Systems and methods for clock mode determination utilizing...

Details Systems and methods for clock mode determination utilizing... Systems and methods for clock mode determination utilizing...

2008-05-27

2008-05-27

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Signal frequency or phase correction

C341S122000, C341S123000

Reexamination Certificate

active

07379834

ABSTRACT:
A system for determining a data converter operating mode includes measurement circuitry operable to measure a master clock frequency of a master clock signal, the master clock frequency measurement biased by a past operating mode selection, and operable to measure a frequency ratio between a frequency of a data clock signal and the master clock frequency. A mapping system maps the measurements of the master clock frequency and the frequency ratio to an operating mode of the data converter. In an additional embodiment, the measurement circuitry biases the master clock frequency measurement based on a past master clock frequency measurement.

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patent: 6492928 (2002-12-01), Rhode et al.
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patent: 6667704 (2003-12-01), Grale et al.
patent: 6931513 (2005-08-01), Swanson
patent: 7095795 (2006-08-01), Agehari

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