General Description

The VSC7122 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.

Features

• 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

• TTL Bypass Select

• High Speed, PECL I/O’s Referenced to VDD.

• 0.35W Typical Power Dissipation

• 3.3V Power Supply

• 44-Pin, 10mm PQFP