The 78Q2132 is a 1/10 Ethernet transceiver. This dual speed transceiver interfaces to a 1Mbps Home LAN and a 10BASE-T network. The Home LAN interface is fully Home Phoneline Networking Alliance (HomePNA) compliant extending Ethernet over POTS. The HomePNA interface includes the pulse encoder and decoder plus transmit and receive line interface filters. Only a telco transformer and external protection devices are required to complete the interface. The 78Q2132 also integrates MII and General Purpose Serial Interface (GPSI) MAC interfaces. The 10BASE-T Ethernet channel includes Manchester ENDEC and transmitter with an on-chip pulse-shaper and a low-power line driver. The 10BASE-T transceiver interfaces to Category-3 unshielded twisted pair (Cat-3 UTP) cabling. The HomePNA port is connected to the line via a HomePNA compatible 1:1 transformer having a series capacitor in the line side and the Ethernet port is connected to the line via 1:1 (Rx) and 1.414:1 (Tx) isolation transformers. No external filtering is required. Communication to the MAC is accomplished through an IEEE-802.3 compliant media independent interface (MII) or GPSI. The product is designed for high performance and low power operation, and can operate from a single 3.3 V or 5 V supply.