General Description
The VSC7125 is a full-speed Fibre Channel Transceiver optimized for Disk Drive and other space constrained applications. It accepts 10-bit 8B/10B encoded transmit data, latches it on the rising edge of REFCLK and serializes it onto the TX PECL differential outputs at a baud rate which is ten times the REFCLK frequency. The VSC7125 also samples serial receive data on the RX PECL differential inputs, recovers the clock and data, deserializes it onto the 10-bit receive data bus, outputs two recovered clocks at one twentieth of the incoming baud rate and detects Fibre Channel “Comma” characters. The VSC7125 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
• 10 Bit TTL Interface for Transmit and Receive Data
• Monolithic Clock Synthesis and Clock Recovery - No External Components
• 106.25 MHz TTL Reference Clock
• Low Power Operation - 650 mW
• Suitable for Both Coaxial and Optical Link Applications
• 64 Pin, 10mm or 14mm PQFP
• Single +3.3V Power Supply