Delay lock loop delay adjusting method and apparatus

Details Delay lock loop delay adjusting method and apparatus Delay lock loop delay adjusting method and apparatus

2011-08-02

2011-08-02

Tsai, Carol S (Department: 2857)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Signal frequency or phase correction

C327S158000, C327S276000, C365S200000, C365S201000, C365S194000, C365S189120, C375S371000, C375S376000

Reexamination Certificate

active

07991572

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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