General Description
The VSC7123 is a full-speed Fibre Channel and Gigabit Ethernet Transceiver with industry-standard
pinouts. The VSC7123 accepts 10-bit 8B/10B encoded transmit data, latches it on the rising edge of REFCLK and serializes the data onto the TX PECL differential outputs at a baud rate which is 10 times the REFCLK frequency.

FEATUREs
•  802.3z Gigabit Ethernet-Compliant 1.25 Gb/s Transceiver
•  ANSI X3T11 Fibre Channel-Compliant 1.0625 Gb/s Transceiver
•  0.98 to 1.36 Gb/s Full-Duplex Operation
•  10-Bit TTL Interface for Transmit and Receive Data
•  Automatic Lock-to-Reference
•  RX Cable Equalization
•  Analog/Digital Signal Detection
•  JTAG Access Port for Testability
•  Single +3.3V Supply, 650mW Typical
•  Packages: 64-Pin 10mm and 14mm PQFP and 10mm TQFP