GENERAL DESCRIPTION:
The VSC8239 device is a dual 10 Gbps Clock-and-Data-Recovery unit (CDR) designed for use as a signal conditioner IC for XFP modules. This 5 mm x 5 mm single chip solution has advantages of cost, size, and feature set over existing two chip solutions. A two-wire serial interface provides versatile control and alarm access.

FEATURES:
Small size – 32-Pin, QFP (5 mm x 5 mm) package
9.953 Gbps to 11.3 Gbps operation
Integrated loopback functions
Programmable gain and equalization for Rx and Tx
Two-wire Serial Interface/SPI Serial Control Interface
10 mV typical input sensitivity
Built In Self Test (BIST) features including flexible error detection modes
Full XFP compliant jitter specifications

APPLICATIONS:
Fully compatible with the complete family of Vitesse XFP module application products including 10 Gbps SERDES, Host ASIC family: VSC8476, VSC8478, VSC8479, and 10 Gbps laser drivers and TIAs: VSC7980, VSC7981, VSC7982, VSC7985, VSC7978, and VSC7979.