The TLK3104SCGNT is a flexible four-channel serial backplane transceiver, delivering high-speed bidirectional point-to-point data and transmissions providing up to 10 Gbps of data transmission capacity. The TLK3104SCGNT supports an operating range of serial data rates from 3.1 Gbps to 3.125 Gbps. The primary application of this device is to provide building blocks for developing point-to-point baseband data transmission over controlled impedance media of approximately 50 . The transmission media can be printed-circuit board traces, copper cables, or fiber-optical media. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment. The TLK3104SCGNT performs the parallel-to-serial, serial-to-parallel conversion, and clock extraction functions for a physical layer interface. The TLK3104SCGNT also provides an 8-bit/10-bit (8-b/10-b) encode/decode function. The serial transmitter and receiver use differential PECL compatible signalings. The parallel interface supports a low voltage differential signaling (LVDS) interface. The purpose of the interface is to provide a simple, inexpensive, and easy-to-implement interconnection between the controller and PHY. The LVDS interface supports independent 4-bit wide transmit and receive data paths for full-duplex operation. The TLK3104SCGNT provides a comprehensive series of built-in tests for self-test purposes including internal serial loopback and PRBS generation and verification. An IEEE 1149.1 JTAG port is also supported. TLK3104SCGNT also has an MDIO/MDC serial port to provide certain control functions. The TLK3104SCGNT operates with a single 2.5-V supply and dissipates less than 3 W. The device is packaged in a 19 x 19 mm, 289 pin plastic ball grid array (PBGA) package and is characterised for operation from 40C to 75C.