The HDMI Tx PHY is the physical layer of a single-link HDMI transmitter interface. The HDMI Tx PHY comprises three-line drivers for data transmission and an additional line driver for clock transmission. The HDMI Tx PHY is designed to perform the serialization and transmission of video data and control information through an HDMI interface. The HDMI Tx PHY interfaces with an HDMI Tx link controller through a common graphic controller interface supporting 30-,60- or 120-bit data transfers. A clock line driver is used for reference clock transmission.