Method and apparatus for clock recovery
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United States of America Patent
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Mar 30, 2010
Grant Date -
Aug 31, 2006
app pub date -
Dec 20, 2005
filing date -
Dec 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A clock recovery system includes a rough clock generator, which yields a rough clock signal, based upon logic level transitions exhibited by a data signal. The rough clock signal is supplied to a phase locked loop having an adjustable order of frequency response, an adjustable corner frequency, an adjustable natural frequency, and/or an adjustable damping factor. The clock recovery system includes control parameters that, when properly adjusted, suppress non-ideal effects of components within the clock recovery system, and also permit the frequency response of the phase locked loop to be returned to a desired response.
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