BC M5 70 2 O V E R V I E W

®

Phone: 949-450-8700

Fax: 949-450-8710

E-mail: info@broadcom.com

Web: www.broadcom.com

BROADCOM CORPORATION

16215 Alton Parkway, P.O. Box 57013

Irvine, California 92619-7013

© 2005 by BROADCOM CORPORATION. All rights reserved.

5702-PB05-R

01/05/05

Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other

trademarks mentioned are the property of their respective owners.

The BCM5702 is a fully-integrated 10/100/1000BASE-T Gigabit

Ethernet media access control and physical layer transceiver solution for

high-performance network applications. The BCM5702 is a highly-

integrated solution combining a triple-speed, IEEE 802.3 compliant

media access controller (MAC), PCI bus interfaces, an on-chip buffer

memory, and an integrated physical layer transceiver in a single device.

The BCM5702 is fabricated in a low-voltage 0.13-µm CMOS process,

providing a low-power system solution. By itself the BCM5702 provides

a complete, single-chip, Gigabit Ethernet NIC or LOM solution.

The BCM5702 includes a 10/100/1000-Mbps Ethernet MAC with full/

half-duplex capability at all speeds and a 10/100/1000 copper PHY.

Support for the following 802.3 functions is featured in the MAC: VLAN

tagging, layer 2 priority encoding, link aggregation, and full-duplex flow

control.

The BCM5702 provides a PCI v2.2 bus interface. It also provides large

on-chip buffer memory for stand-alone operation. Dual, on-chip, high-

performance processors enable custom frame processing features,

including TCP segmentation.

The transceiver is fully compatible with the IEEE 802.3 standard for

auto-negotiation of speed. Additionally, several Plug and Play

enhancements have been added to make the device even more user-

friendly. A link quality indicator LED gives installers an instant visual

indication if there are any issues with the wiring plant supporting

operation at the desired speed, which include physical wiring defects or

channel conditions, such as excessive cable length, return loss, crosstalk,

echo, and noise. Broadcom’s remote cable management and diagnostics

software can be used with the device to provide remote management of

the cable and a first level of diagnostics and fault isolation.

The BCM5702 continually monitors various channel conditions. The

optional wirespeed capability allows the BCM5702 to force auto-

negotiation to be automatically limited by the speed that the channel can

reliably support, rather than by the performance of the end equipment.

Target Applications of the BCM5702

BCM5702 Operating Systems

• PXE 2.0

RX

TX

10/100/1000

PHY

10/100/1000

MAC

Dual Processor

PLL

LED Control

LED Signals

SMB Interface EEPROM Interface

SMBus

EEPROM

Control

32-KB

Memory

PLL

Buffer

Memory

PCI

PCI

Bus

PCI

CLK

BASE-T

BASE-T

SINGLE/DUAL PORT

SINGLE/DUAL PORT

Network interface card (NIC) designs

LAN on Motherboard (LOM) designs

10/100/1000

PCI 2.2 Adapters

10/100/1000

PCI 2.2 LOM

Gigabit Ethernet network interface cards (NICs) and LAN on Motherboard

(LOM) applications for desktop and mobile PCs