General Description

The VSC7126 is a full-speed Fibre Channel Transceiver optimized for Host Adapter and other space- constrained applications. It accepts two 10-bit 8B/10B encoded transmit characters, latches them on the rising edge of TBC and serializes the data onto the TX+/- PECL differential outputs at a baud rate which is twenty times the TBC frequency. It also samples serial receive data on the RX+/- PECL differential inputs, recovers the clock and data, deserializes it onto two 10-bit receive characters, outputs a recovered clocks at one twentieth of the incoming baud rate and detects Fibre Channel “Comma” characters. The VSC7126 contains on-chip PLL circuitry for synthesis of the baud-rate transmit clock, and extraction of the clock from the received serial stream. These circuits are fully monolithic and require no external components.

Features

• ANSI X3T11 Fibre Channel Compatible 1.0625

Gbps Full-duplex Transceiver

• GLM Compatible (FCSI-301-Rev 1.0)

• 20 Bit TTL Interface For Transmit And Receive Data

• Monolithic Clock Synthesis And Clock Recovery -

No External Components

• 53.125 MHz TTL Reference Clock

• Automatic Lock-to-Reference Function

• Suitable For Both Copper And Fiber

Optical Link Applications

• Low Power Operation - 850 mW

• 80 Pin, 14x14 mm PQFP

• Single +3.3V Power Supply