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BCM5691_

A Scalable Approach to Gigabit Ethernet

Broadcom Corporation 

■ BCM567x/BCM569x

White Paper

06/27/02

Another product, the BCM5691, supports 12 GE ports but no uplink, for use in standalone configurations. Both the BCM5690

and BCM5691 support a standard PCI bus for moving signals to and from the CPU and, in the case of the BCM5690, to a

PCI uplink.

StrataXGS chips are highly programmable, in that system designers can add value and differentiate their companies’

products by activating certain features with minor development work in software. Using the Broadcom API, new features are

easily added to the existing chip.

Product

BCM5670

BCM5690

BCM5671

BCM5691

Table 1: StrataXGS Chips

Function(s)

160-Gbps switch fabric. It is nonblocking,

allowing all ports to operate concurrently at

100% utilization.

• Switch-on-a chip

• Can be combined back-to-back with another

BCM5690 or to a BCM5670(s) to build bigger

systems and achieve higher port densities

• Eight BCM5690s can combine to scale from

12 to 96 GE ports

• Supports both Layer 2 and Layer 3

capabilities

80-Gbps switch fabric. It is nonblocking,

allowing all ports to operate concurrently at

100% utilization.

• Switch-on-a chip

• Supports both Layer 2 and Layer 3

capabilities

No. and Type of Ports Supported

Eight 10-Gbps ports

• Twelve 1-Gbps ports, each

running at 10/100 full- and half-

duplex or at 1 Gbps full-duplex

speeds

• One 10-Gbps uplink

Four 10-Gbps ports

Twelve 1-Gbps ports, each

running at 10/100 full- and half-

duplex or at 1 Gbps full-duplex

speeds

Page 6 StrataXGS Product Family

Broadcom Corporation

Document 567x_569x-WP100-R

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