Frequency acquisition rate control in phase lock loop circuits
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United States of America Patent
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Mar 9, 2004
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N/A
app pub date -
Sep 17, 1999
filing date -
Sep 17, 1999
priority date (Note) -
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Abstract
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate (i) a first reference signal in response to a pump-up signal and (ii) a second reference signal in response to a pump-down signal. The second circuit may be configured to generate (a) a first control signal in response to (i) the pump-up signal and (ii) the second reference signal and (b) a second control signal in response to (i) the pump-down signal and (ii) the first reference signal.
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