Spread-spectrum clock generator using processing in the...

Details Spread-spectrum clock generator using processing in the... Spread-spectrum clock generator using processing in the...

2006-03-21

2006-03-21

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S159000, C375S134000, C375S363000

Reexamination Certificate

active

07015733

ABSTRACT:
A spread-spectrum phase-locked loop clock generator includes a PLL circuit, a modulation generator, a bit stream processor and a multiplexer. The modulation generator outputs a bitstream in response to an input signal and a control signal. The bitstream processor generates bitstream signals. The multiplexer outputs one of the bitstream signals in response to a frequency deviation control signal. The PLL circuit is controlled by the output of the multiplexer.

REFERENCES:
patent: 4179670 (1979-12-01), Kingsbury
patent: 5311542 (1994-05-01), Eder
patent: 5631920 (1997-05-01), Hardin
patent: 5872807 (1999-02-01), Booth et al.
patent: 6366174 (2002-04-01), Berry et al.

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