Patent ID: 8199797

Claim:
A transceiving apparatus, comprising: a transmitter module, comprising: a transmitting circuit, for generating a first differential input signal pair when the transceiving apparatus operates in a transmitter mode (TX mode); and an auxiliary circuit, coupled to the transmitting circuit, for generating a differential output signal pair according to the first differential input signal pair when the transceiving apparatus operates in the TX mode, comprising: a differential circuit, having a positive input terminal, a negative input terminal, a positive output terminal and a negative output terminal; and a control circuit, for coupling the first differential input signal pair to the positive input terminal and the negative input terminal when the transceiving apparatus operates in the TX mode, and for coupling the positive input terminal and the negative input terminal to a first reference voltage and a second reference voltage, respectively, and coupling the common mode voltage generated at the positive output terminal and the negative output terminal to the receiver module when the transceiving apparatus operates in the RX mode; and a receiver module, coupled to the auxiliary circuit, for receiving a second differential input signal pair according to a common mode voltage when the transceiving apparatus operates in a receiver mode (RX mode); wherein the auxiliary circuit generates the common mode voltage when the transceiving apparatus operates in the RX mode.