Enhanced phase discriminator for fast phase alignment
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United States of America Patent
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Dec 17, 2013
Grant Date -
Jan 3, 2013
app pub date -
Jun 30, 2011
filing date -
Jun 30, 2011
priority date (Note) -
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Abstract
One embodiment of the present invention relates to a phase alignment system including a plurality of samplers, a clock distributor, a phase detector and a phase alignment control. The samplers are configured to receive an incoming signal and a phase adjusted clock signal and to provide samples according to the incoming signal. The clock distributor receives a clock adjustment signal and generates the phase adjusted clock signal, which triggers sampling of the incoming signal. The clock adjustment signal indicates a direction of phase adjustment and can include an amount of phase adjustment. The phase detector receives the samples and provides extended phase alignment commands derived from the samples. The phase alignment control receives the extended phase alignment commands and provides the clock adjustment signal to the clock distributor.
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