Channel skew calibration method and associated receiver and system

A system, comprising:

• a transmitter, comprising:
• a plurality of adjustable delay circuits, for delaying a plurality of transmitting signals to generate a plurality of delayed transmitting signals;
• and
• a plurality of channels, coupled to the transmitter;
• and
• a receiver, comprising:
• a plurality of receiving circuits, for receiving the delayed transmitting signals from the channels, wherein each of the receiving circuits receives at least one of the delayed transmitting signals to generate an output signal;
• and
• a skew detection and alignment circuit, coupled to the plurality of receiving circuits, for determining skew information according to at least one of the delayed transmitting signals and the output signals;
• and
• a side-band controller, coupled to the skew detection and alignment circuit, for transmitting the skew information to the transmitter to control the adjustable delay circuits.