General Description

The VSC8122 is a single-chip clock recovery IC for use in SONET OC-48, OC-24, OC-12, OC-3, or Giga-bit Ethernet systems operating at their respective 2.48832Gb/s, 1.24416Gb/s, 622.08Mbps, 155.52Mbps, or 1.25Gbps data rates. The VSC8122 complies with SONET jitter tolerance, jitter transfer and jitter generation specifications.

Features

• Multi-Rate OC-3, OC-12, OC-24, OC-48 Clock

and Data Recovery

• Supports Gigabit Ethernet

• Differential Back Terminated I/O

• Maintains Clock Output in the Absence of Data

• Selectable Reference Clock

• Loss of Lock Indicator

• Exceeds SONET/SDH Requirements for Jitter

Tolerance, Jitter Transfer and Jitter Generation.

• 3.3V Supply Operation

• 1W Typical Power

• 64-pin , 10x10mm PQFP Packaging