Spread spectrum clock generator

Details Spread spectrum clock generator Spread spectrum clock generator

2007-06-05

2008-11-04

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S147000, C327S151000, C327S152000, C327S160000, C327S163000, C375S375000, C375S376000

Reexamination Certificate

active

07446578

ABSTRACT:
A spread spectrum clock generator is disclosed. The spread spectrum clock generator (SSCG) bases on the structure of the phase-lock loop. The SSCG uses the voltage control oscillator with multi-phase output function for outputting clock signals of different phases. The clock signals of different phases are selectively fed back to the phase frequency detector. In this way, the frequency of the output signal is changed, which achieves spreading spectrum.

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Circuits for High Speed Links and Clock Generators, A Low-Jitter 5000 PPM Spread Spectrum Clock Generator for Multi-Channel SATA Transceiver in 0.18 UM COMS, Feb. 8, 2005, p. 590, ISSCC2005 Session 8, ISSCC.

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