Patent ID: 8897318

Claim:
A network device, comprising: a first transceiver unit, arranged for processing a data corresponding to a first physical (PHY) layer via a first interface, comprising: a digital-to-analog converter (DAC), arranged for converting a first logic level of a transmission signal transmitted by the first transceiver unit into a first voltage potential and converting a second logic level of the transmission signal into a second voltage potential with reference to a control signal; and an analog-to-digital converter (ADC), arranged for converting the first voltage potential of a receiving signal received by the first transceiver unit into the first logic level and converting the second voltage potential of the receiving signal into the second logic level with reference to the control signal; wherein a voltage difference between the first voltage potential and the second voltage potential is equal to a first voltage amplitude supported by the first interface; a second transceiver unit, arranged for processing a data corresponding to a second PHY layer via a second interface; and a control unit, arranged for processing a data corresponding to a media access control (MAC) layer, wherein the control unit connects with at least one of the first transceiver unit and the second transceiver unit with reference to a connection scheme.