System and method for compensating for delays of a signal in...

H - Electricity – 04 – L

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H04L 7/04 (2006.01) G06F 1/04 (2006.01) G06F 1/10 (2006.01)

Patent

CA 2249250

A system and method for increasing electrical or physical distances between components in a synchronous system controlled by a master clock signal. A multi- stage pipeline compensates for delays in transmission of signals within the system. A first stage in the pipeline generates a delay signal related to the transmission delays and it uses the delay signal for controlling receipt of the signal. In particular, it delays an internal clock signal by an amount related to the delay. Subsequent stages adjust the internal clock signal with respect to the master clock signal and the delay signal to compensate for the transmission delays. The system and method use programmable delay blocks in the pipeline to compensate for varying amounts of delay. In operation, a processor accesses a software table containing the required delay signals to adjust the internal clock, and it writes the corresponding signals to the stages of the pipeline to compensate for varying amounts of delay.

Système et méthode conçus pour augmenter les distances électriques ou physiques entre les éléments d'un système synchrone contrôlé par le signal d'une horloge pilote. Un pipeline à plusieurs étages compense les délais de transmission des signaux à l'intérieur du système. Un premier étage du pipeline produit un signal de délai lié aux délais de transmission et utilise ce signal de délai pour commander la réception du signal. Il retarde en particulier un signal d'horloge interne d'une durée basée sur le délai. Des étages suivants ajustent le signal d'horloge interne par rapport au signal de l'horloge pilote et au signal de délai pour compenser les délais de transmission. Le système et la méthode font appel à des blocs de délais programmables dans le pipeline pour compenser les durées variables des délais. Au cours de cette opération, un processeur accède à une table logicielle contenant les signaux de délais nécessaires à l'ajustement de l'horloge interne et applique les signaux correspondant aux étages du pipeline pour compenser les durées variables des délais.

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