O V ERVI EW

®

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

© 2004 by BROADCOM CORPORATION. All rights reserved.

5706-PB04-R

03/31/04

or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the

property of their respective owners.

The BCM5706 provides a fully integrated Layer 4 and Layer 5 solution

- TCP/IP, RDMA and iSCSI 1.0/iSER along with a complete 10/100/

1000BASE-T Gigabit Ethernet, IEEE 802.3 compliant Media Access

Control (MAC) and Physical Layer Transceiver solution for high

performance network applications. By itself the BCM5706 provides a

complete single-chip Gigabit Ethernet NIC with a TCP/IP Offload

Engine, RDMA NIC (RNIC), iSCSI 1.0/iSER HBA or LOM solution.

The BCM5706 is different from other network controllers because it can

process the TCP/IP and relevant L5 protocols on data directly from the

application buffers on the host, therefore relieving the host CPU from

these time-consuming operations. On the receive path, the BCM5706

processes the frame up to the highest layer supported present in it, e.g.,

the BCM5706 processes the frame for RDMA when the frame is an

RDMA frame.

With the appropriate configuration, the BCM5706 can simultaneously

support any two of the following three functions:

• RDMA Network Interface Controller (RNIC)

• iSCSI or iSER Host Bus Adapter

• TOE Chimney enabled network accelerator

Target Applications of the BCM5706

• Gigabit Ethernet NICs and LAN-on Motherboard (LOM)

• ISCSI 1.0 / iSER Host Bus Adapters (HBA)

• RDMA Network Interface Card (RNIC)

RX

TX

25 MHz

10/100/1000

PHY

10/100/1000

MAC

Dual Processor

PLL

LED Control

LED Signals

SMB Interface

EEPROM Interface

SMBus

EEPROM

Control

TCP,

RDMA,

iSCSI

Context

Memory

TCP,

RDMA,

iSCSI

Code

PLL

Buffer

Memory

PCI/PCI-X

PCI/PCI-X

Bus

PCI

Clk

BASE-T

BASE-T

BASE-SX

BASE-LX

BASE-SX

BASE-LX

PCI 2.3 Adapters

PCI 2.3 Adapters

PCI 2.3 Adapters

PCI 2.3 LOM

PCI 2.3 LOM

PCI 2.3 LOMPCI

Network Interface Cards (NIC) designs

LAN on Motherboard (LOM) designs

10/100/1000

10/100/1000

1000

1000

1000

1000

PCI-X v1.0 Adapters

PCI-X v1.0 Adapters

PCI-X v1.0 Adapters

PCI-X v1.0 LOM

PCI-X v1.0 LOM

PCI-X v1.0 LOM