The DP83861 is a full featured Physical Layer transceiver s 100BASE-TX and 1000BASE-T compliant with integrated PMD sublayers to support 10BASE-T, s Fully compliant to IEEE 802.3u 100BASE-TX and IEEE 100BASE-TX and 1000BASE-T Ethernet protocols. 802.3z/ab 1000BASE-T specifications. Fully integrated and fully compliant ANSI X3.T12 PMD physical sublayer The DP83861 uses state of the art 0.18 m , 1.8 V/3.3 V that includes adaptive equalization and Baseline WanCMOS technology, fabricated at National Semiconductor's der compensation