benefits: a standard 10 gbps interface provides 40 gbps of backplane bandwidth can provide eight traffic classes per queuing engine no switch chip is needed supports mesh mode configuration can operate in a dual star fabric configuration can connect directly to framers or macs can connect directly to npus and cpus can easily operate with existing gigastream devices tr affic is only sent to active and working switch chips features: spi4.2 interface 16 high-speed serial links dual ingress and egress queuing engines direct mode fabric mode framer interface packet interface interfaces with existing gigastream devices automatic load balancing across switch chips gigastream? 10 gbps queue manager with integrated spi4.2 interface network products pb-vsc0874-001 VSC874 applications: ip service appliances edge/access routers multi-service provisioning platforms 3g wireless platforms media gateways VSC874 10 gbps gigastream queue manager hssl manager hssl manager data processing data processing spi4.2 interface spi4.2 interface jtag interface jtag interface hssl load balancer spi4.2 phy logic reorder manager queuing/scheduling queuing/scheduling . . . . . . sche duler ingress queues egress queues sche duler packet segmentation static load balancer . . . reassembly buffers packet reassembly parallel interface (cpu) parallel interface (cpu) i2c interface (cpu) i2c interface (cpu) high speed serial links (hssl) high speed serial links (hssl) hssl manager hssl manager hssl load balancer reorder manager queuing/scheduling queuing/scheduling . . . . . . sche duler ingress queues egress queues sche duler high speed serial links (hssl) high speed serial links (hssl)
gigastream? 10 gbps queue manager with integrated spi4.2 interface VSC874 the VSC874 is a highly integrated 10 gbps queue manager part of vitesse?s gigastream family of intelligent switch fabric devices. th is de vi ce pr o vi des a standard-interface intelligent switching solution ideal for a variety of access/edge, metro, and core applications. ty pically, the VSC874 is used on a variety of line cards where it connects directly to media access controllers (mac), framers, and network processing units (npu). these line cards can then be interconnected using either a low-cost mesh without a switch device (?direct mode?) or traditional central-switch architecture (?fabric mode?). general description: 741 calle plano camarillo, ca 93012, usa te l: +1 805.388.3700 fax: +1 805.987.5896 www.vitesse.com for more information on vitesse products visit the vitesse web site at www.vitesse.com or contact vitesse sales at (800) vitesse or sales@vitesse.com vitesse, asic-friendly, fibretimer, timestream and snoop loop are trademarks of vitesse semiconductor corporation. all other trademarks or registered trademarks mentioned herein are the property of their respective holders. vitesse semiconductor corporation ("vitesse") retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. all information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. specifications: spi4.2 interface that can operate up to 16 gbps 16 high speed serial links that can operate up to 40 gbps can operate in direct mode or fabric mode spi4 interface can operate in framer mode or packet mode up to 16 traffic classes for unicast and multicast data provides spi4 burst segmentation and re-assembly au tomatic load balancing across one to sixteen vsc882 switch chips parallel and two-wire serial interface housed in a 672 bga package csix csix vsc872 queue manager 2.5 gbps or 5 gbps line cards spi4.2 VSC874 queue manager vsc882 switch fabric vsc882 switch fabric 10 gbps line cards switch card csix csix vsc872 queue manager spi4.2 VSC874 queue manager vsc882 switch fabric vsc882 switch fabric switch card xn xn spi4.2 VSC874 queue manager 10 gbps line card csix csix vsc872 queue manager 2.5 gbps or 5 gbps line card spi4.2 VSC874 queue manager 10 gbps line card spi4.2 VSC874 queue manager 10 gbps line card direct mode diagram: fabric mode diagram:
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