VSC7146_1272017

The VSC7146_1272017 is a 2.5Gb/s Transceiver optimized for ease-of-use and efficiency in high-performance data transmission systems. The VSC7146 accepts two 10-bit 8b/10b encoded transmit characters, latches them on the rising edge of Transmit Byte Clock (TBC) and serializes the data onto the TX+/- differential outputs at a baud rate, which is 20 times the TBC frequency. The VSC7146_1272017 also samples serial receive data on the RX+/- ifferential 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 VSC7146 contains on-chip Phase-Lock Loop (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.