This document is about the technical data of MC68160A/D device, it is a BiCMOS device that supports both IEEE 802.3 Access Unit Interface (AUI) and 10BASE-T Twisted Pair (TP) Interface media connections through external isolation transformers. It encodes NRZ data to Manchester data and supplies the signals that are required for data communication via 10BASE-T or AUI interfaces. MC68160A gluelessly interface to the Ethernet controller contained in the MC68360 Quad Integrated Communications Controller (QUICC) device. MC68160A also interfaces easily to most other industry-standard IEEE 802.3 LAN controllers. Prior to twisted pair data reception, Smart Squelch circuitry qualifies input signals for correct amplitude, pulse width, and sequence requirements.