Patent ID: 8624625

Claim:
A termination circuit for a HDMI (High Definition Multimedia Interface) transmitter, comprising: a first common node connected to a positive transmission pin of a differential pair of the HDMI transmitter; a second common node connected to a negative transmission pin of the differential pair of the HDMI transmitter; a termination resistor unit including a first connection transistor formed on a semiconductor well region biased by a bias voltage, and a first termination resistor and a second termination resistor; and a bias unit including a first transistor connected to the first common node and a second transistor connected to the second common node, and configured to generate the bias voltage based on a first voltage received through the first common node and a second voltage received through the second common node, wherein the termination resistor unit connected to the first common node and the second common node; and wherein the first connection transistor configured to conditionally connect the first termination resistor and the second termination resistor in response to a termination resistor control signal.