Phase-alignment between clock signals
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United States of America Patent
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May 10, 2016
Grant Date -
May 14, 2015
app pub date -
Nov 6, 2014
filing date -
Nov 8, 2013
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Abstract
There is proposed a method and system for determining a phase-alignment between first and second clock signals of differing frequency. The method comprise: sampling a value of the first clock signal at instants defined by an edge of the second clock signal; defining a sequence of the sampled values of the first clock signal, wherein consecutive sample values in the sequence are separated by N cycles of the second clock signal, and wherein N is an integer greater than 1; and detecting the occurrence of a predetermined pattern of values in the defined sequence.
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