BCM5675
®
BCM5675 8-PORT, 192-GBPS SWITCH FABRIC
FEATURES
•
Eight 10-Gbps and 12-Gbps (HiGig+™) configurable switch
fabric ports
•
Nonblocking, 192-Gbps wirespeed, backplane/switch fabric
performance
•
Forwarding rate of 144 million packets/second
SUMMARY OF BENEFITS
•
System vendors can build high-performance, high-density
•
•
•
•
•
Gigabit Ethernet LAN switches in several form factors
Very low latency and advanced QoS enable seamless
integration of voice, video, and data traffic
Built-in high-speed XAUI interfaces with Broadcom-unique
SerDes technology eases and accelerates system design, while
reducing cost and conserving board space
Large internal data buffer memory eliminates the need for
expensive external memory
Drives up to 10m of low-cost copper cables backplane and
stacking support
Broadcom switch API compatibility enables reuse of resources
and fast time-to-market
•
•
•
•
Multistage switch fabric scalable up to 1.5 Tbits
Eight integrated high-speed XAUI interfaces
Eight programmable priority queues per port
Port trunking (up to 8 ports) and mirroring across multiple
devices
•
Hot-swap capable with AC coupling
•
Supports redundancy on linecards for chassis-based
applications
•
Advanced diagnostic features including IEEE 1149.1 boundary
scan, JTAG, and extensive BIST functionality
•
Resilient link configuration through active multi-path
forwarding
•
PCI and I
2
C interface
TARGET APPLICATIONS
•
Switch fabric in modular Gigabit Ethernet chassis
•
Switch fabric in high-port-count stand-alone or stackable
Gigabit Ethernet switches
•
Switch fabric for in-server switch blade applications
•
Packet-based switch fabric in telecom applications
•
•
•
•
Broadcom switch API compatibility
Advanced 0.13-µm CMOS technology
Small 600-pin EBGA package; pin-compatible with BCM5670
Low power consumption
Nonblocking 8-Port Gigabit Switch
10G/
12G
10G/
10G
12G
HiGig+
Interface
HiGig+
HiGig+ HiGig+
10G/
12G
HiGig+
HiGig+ HiGig+
10G/
12G
QUEUE SYSTEM
FORWARDING TABLES
CMIC
RAM
10G/
12G
HiGig+
10G/
12G
HiGig+
10G/
12G
4 channels
of 3.125/3.75
Gbps
(XAUI I/F)
10G/
12G
HiGig+
Protocol
Processor
OVERVIEW
Functional Design of BCM5675-Based 48-Port GE Switch With 2 x 10 GE Ports and Stacking
2 x 10GE
2 x HiGig+
SDRAM
BCM5675
PCI
FLASH
BCM8703
BCM5673
CPU
BCM5695
BCM5695
BCM5695
BCM5695
BCM5464
BCM5464
BCM5464
BCM5464
12 x GE
General Description
12 x GE
12 x GE
12 x GE
The Broadcom BCM5675 switch fabric is the central component of the
modular and highly scalable StrataXGS™ Gigabit Ethernet switch
architecture. StrataXGS components can be applied in a wide variety of
configurations, enabling system designers to strategically balance cost,
port density, and performance in the products they build.
Scalability
Switches based on the BCM5675 offer world-class scalability and
performance when used in conjunction with other StrataXGS family
components. A BCM5675-based switch fabric can scale up to as many
as 1,536-GE ports or 128 10-GE ports in the same network. A multistage
switch fabric using the StrataXGS family can have a bandwidth capacity
of up to 1.5 Tbits.
Highly Integrated
The integration of Broadcom’s robust XAUI-compatible serializer/
deserializer (SerDes) interface on each BCM5675 port reduces board
complexity. The XAUI interface can be used to route high-speed signals
across 44 inches of FR4, connectors, and backplanes. SerDes technology
also enables the use of inexpensive cables for stacking applications.
Superior Performance
The BCM5675 delivers wirespeed switching performance across all of
the ports simultaneously. The effective bandwidth of each HiGig+™
interface is 24 Gbps (12 Gbps, full-duplex). The BCM5675 switch fabric
offers a backplane capacity of up to 192 Gbps and can interconnect with
other StrataXGS components for switch fabric of up to 1.5 Tbits. It
introduces very low switching latency, enabling the high-quality
transmission of voice, video, and data traffic.
Flexible Management
The BCM5675 HiGig+ switch links to a host CPU through a PCI bus at
speeds of up to 66 MHz. Bus mastering and advanced DMA are
supported in hardware for the efficient exchange of packet data between
CPU memory and the BCM5675 switch.
The BCM5675 switch can also work without host CPU support, using an
I
2
C interface and external microcontroller to initialize chip registers and
forwarding tables.
Broadcom
®
, the pulse logo
Connecting everything
®
,
HiGig™,
and
StrataXGS™
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
© 2003 by BROADCOM CORPORATION. All rights reserved.
5675-PB01-R
03/29/04
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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