Patent ID: 6070248
Filing Date: 2000-05-30
Classification: G06F

Abstract:
A clock signal generator that generates a reference clock signal having a reference frequency for an electronic device from a base clock signal having a base frequency, the clock signal generator comprising:a first input, coupled to one of a variety of a base signal source that is external to the electronic device, for accepting the base clock signal from the base signal source, wherein said base frequency of said base clock signal is variable depending on said one of said variety of said base signal source to which said first input is coupled;a second input, coupled to a storage device that is external to the electronic device, for accepting the value of the base frequency from the storage device, said storage device corresponding to said one of said variety of said base signal source to which said first input is coupled;a plurality of frequency dividers, each frequency divider coupled to the first input for dividing the base frequency of the base clock signal by a respective factor to generate a respective divided clock signal having a respective frequency; anda multiplexer, coupled to the second input and to the plurality of frequency dividers, to select as the reference clock signal a divided clock signal having a respective frequency that is closest to the reference frequency from the plurality of divided clock signals.