VSC872

INTELLIGENT SWITCH FABRIC FAMILY GigaStream ® G igaStream ® C hip Set (VSC872 & VSC882) 80 Gb/s Intelligent Switch Fabric A P P L I C AT I O N S : GigaStream can be used in many applications, including: - Access and Edge Routers - Enterprise Backbone Switch - 3G Wireless Gateway - Storage Area Networking - Remote Access Boxes - Core Routers - Multi-Service Platforms HIGHLIGHTS: Highly-Integrated, Two-Chip Set Aggregate User Bandwidth of up to 80 Gb/s Single-Stage Aggregate Backplane Bandwidth of up to 320 Gb/s Maximum Port Configurations of up to 32x32 OC-48 or 64x64 Gigabit Ethernet GIGASTREAM DIAGRAM: Line Card Queuing Engine Active Redundant Switch Card High Speed Serial Links Crossbar Switch Crossbar Switch CSIX Dual CSIX OC-48 Interfaces x16 Line Card Queuing Engine Crossbar Crossbar Switch Switch GiagStream eam Crossbar Crossbar Switch Switch Crossbar Switch Crossbar Switch CSIX Flexible N+1 and N+N “Active Redundancy" Schemes Dual CSIX OC-48 Interfaces Active Redundant Switch Card Integrated Queuing, Central Scheduling and Crossbar Switching Sophisticated QoS with Eight Priorities Advanced Unicast and Multi/Broadcast Support Field Proven, High-Speed 2.644 Gb/s Serial Link Technology PB-GIGASTREAM-002 GigaStream ® GigaStream ® C hip Set (VSC872 & VSC882) 80 Gb/s Intelligent Switch Fabric GENERAL DESCRIPTION: The GigaStream ® c hip set is a high performance synchronous switch fabric consisting of two integrated circuits: the GigaStream Queuing Engine (VSC872) and the GigaStream Crossbar Switch (VSC882). Targeted at the access, edge, and metropolitan markets, GigaStream enables networking equipment manufacturers to build routing and switching systems capable of providing a maximum of 80Gb/s of aggregate user bandwidth with up to 320Gb/s of highly available backplane bandwidth. GigaStream provides support for sophisticated Quality of Service (QoS) algorithms, distinct handling for both Unicast and Multi/Broadcast traffic, as well as multi-service support for IP, ATM, and Ethernet High Performance and Scalability GigaStream’s flexible architecture allows designers to increase aggregate switching capacity by adding GigaStream Crossbar Switches, scaling fabric backplane bandwidth in increments of 40Gb/s up to a maximum 320Gb/s. Each GigaStream Queuing Engine increases system port count by providing two additional OC-48 CSIX interfaces up to a maximum 32x32 OC-48 system configuration. GigaStream’s scalable architecture, in conjunction with its selfsynchronous serial link technology, provide the framework for next generation high-speed networking systems. High Availability With the special requirements of highly-reliable networking equipment in mind, the GigaStream switch fabric offers several features designed to simplify in-situ replacement or upgrades. These features include both N+1 and N+N redundant switch core protection schemes, hardware and software switchover for field maintenance and link failure conditions, fail-safe hotswappable buffers, as well as self-synchronizing link circuitry and link health monitoring, ensuring zero loss of traffic and continuous operation under failure. Efficient Bandwidth Utilization The GigaStream solution is a self-routing switch fabric featuring virtual output queuing (VOQ) to eliminate head of line blocking, sophisticated QoS mechanisms to facilitate classbased traffic management, and logical backplane link rates of up to four times aggregate user port bandwidths. The fabric includes an integrated scheduler and dedicated on-chip queuing for both Unicast and Multi/Broadcast traffic, featuring eight priority classes supporting both strict priority and weighted bandwidth allocation. High Integration Reduces Overall Cost The GigaStream switch fabric integrates advanced queuing and scheduling, a synchronous serial crossbar, and multiple channels of Vitesse’s proven high-speed serial link technology; all in a two-component fabric chip set. GigaStream is a lowpower solution that consumes only 1.4W per Gb/s of user bandwidth with the additional capability of powering-down unused serial links. This results in a high-performance, costeffective switch fabric with low overall chip count that minimizes power, design complexity and board space requirements. Specifications: Description Process Technology Package Information Maximum Power Dissipation Core Supply Voltage I/O Supply Voltage Serial Link Speed High-Speed Serial Channels VSC872 Queuing Engine 0.18 µm CMOS 440 TBGA 5W 1.8V 2.5V or 3.3V 2.125 - 2.644Gb/s 8 VSC882 Packet Exchange Matrix 0.18µm CMOS 304 TBGA 8W 1.8V 2.5V or 3.3V 2.125 - 2.644Gb/s 16 Your Partner for Success. 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 741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com ©2002 Vitesse Semiconductor Corporation