BCM5708S
®
SINGLE-PORT 1000/2500BASE-X ETHERNET CONTROLLER WITH
INTEGRATED TCP OFFLOAD ENGINE, RDMA, iSCSI WITH PCI EXPRESS
®
FEATURES
•
Single-chip solution for LAN-on Motherboard (LOM) and
Network Interface Card (NIC) applications
•
Integrated 1000/2500BASE-X SerDes
- SGMII support
•
Host interfaces
- PCI Express
®
x4 Host interface
- Auto-negotiation between 1G and 2.5G modes
TCP offload engine
•
Full fast-path TCP offload
iSCSI controller
•
iSCSI initiator
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
•
Receive Side Scaling (RSS)
•
TCP, IP checksum
•
TCP segmentation
•
Adaptive interrupts
•
Message Signal Interrupt (MSI) support
Robust manageability
•
Universal Management Port (UMP)
•
PXE 2.0 remote boot
•
Wake-On LAN
•
IPMI pass-through feature
•
Statistics 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
On-chip power circuit controller
400-ball 21 mm x 21 mm FBGA package
3.3V I/Os
JTAG
SUMMARY OF BENEFITS
•
Industry’s first 1000/2500 SerDes-based TOE solution—power
•
•
and space optimized for server blade and low-profile NIC
applications
Extremely low CPU utilization for TCP/IP applications
•
Host CPU is free to run application code.
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.
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
•
2.5 Gigabit Ethernet
•
RSS reduces CPU utilization on multi-CPU systems.
•
MSI allows interrupt distribution in a multi-CPU host system.
•
PCI Express host interface allows a low-latency access to CPU
and memory resources.
Robust and highly manageable
•
UMP enables high bandwidth out-of-band system management
functionality over shared infrastructure.
•
PXE 2.0, ACPI 1.1, Wake-On LAN
•
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
Low power for zero airflow implementations
•
Advanced power management
Minimal real estate—ideal for LOM
•
On-chip power circuit controller
•
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OVERVIEW
RX
10/100/1000/2500
MAC
Buffer
Memory
Memory Controller
1000/2500
SerDes
TX
TCP/IP
Offload
Engine
iSCSI
Protocol
Offload
RDMA
Protocol
Engine
PCI Express
®
x4
Clock
PLL
PCI Express
®
LED Control
UMP
SMBus
SFLASH
Control
LED Signals
UMP Interface
SMB Interface
SFLASH Interface
The BCM5708S provides a fully integrated Layer 4 and Layer 5 solution
– TCP/IP, RDMA, and iSCSI along with a complete 1000/2500BASE-X
Gigabit Ethernet, IEEE 802.3 compliant Media Access Control (MAC),
and Physical Layer Transceiver solution for high performance network
applications. By itself, the BCM5708S provides a complete single-chip
Gigabit Ethernet NIC with a TCP/IP Offload Engine, RDMA NIC
(RNIC), iSCSI HBA, or LOM solution.
The BCM5708S 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, thereby relieving the host CPU from
these time-consuming operations. On the receive path, the BCM5708S
processes the frame up to the highest layer supported present in it, for
example, the BCM5708S processes the frame for RDMA when the
frame is an RDMA frame.
With the appropriate configuration, the BCM5708S can simultaneously
support the following three functions:
•
RDMA network interface controller (RNIC)
•
iSCSI host bus adapter
•
TOE chimney-enabled network accelerator
Target Applications of the BCM5708S
•
•
•
•
Gigabit Ethernet NICs and LAN-on Motherboard (LOM)
2.5 Gigabit Ethernet Server Blade Applications
ISCSI Host Bus Adapters (HBA)
RDMA network interface card (RNIC)
Network Interface Cards (NIC) designs
LAN on Motherboard (LOM) designs
1000/2500
1000
PCI Express x4 NIC
BASE-SX/LX
BASE-X
PCI Express
x4, x2, or x1 LOM
Broadcom
®
, the pulse logo,
Connecting everything
®
, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
5708S-PB06-R
10/10/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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