Clock control apparatus

Details Clock control apparatus Clock control apparatus

1993-09-09

1995-02-14

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Particular output circuit

377 78, 327291, 327292, 327113, 327392, H03K 2108

Patent

active

053902246

ABSTRACT:
A clock control apparatus having a basic period clock and a plurality of clocks with different phases from the basic period clock by t/N period, is used with an information processing unit. The apparatus comprising a clock signal generating portion for generating pulses of the basic period clock, a cycle counter for counting the number of pulses of the basic period clock received from the clock signal generating portion when a start command is received and for outputting a cycle counter clock stop signal when the number of pulses becomes a predetermined count value, a control portion for outputting a basic enable period signal for controlling the basic period clock and a delay enable period signal for controlling the t/N period clocks by a flag and the cycle counter clock stop signal, the flag being assignable before the start command is received, a basic period clock enabling portion for receiving pulses of the basic period clock and for outputting the pulses of the basic period clock for a period designated by the basic enable period signal, and a t/N delay period clock enabling portion for generating pulses of the t/N period clocks and for outputting the pulses for a period designated by the delay enable period signal.

REFERENCES:
patent: 4302818 (1981-11-01), Niemann
patent: 4378589 (1983-03-01), Finnegan et al.
patent: 4507732 (1985-03-01), Catiller et al.
patent: 4849702 (1989-07-01), West et al.
patent: 4922414 (1990-05-01), Holloway et al.
patent: 5146585 (1992-09-01), Smith, III

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