GENERAL DESCRIPTION :

The VSC7147 expands Vitesses wide offering of Fibre Channel products with an IC for the growing 2.125Gb/s Fibre Channel storage market. The device features six Port Bypass Circuits (PBC) that support both 1.0625Gb/s and 2.125Gb/s Fibre Channel data rates. The VSC7147 enables Fibre Channel Disk Arrays, JBODs (Just a Bunch of Disks) and storage subsystem equipment designers to integrate more ports and disk drives and maintain consistently high signal quality using fewer components.

FEATURES :

? Industry’s first IC with six Port Bypass Circuits (PBC) supporting both 1.0625Gb/s and 2.125Gb/s Fibre Channel data rates – Dual mode provides flexibility by having one device for new and legacy designs

? Two FibreTimer? Cells configurable as:

- Repeaters for low latency

- Retimers for true Fibre Channel Compliance

- Reduces external retimer components, provides design flexibility by allowing mixing and matching of the functions for design optimization

? Digital design of the FibreTimers produce a device that is well controlled over voltage, process and temperature variations Provides a more robust and reliable design

? User-selectable, on-chip receive termination at either 100? or 150?

? Speed independent Tx and Rx paths aid in Fibre Channel Auto-Speed Negotiation – Allows the device to migrate as the specification evolves

? Device can be strapped for 1 or 2Gb/s operation – Supports dual speed storage applications

? World-class signal integrity for jitter compliance – Reduces debug and redesign efforts

? Two digital Signal Detect Units to detect the presence of valid Fibre Channel encoded serial data - Improves signal detect reliability

? User selectable Pre-Emphasis on all high-speed outputs - distorts outputs signal for improved signal driving over long trace and cable distances

? 106.25MHz reference clock

? 5V-tolerant LVTTL inputs – Provides design flexibility and backward compatibility

? Cable equalization on all high-speed inputs – Manages and corrects signal latency and distortion

? Single 2.5V supply - Reduces wiring complexity

? 100-pin, 14mm exposed pad TQFP package - Ideal for compact JBOD designs