Digital phase lock clock generator without local oscillator
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United States of America Patent
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-
Dec 22, 1992
Issued Date -
N/A
app pub date -
Aug 10, 1989
filing date -
Jun 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digital phase lock loop that does not depend on a voltage controlled oscillator (VCO) for phase locking. A phase detector (PD), terminated with a latch, controls an up/down counter that programs an increase/decrease of delay on the delay line. The tapped output of the delay line goes through a two phase generator which in turn feeds back to the PD for comparison with the reference clock. This process is repeated until phase locking is obtained.
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