User-Selectable, On-chip Receive Termination at Either 100

or 150

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

FEA TURES:

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

VSC7142 Dual Repeater/Retimer for Fibre Channel and Gigabit Ethernet

DATACOM PRODUCTS

PB-VSC7142-001

VSC7142

BLOCK DIAGRAM:

1

0

MUX2

MUX0

MUX3

0

1

MUX1

0

1

1

0

Fibre

Timer0

I0+

I0

−

I1+

I1

−

Fibre

Timer1

O0+

O0

−

O1+

O1

−