Programmable fractional-N clock generators

Details Programmable fractional-N clock generators Programmable fractional-N clock generators

2007-07-10

2007-07-10

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S291000

Reexamination Certificate

active

11232949

ABSTRACT:
Clock generators capable of generating clocks with different frequency according to a binary code. A voltage controlled oscillation module generates a plurality of first clocks (D0˜Dm) with a first frequency (f0), in which the first clocks Diand Di-1have a fixed phase difference and 1<i<m. A logic control circuit outputs a set of corresponding clocks arranged in a corresponding sequence according to the first clocks and a binary code. A clock synthesizer generates a second clock with a second frequency (f1) according to the set of corresponding clocks, in which f1=A/B f0,A<B and A and B are positive integers.

REFERENCES:
patent: 6114915 (2000-09-01), Huang et al.
patent: 7098707 (2006-08-01), Starr et al.

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