Drift-tolerant sync pulse circuit in a sync pulse generator

Details Drift-tolerant sync pulse circuit in a sync pulse generator Drift-tolerant sync pulse circuit in a sync pulse generator

2004-07-23

2008-03-04

Perveen, Rehana (Department: 2116)

Electrical computers and digital processing systems: support

Synchronization of clock or timing signals, data, or pulses

C713S500000, C713S503000, C713S600000, C713S601000, C700S090000, C375S354000, C375S356000, C345S182000, C326S093000

Reexamination Certificate

active

07340631

ABSTRACT:
A drift-tolerant sync generation circuit and sync generation method for a sync pulse generator operable in a clock synchronizer that effectuates data transfer between first circuitry disposed in a first clock domain and second circuitry disposed in a second clock domain. The first clock domain is operable with a first clock signal and the second clock domain is operable with a second clock signal. A sync circuit portion, responsive to a valid edge signal indicative of coincident edges between the first and second clock signals, is operable to generate based upon the ratio a start sync signal substantially centered around the coincident edges. A first sync generator, responsive to the start sync signal, is operable to generate synchronization pulses in the first clock domain. A second sync generator, responsive to the start sync signal, is operable to generate synchronization pulses in the second clock domain.

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