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VSC7121

Vitesse Semiconductor
Part Number VSC7121
Manufacturer Vitesse Semiconductor
Description Quad Port Bypass Circuit
Published Jan 3, 2007
Detailed Description www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC7121 Description • Supports ANSI X3T11 1.0625 Gbi...
Datasheet PDF File VSC7121 PDF File

VSC7121
VSC7121

Overview
www.
DataSheet4U.
com VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC7121 Description • Supports ANSI X3T11 1.
0625 Gbit/sec FC-AL Disk Attach for Resiliency • Fully Differential for Minimum Jitter Accumulation.
• Quad PBC’s in Single Package Quad Port Bypass Circuit for 1.
0625 Gbit/sec Fibre Channel Arbitrated Loop Disk Arrays • TTL Bypass Select • High Speed, PECL I/O’s Referenced to VDD.
• 0.
5W Typical Power Dissipation • 3.
3V Power Supply • 44-Pin, 10mm PQFP The VSC7121 is a Quad Port Bypass Circuit (PBC).
Four Fibre Channel PBC’s are cascaded into a single part to minimize part count, cost, high frequency routing, and jitter accumulation.
Port Bypass Circuits are used to provide resiliency in Fibre Channel Arbitrated Loop (FC-AL) architectures.
PBC’s are used within FC-AL disk arrays to allow for resiliency and hot swapping of FC-AL drives.
A Port Bypass Circuit is a 2:1 Multiplexer with two modes of operation: NORMAL and BYPASS.
In NORMAL mode, the disk drive is connected to ...


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