Clock recovery apparatus
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United States of America Patent
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-
Dec 4, 1990
Grant Date -
N/A
app pub date -
Sep 11, 1989
filing date -
Sep 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital phase acquisition circuit includes logic for detecting an edge of incoming data and a plurality of candidate clock phases, the circuitry further including logic for determining when the data undergoes a phase transition and at least one candidate phase which undergoes a digitally equivalent transition close in time to the data transition so as to enable the candidate phase to be used for a clock for recovering information representative of the data. The circuit allows clock to be recovered within 1 bit time of a predetermined data transition occurring, thus allowing preambles of 1 bit to be utilized in data packets.
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