VSC7142RC

GENERAL DESCRIPTION

The VSC7142 contains two FibreTimer Repeater /Retimer cells and Signal Detect Units (SDUs) primarily used for bidirectional signal clean up applications. Each FibreTimer cell contains an all-digital clock recovery unit which can be configured as either a Repeater or a Retimer. Repeaters recover the incoming signal and retransmit the data synchronously to the recovered clock in order to attenuate jitter so that downstream devices see high amplitude, low jitter signals.

FEATURES
► Two FibreTimer™ Cells Configurable as:
- Repeaters for Low Latency
- Retimers for True Fibre Channel Compliance
- 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
► Supports Both 1.0625 Gb/s and 2.125 Gb/s Fibre Channel
Data Rates – Dual Mode Provides Flexibility by Having One
Device for New and Legacy Designs
► Supports 1.25 Gb/s Data Rates for Gigabit Ethernet Applications
► User-Selectable, On-chip Receive Termination at Either 100Ω
or 150Ω
► Speed Independent Tx and Rx Paths Aid in Fibre Channel
Auto-Speed Negotiation
► World-class Signal Integrity for Jitter Compliance – Reduces
Debug and Redesign Efforts
► Two Digital/Analog 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 –
Compensates for Deterministic Jitter Due to Long Traces
and Cables
► 106.25MHz or 125MHz Reference Clock
► 5V-tolerant LVTTL Inputs – Provides Design Flexibility and
Backward Compatibility
► Cable Equalization on all High-speed Inputs – Reliably
Recovers Jittery Signals
► Single 2.5V Supply – Reduces Wiring Complexity
► 64-pin, 10x10mm TQFP Package – Ideal for High Density
Designs