Patent ID: 6737904
Filing Date: 2004-05-18
Classification: G06F,H04B

Abstract:
A method of producing a clock signal with reduced electromagnetic interference spectral components, the method comprising:providing a first clock signal; producing a second clock signal by delaying the first clock signal; and generating a jittered clock signal by switching between the first clock signal and the second clock signal at times selected responsive to a random number generator; and producing multiple additional clock signals, different from the first and second clock signals, and wherein generating a jittered clock signal comprises generating a jittered clock signal by switching between the first clock signal, the second clock signal, and the additional clock signals, to select any one of the time signals, at times selected responsive to the random number generator; and providing a multiplexer having binary select inputs, wherein switching between the first clock signal, the second clock signal, and the additional clock signals is performed by the multiplexer, the random number generator being coupled to one of binary select inputs and an additional random number generator being coupled to another of the binary select inputs.