The CY7B923 HOTLink, Transmitter and CY7B933 HOTLink Receiver are point-to-point communications building blocks that transfer data over high-speed serial links (fiber, coax, and twisted pair). Standard HOTLink data rates range from 160-330 Mbits/second. Higher speed HOTLink is also available for high-speed applications (160-400 Mbits/second), as well as for those low-Cost applications HOTLink-155 (150-160 Mbits/second operations). Figure 1 illustrates typical connections to host systems or controllers. Eight bits of user data or protocol information are loaded into the HOTLink transmitter and are encoded. Serial data is shifted out of the three differential positive ECL (PECL) serial ports at the bit rate (which is ten times the byte rate). The HOTLink receiver accepts the serial bit stream at its differential line receiver inputs and, using a completely integrated PLL Clock Synchronizer, recovers the timing information necessary for data reconstruction. The bit stream is deserialized, decoded, and checked for transmission errors. Recovered bytes are presented in parallel to the receiving host along with a byte-rate clock.