The TNETE2004 QuadPHY interface device is a single-chip, multi-PHY (four 10BASE-T devices), high-performance solution for designers of 10BASE-T networking systems. The highly integrated TNETE2004 includes a user-programmable SNI signal for each PHY. Each PHY interface on the device provides Manchester encoding/decoding of data via unshielded twisted-pair (UTP) balanced cable through simple isolation transformers requiring no external filtering. Additional TNETE2004 features are smart squelch, jabber detection, auto-polarity correction, transmission wave shaping, and anti-alias filtering capabilities. Each PHY interface on the TNETE2004 is individually addressable within the TNETE2004 via the MDIO.