BCM5680B2KTBG*ERC Broadcom, BCM5680B2KTBG*ERC Datasheet - Page 2

• Manufacturer Part Number: BCM5680B2KTBG*ERC
• Manufacturer: Broadcom

Specifications of BCM5680B2KTBG*ERC

• Lead Free Status / RoHS Status: Compliant

The Broadcom BCM5680 represents the highest level of cost-reduction
and integration available for the Gigabit Ethernet market. A Broadcom-
based eight-port gigabit switch reduces today’s costs by as much as 50%
over competing solutions.
The PCI interface provides a high-speed, flexible mechanism for
network system management. Its ability to run either 33 MHz or 66 MHz
gives users the flexibility to choose between bandwidth and cost when
designing a managed solution. Integrated features such as Scatter/Gather
DMA supports advanced management software requirements.
Alternatively, an I2C compatible interface is supported.
The 10/100/1000 megabit interface enables users to connect at any speed
required on a given port. This triple-speed interface automatically
negotiates to support legacy devices alongside newer, high-bandwidth
devices, all in the same switch.
Broadcom
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.
5680-PB07-R
®
, the pulse logo, and Connecting everything
07/08/04
GMII / TBI
GMII / TBI
GMII / TBI
GMII / TBI
GMII / TBI
GMII / TBI
GMII / TBI
GMII / TBI
CPU / IF
®
PCI/Serial CPU Interface
®
are trademarks of Broadcom Corporation and/
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
10/100/1000 GMAC
O V E R V I E W
The interface permits the use of a BCM8002 SerDes for fiber optics, a
quad BCM5404 Gigabit PHY for 1000TX, or a standard 100TX PHY.
The integrated 512 KB data packet memory eliminates the need for
external data packet storage. The memory organization and structure can
be optimized to provide a minimum fixed allocation of buffer space per
port and a dynamic pool size, to absorb any bursty traffic requirements.
The integrated L2, L3, and filtering tables deliver industry-leading
switching performance. The BCM5680 achieves full wirespeed layer 2
and layer 3 switching on all ports. Additionally, its innovative
architecture supports wirespeed layer 2 through layer 7 filtering,
utilizing a 35 Gbps internal high speed bus.
Higher density configurations are easily achieved through link-
aggregating multiple ports or stacking ports from box to box. Stand-
alone configurations can easily achieve 24-Gigabit ports using only five
devices with no external memory required.
4 CoS Queues
Switch Fabric
Packet Buffer
Non-Blocking
ARL Tables
L2/L3/L4=
512 KB
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E-mail: [e-mail]
Web: www.broadcom.com