The TLK2201 and TLK2201I gigabit ethernet transceivers provide for ultrahigh-speed full-duplex point-to-point data transmissions. These devices are based on the timing requirements of the 10-bit interface specification by the IEEE 802.3 Gigabit Ethernet specification. The TLK2201 supports data rates from 1.0 Gbps through 1.6 Gbps and the TLK2201I supports data rates from 1.2 Gbps through 1.6 Gbps.