BOARDCOM BCM5706

BCM5706
®
10/100/1000BASE-T TCP OFFLOAD ENGINE, RDMA, ISCSI/ISER AND
ETHERNET CONTROLLER
SUMMARY OF BENEFITS
FEATURES
• Single-chip solution for LAN on Motherboard (LOM) and
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Network Interface Card (NIC) applications
• Integrated 10BASE-T/100BASE-TX/1000BASE-T transceivers
• Integrated SerDes (BCM5706S)
• Host interfaces
- PCI v2.3—32/64 bits, 33/66 MHz
- PCI-X v1.0—64 bits, 66/100/133 MHz
TCP offload engine
• Full “fast Path” TCP offload
• Designed for Microsoft’s TOE Chimney Architecture
iSCSI controller
• iSCSI initiator
• iSER (iSCSI over RDMA)
RDMA controller (RNIC)
• RDMA over TCP (iWARP)—RDMAC 1.0 compliant
• Hardware-based data placement in application buffers without
CPU intervention (for User and Kernel modes)
Other performance features
• TCP, IP checksum
• TCP segmentation
• Adaptive interrupts
• Message Signal Interrupt (MSI) support
Robust manageability
• PXE 2.0 remote boot
• Alert Standard Format (ASF v1.0) support
• Wake-On LAN
• IPMI 'pass-through' mode
• Statistic gathering (SNMP MIB II, Ethernet like MIB, Ethernet
MIB (802.3x, clause 30))
• Comprehensive diagnostic and configuration software suite
• ACPI 1.1a compliant—power management
Advanced network features
• Virtual LANs—802.1q VLAN tagging
• Jumbo frames (9 KB)
• 802.3x flow control
Low-power CMOS design
• Industry’s smallest 10/100/1000 TOE solution—power and
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On-chip power circuit controller
400-ball 21x21 mm FBGA package
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3.3V I/Os
JTAG
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space optimized for LOM and low-profile NIC applications.
Extremely low CPU utilization for TCP/IP applications
• Host CPU is free to run application code
• Easy integration with Microsoft’s TOE Chimney Architecture
Accelerated IP-based storage
• Lower CPU utilization for file-level storage protocols such as
CIFS and NFS
• iSCSI functionality with low CPU utilization
RDMA support for data placement in application buffers
reduces CPU utilization and lowers data transit latencies. The
result is improved application performance and faster user
response time.
Interoperable with:
• Broadcom’s Gigabit controller family – BCM570x
• Existing Ethernet 10/100/1000 network infrastructure
Future-proof
• Flexible implementation for TCP, iWARP and iSCSI can
accommodate specification changes and interoperability issues
Performance-focused – optimized for throughput and CPU
utilization
• Adaptive interrupts
• MSI allows interrupt distribution in a multi-CPU host system
• Support for PCI-X—allows sufficient bandwidth for wire
speed operation
Robust and highly manageable
• PXE 2.0, ACPI 1.1, Wake-On LAN, ASF 1.0
• Integrated cable testing—link quality, length, pair skew, pair
polarity, pair swap
• IPMI 'pass-through' capability allows on-board management
controllers access to the network in OS-present and OS-absent
states
Server class reliability, availability and performance features
• Link aggregation and load balancing
- Switch-dependent
• 802.3ad (LACP), generic trunking (GEC/FEC)
- Switch and NIC independent
• PCI hot plug
Low power for zero airflow implementations
• Advanced power management
Minimal real estate—ideal for LOM
• On-chip power circuit controller
OVERVIEW
Memory Controller
10/100/1000
MAC
RX
10/100/1000
PHY
TX
Dual Processor
25 MHz
PLL
Memory
TCP,
RDMA,
iSCSI
Context
SMBus
EEPROM
Control
LED Signals
SMB Interface
EEPROM Interface
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
PCI/PCI-X
Bus
PCI/PCI-X
TCP,
RDMA,
iSCSI
Code
LED Control
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.
Buffer
Memory
PCI
Clk
PLL
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)
Network Interface Cards (NIC) designs
10/100/1000 PCI 2.3 Adapters
LAN on Motherboard (LOM) designs
10/100/1000 PCI 2.3 LOM
BASE-T
PCI-X v1.0 Adapters
BASE-T
PCI-X v1.0 LOM
1000
BASE-SX
PCI 2.3 Adapters
PCI-X v1.0 Adapters
1000
BASE-SX
PCI 2.3 LOM
PCI-X v1.0 LOM
1000
BASE-LX
PCI 2.3 Adapters
PCI-X v1.0 Adapters
1000
BASE-LX
PCI 2.3 LOMPCI
PCI-X v1.0 LOM
Broadcom®, the pulse logo, and Connecting everything® are trademarks of 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.
®
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
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com