Patent ID: 8755529

Claim:
A communication device, comprising: a transmitter, comprising a first scrambler with a plurality of first registers, for transmitting to a transmission line a first data scrambled by the first scrambler according to an oscillating signal generated by an oscillation circuit; a receiver, for receiving from the transmission line a second data scrambled by a second scrambler, comprising a descrambler with a plurality of second registers for descrambling the second data; and a controller, coupled to the transmitter and the receiver, for configuring the oscillation circuit to adjust the frequency of the oscillating signal according to at least one of the first data and the values of the first registers, and at least one of the second data and the values of the second registers; wherein the first scrambler and the second scrambler have the same scrambler generator polynomial, the controller compares at least one of the first data and the values of the first registers with at least one of the second data and the values of the second registers for generating a combination number difference, and the controller configures the oscillation circuit to adjust the frequency of the oscillating signal when the combination number difference is not zero.