Extender and method of recovering differential signal

摘要

An extender includes a transmitter and a receiver for transmitting a first and a second differential data signals and a differential clock signal. The transmitter combines a positive clock signal of a differential clock signal with a first differential data signal and combines a negative clock signal of the differential clock signal with a second differential data signal, thereby respectively forming a first and a second composite differential signals. The receiver includes a first impedance unit extracting the positive clock signal from the first composite differential signal, a second impedance unit extracting the negative clock signal from the second composite differential signal, and a recovery unit receiving the positive and negative clock signals and forming the differential clock signal. The frequency of the extracted first and second differential data signals are ten times or more of the frequency of the differential clock signal.

主权项

1. An extender, for transmitting a plurality of differential signals to a remote end, wherein the plurality of differential signals comprises a first differential data signal, a second differential data signal, and a differential clock signal, the extender comprising:
a transmitter, for combining a positive clock signal of the differential clock signal with the first differential data signal and combining a negative clock signal of the differential clock signal with the second differential data signal to form a first composite differential signal and a second composite differential signal respectively; and a receiver, for extracting the first differential data signal and the second differential data signal from the first composite differential signal and the second composite differential signal, the receiver comprising:
a first impedance unit, for extracting the positive clock signal from the first composite differential signal;a second impedance unit, for extracting the negative clock signal from the second composite differential signal; anda recovery unit, coupled to the first impedance unit and the second impedance unit, for receiving the positive clock signal and the negative clock signal and forming the differential clock signal based on the positive clock signal and the negative clock signal;wherein frequencies of the extracted first differential data signal and the extracted second differential data signal are ten times or more of a frequency of the differential clock signal.