recognition logic, and other sequencing and state machine logic to handl e usb packets and transactions. epfifo endpoint fifo includes control fifo (fifo0), interrupt fifo (fifo3), bulk in/out fifo ? control fifo fifo of control endpoint 0. it is 64-byte fifo and used for endpoint 0 data transfer. ? interrupt fifo 64-byte depth fifo of endpoint 3 for status interrupt ? bulk in/out fifo it can be in the tx mode or rx mode: 1. it contains ping-pong fifo (512 bytes each bank) for transmit/receive data continuously. 2. it can be direc tly accessed by micro-controller
GL822 product overview ?2012 genesys logic, inc. - all rights reserved. page 6 mcu 8051 micro-controller inside. ? 8051 core compliant with intel 8051 high speed micro-controller ? rom fw code on rom ? sram internal ram area for mcu access ? mhe ? mif media interface: sd/mmc/ms/ms pro/ms pro-hg ? mcfifo it can access by mcu for memory card short data packet. regulator ? 5v to 3.3v band gap regulator for stable voltage supply for usb phy, pmos.. when power source is 3.3v, the 5v to 3.3v regulator will be disabled. ? 3.3v to 1.8v for core logic and internal memory. pmos on-chip power mosfets provide over -current protection mechanism.
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