O V E R V I E W
I2C Bus
HiGig (10 Gbps)
HiGig (10 Gbps)
HiGig (10 Gbps)
HiGig (10 Gbps)
PCI Bus
Port 4
Port 3
Port 2
Port 1
Port 0
XAUI
XAUI
MAC
XAUI
MAC
XAUI
MAC
I2C I/F
PCI
MAC
DMA Buffers
FIFO
FIFO
FIFO
FIFO
CMIC Bus Interface
MR Bus Controller
MMU
128 KB
RAM
MMU
128 KB
RAM
MMU
128 KB
RAM
MMU
128 KB
RAM
Ingress
Ingress
Ingress
Ingress
BCM5671
General Description
20 Gbps (10 Gbps, full-duplex). The BCM5671 switch fabric
interconnects other StrataXGS component chips across an 80-Gbps
backplane. It introduces very low switching latency, enabling the high-
quality transmission of voice, video, and data traffic. The primary
application of the BCM5671 is stackable solutions and linecard
applications.
The Broadcom BCM5671 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.
Flexible Management
Highly Integrated
The BCM5671 HiGig switch links to a host CPU through a PCI bus at
speeds 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 BCM5671 switch.
The integration of Broadcom’s robust XAUI-compatible serializer/
deserializer (SerDes) interface on each BCM5671 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.
The BCM5671 switch can also work without host CPU support, using an
I2C interface to initialize chip registers and forwarding tables. The
BCM5632 can also link to a BCM5671 via an XGMII-to-XAUI
converter, such as the BCM8011.
Superior Performance
The BCM5671 delivers wire speed switching performance across all the
ports simultaneously. The effective bandwidth of each HiGig interface is
Broadcom®, the pulse logo, HiGig™ 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
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
© 2004 by BROADCOM CORPORATION. All rights reserved.
5671-PB05-R
03/25/04
BOARDCOM [ Broadcom Corporation. ]
