BCM5680 ? BCM5680 8-port gigabit switch on a chip non-blocking 8-port multi-layer gigabit switch ? switch fabric to deliver 12-mpps switching performance, providing line rate throughput independent of protocol layer processed layer 2 through 7 filtering and contentaware? packet classification, at full line rate on all ports integrated buffer memory configurable to be static, dynamically allocated, or both highly efficient data memory packing eight 10/100/1000 ethernet macs gigabit stacking support for higher density system requirements ieee 802.1 support q => support for vlan d => support for spanning tree p => support for traffic classification 8k mac and 2k ip address tables on chip flexible link aggregation on any port port mirroring support low-power 3.3/2.5v operation 400-pin tbga package represents the highest level of silicon integration achieved for a complete eight-port gigabit switch, integrating the switch fabric, macs, address tables and packet buffering functions. the highly programmable filter engine (ffp) supports wire-speed pack-by-packet filtering and classification, making the BCM5680 the ideal choice for sophisticated switching applications. supports a wide range of choices in user management costs, featuring both an i2c and a 33/66 mhz pci interface. supports four levels of cos; maps to 802.1p priority levels. provides advanced packet flow control with hol prevention, backpressure support, and packet rate control (802.3x). at 3 msec, the BCM5680 provides the world?s lowest latency for an eight-port gigabit switch. the BCM5680 seamlessly integrates with the bcm5600 (24 fast ethernet plus 2 gigabit ethernet ports), the bcm5602 and other BCM5680s to provide high levels of flexibility in network system designs. features summary of benefits bcm5404 phy or fiber xcvr bcm5404 phy or fiber xcvr gpic gpic gpic gpic gpic gpic gpic gpic BCM5680 gmii 8b/10b gmii 8b/10b gmii 8b/10b gmii 8b/10b gmii 8b/10b gmii 8b/10b gmii 8b/10b gmii 8b/10b cmic l2-l7 contentaware tm layer 3 ip 512 kb packet buffer cpu micro- controller i2c pci bridge system bus sdram flash serial port pci bus 32-bit 33/66 mhz
overview ? phone: 949-450-8700 fax: 949-450-8710 e-mail: info@broadcom.com web: www.broadcom.com broadcom corporation 16215 alton parkway, p.o. box 57013 irvine, california 92619-7013 ? 2004 by broadcom corporation. all rights reserved. 5680-pb07-r 07/08/04 broadcom ? , the pulse logo, 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. 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. 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. gmii / tbi gmii / tbi gmii / tbi gmii / tbi gmii / tbi gmii / tbi gmii / tbi gmii / tbi cpu / if 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 pci/serial cpu interface non-blocking switch fabric 512 kb packet buffer l2/l3/l4= arl tables 4 cos queues
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