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BCM5402
PRODUCT
(R)
Brief
OF BENEFITS
BCM5402 DUAL-PORT 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
BCM5402 FEATURES SUMMARY
* Two fully integrated 10BASE-T/100BASE-TX/ a single 1000BASE-T Gigabit Ethernet transceivers on
Fully compliant with IEEE 802.3, 802.3u, and 802.3ab * standards * Low power
* Less than 2W per port * Advanced power management * Wake On LAN mode--less than 600 mW per port
TM
monolithic CMOS chip
* MII, GMII, TBI, RGMII, and RTBI interface options automatically selects * Ethernet@WireSpeed on channel conditions the maximum speed based * Cable plant diagnostic
Low power dual-port integration enables high * density switches and dual-port adapter cards. port Compatible devices operating * 10, 100, and with IEEE standardand full-duplex. at 1000 Mbps at half* No airflow or heatsink required. LAN mode for low power PC'99 * Wake on (less than 600 mW per-port). compliant adapters RGMII/RTBI reduces * and TBI by more than I/O pin requirement over GMII 50%. link to the * Automatically configures the on link support capability highest possible speed based partner Cable diagnostic function plant * condition and immediatelycharacterizes cableissues. indicates cabling 125-MHz clock * circuitry for theeliminates costly external clocking MAC/ASIC. Operates with larger wider range * protocol support and packets forefficiency. of packet improved High density package options without heatsink * requirement provides improved testability.
* Prevents erroneous equipment return due to bad cable plants. * Prevents manufacturing fall-out due to bad cable plants.
and characteristics of the channel.
* Internal 125-MHz low-jitter clock generation * Support for jumbo packets up to 9 KB * IEEE 1149.1 (JTAG) boundary scan * 256-pin TBGA and 260FPBGA
* Cable plant analyzer function detects cable plant impairments * Link quality indication LED * Automatic detection and correction of wiring pair swaps, pair skew, and pair polarity * Automatic MDI/MDIX crossover at all speeds
BCM5402 System Diagram
BCM5402 10/100/1000 Mbps Ethernet Switch BCM5402 BCM5402 BCM5402
10/100/1000BASE-T Gigabit Ethernet Transceiver
Dual Transformer
Dual Transformer
Dual Transformer
RJ-45 Connectors
Dual Transformer
BCM5402
OVERVIEW
BCM5402 Block Diagram
Symbol 16 TX DAC Encoder Echo Canceller XTALK Canceller x3 Symbol Decoder/ Aligner TXD[7:0]{1:2}* TX_EN{1:2}* TX_ER{1:2}* GXT_CLK{1:2}* TX_CLK{1:2}* COL{1:2}* CRS{1:2}* RX_CLK{1:2}* RX_DV{1:2}* RX_ER{1:2}* RXD[7:0]{1:2}* LNK100{1:2}* LED Drivers LNK1000{1:2}* RCVLED{1:2}* XMTLED{1:2}* FDXLED{1:2}* MDC MDIO INTR{1:2}* MODES
TRD[3:0] + {1:2}*
Gain Automatic Control
PGA
ADC
FFE
DFE/ Trellis Decoder
AutoNegotiation XTALI XTALO RDAC{1:2}* REGSUP{1:2}* REGCNTL{1:2}* REGSEN{1:2}* Clock Generation BIAS Generation Voltage Regulator
Timing & Phase Recovery
MII Registers
MII MGMT Control
*{1:2} Refers to the first and second Gigabit transceiver in the BCM5402
The BCM5402 consists of two complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip in a 256-pin TBGA and 260FPBGA package. The BCM5402 is optimized for low power and small footprint size enabling high port density applications. The package dimension is narrower than the width of two RJ-45 connectors to simplify board layout and component placement. This device represents the third generation of Gigabit Ethernet transceivers based on the same field-proven architecture as in the BCM5400 and BCM5401 transceivers. These devices have proven robust operation over the installed base of CAT 5 twisted pair wiring. The BCM5402 is fully software and register compatible with the previous BCM5400 and BCM5401. The Digital Signal Processor based architecture and advanced power management techniques combine to achieve robust and low power operation over the existing CAT 5 twisted pair wiring. Several special low power modes can be used to further reduce power. Dissipating less than 600 mW per port, the wake-on-LAN mode enables the BCM5402 to be used for adapters and in LANon-motherboard (LOM) solutions for personal computers that meet the stringent standby power requirements for PC'99 compliance. Each port is fully independent and has individual interface, control and status registers. In addition to supporting IEEE 802.3 Standard Gigabit Media Independent Interface (GMII), and
industry-standard Ten Bit Interface (TBI), the BCM5402 also supports the RGMII interface. RGMII is a reduced pin-count (12 versus 25) version of the GMII utilizing standard ASIC technology. The BCM5402 is fully compatible with the IEEE 802.3 standard for auto-negotiation of speed. Additionally, several Plug and Play enhancements are added to make the device even more userfriendly. A link quality indicator LED gives installers an instant visual indication if there are any problems with the wiring plant supporting operation at the desired speed. This includes physical wiring defects that the BCM5402 cannot automatically correct for and channel conditions such as excessive cable length, and return loss, crosstalk, echo, and noise. Broadcom's cable analyzer software can be used with the device to provide remote management of the cable and a first level of diagnostics and fault isolation. The Ethernet@WireSpeedTM capability allows the BCM5402 to auto-negotiate to the maximum data rate allowed by the cable plant. This feature prevents failure to establish link because of cable plant impairment at higher data rates.
Broadcom(R), the pulse logo, and Connecting everything(R) are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 5402-PB02-R 06.25.03
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

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