10 100ETHERNET-T22ULP18 is a single-port DSP-based Fast Ethernet Transceiver. It contains all the active circuitry required to convert data stream to and from a Media Access Control (MAC) and from and to the physical media. It supports 100Base-TX and 10BASE-T networks over twisted-pair cable in full-duplex or half-duplex mode. Both the Media Independent Interface(MII) and Reduced Media Independent Interface (RMII) are supported.