Clock selection control circuit
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United States of America Patent
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-
Dec 25, 1984
Grant Date -
N/A
app pub date -
Sep 30, 1982
filing date -
Sep 30, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit which controls the selection and activation of one of a plurality of clock circuits arranged in copies. Selection circuitry is used to detect failure of an on-line clock circuit, scan a plurality of available clock circuits in a predetermined sequence and place the next available properly operating clock circuit on line. Control circuitry prevents erroneous clock selection during power-up/power down operations and enables predetermined clock circuit copies to be disabled.
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