Clock generation apparatus and method for CMOS microprocessors u

Details Clock generation apparatus and method for CMOS microprocessors u Clock generation apparatus and method for CMOS microprocessors u

1996-10-31

1999-02-09

Butler, Dennis M.

G06F 104

Patent

active

058705929

ABSTRACT:
A clock generation apparatus and method for generating clock signals for a microprocessor integrated circuit. The clock generation apparatus includes a device which generates a reference frequency, an acoustic wave oscillator having an oscillation frequency slightly faster than the reference frequency and a circuit configuration coupled to the acoustic wave oscillator which generates frequency bearing signals in response to an output of the acoustic wave oscillator. The frequency bearing signals carry negligible jitter. The circuit configuration includes a quadrature rotator for controlling clock phase, a clock distributor for efficiently dispersing clock signals to the microprocessor integrated circuit, a bus divider which provides a feedback clock signal phase aligned with the reference frequency, a phase detector for detecting the phase difference of a bus clock signal and the feedback clock signal, and a digital filter responsive to the phase detector.

REFERENCES:
patent: 4489289 (1984-12-01), Slobodnik et al.
patent: 4715049 (1987-12-01), Andrews et al.
patent: 4801818 (1989-01-01), Schroedinger
patent: 4893271 (1990-01-01), Davis et al.
patent: 4903228 (1990-02-01), Gregoire et al.
patent: 5056054 (1991-10-01), Wong et al.
patent: 5077529 (1991-12-01), Ghoshal et al.
patent: 5150078 (1992-09-01), Yang et al.
patent: 5166952 (1992-11-01), Omurg et al.
patent: 5179574 (1993-01-01), Watanabe et al.
patent: 5253268 (1993-10-01), Omura et al.
patent: 5317284 (1994-05-01), Yang
patent: 5349310 (1994-09-01), Rieder et al.
patent: 5396523 (1995-03-01), Hedberg
patent: 5526380 (1996-06-01), Izzard
Digital Technical Journal, "Circuit Implementation of a 300-MHz 64-bit Second-generation CMOS Alpha CPU", vol. 7, No.1, 1995, pp. 100-115.

Affiliated with

Also associated with

Rating

Clock generation apparatus and method for CMOS microprocessors u does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Clock generation apparatus and method for CMOS microprocessors u, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clock generation apparatus and method for CMOS microprocessors u will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1958448