Patent ID: 7995660

Claim:
A method, comprising: measuring, at a receiver of a high-speed direct current (DC) serial connection, a common-mode voltage of a transmitter transmitting over the high-speed DC serial connection, wherein the common-mode voltage of the transmitter is an average of a voltage signal transmitted by the transmitter and received by the receiver; comparing the common-mode voltage of the transmitter with a common-mode termination voltage of the receiver; determining a feedback signal based on a difference between the common-mode voltage of the transmitter and the common-mode termination voltage of the receiver; and using the feedback signal to maintain the common-mode termination voltage of the receiver within a preset voltage range at which the common-mode voltage of the receiver substantially matches the common-mode voltage of the transmitter, wherein the preset range is the average of the voltage signal transmitted by the transmitter and received by the receiver plus/minus a tolerance.