Patent ID: 8225017
Filing Date: 2012-07-17
Classification: G01R,H03M,H04L

Abstract:
1. A method comprising: converting a plurality of parallel data streams to a serial data stream; applying the serial data stream to a pre-driver, wherein the pre-driver is powered by a voltage output of a regulated power supply, and wherein an output of the pre-driver is coupled to an input of a driver; and periodically returning the voltage output of the regulated power supply to a predetermined level to reduce data dependent jitter in a serializer/deserializer device of a transmitter, wherein the data dependent jitter is introduced by the regulated power supply, wherein a frequency at which the voltage output is returned to the predetermined level is proportional to a data rate of the serial data stream; wherein: the returning of the voltage output to the predetermined level comprises introducing a transition in a data stream complementary to the serial data stream to transition the regulated power supply between a first state and second state when there is no transition in states between two consecutive bits in the serial data stream; the serial data stream has a first data rate; the data stream complementary to the serial data stream has a second data rate; and the second date rate is equal to the first data rate.