Delay lock loop delay adjusting method and apparatus
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United States of America Patent
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Apr 27, 2010
Grant Date -
Mar 13, 2008
app pub date -
Sep 10, 2007
filing date -
Jun 30, 2006
priority date (Note) -
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Abstract
Systems and methods for synchronizing communication between devices include using a test circuit to measure a propagation time through a delay circuit. The propagation time is used to determine an initial delay value within a delay lock loop. This delay value is then changed until a preferred delay value, resulting in synchronization, is found. In various embodiments, used of the initial delay value increases the speed, reliability or other beneficial features of the synchronization.
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