An apparatus for communicating data. In one embodiment, the apparatus comprises a differential serial interface that supports a plurality of differential serial interface standards and a rail-to-rail common mode range, the differential serial interface comprising a
silicon integration of a
transceiver comprising (i) a
transmitter module coupled to a differential interface and (ii) a
receiver module coupled to the differential interface via a common mode isolation circuit, wherein the
transceiver is direction-selectable; a variable termination resistance circuit, coupled to the differential interface, for providing adjustable termination for the
transmitter module and the
receiver module; a frequency-based load
detector for detecting connection to a remote
receiver; and a calibration circuit for calibrating termination impedance,
voltage swing, at least one of pre-emphasis levels or de-emphasis levels, at least one of
transmitter eye or receiver eye, and
return loss of the differential serial interface to support the plurality of differential serial interface standards.