Retiming circuit for pulse signals, particularly for microprocessor peripherals
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United States of America Patent
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-
Mar 7, 1989
Grant Date -
N/A
app pub date -
Dec 18, 1986
filing date -
Dec 18, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital retiming circuit for synchronizing a pulse signal with a local clock aligns incoming pulse signals with the local clock using a fully digital technique. The incoming signal is stored in a storage circuit which is disabled until the pulse signal has gone low before rising again. The output of the storage circuit is used to trigger a flip-flop, whose output is converted into a signal aligned with the local clock by means of a cascade of inverters and transfer gates enabled by the local clock. A trigger circuit resets the flip-flop in step with the clock whenever the incoming pulse signal is low.
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