| 摘要 |
A system and method for performing dynamic trimming. Specifically, the system comprises a clock for generating a reference clock signal. The reference clock signal comprises a first frequency that is a factor of a second frequency of a signal (e.g., data clock signal from DDR memory). A counter is coupled to the clock and generates a plurality of clock pulses based on pulses of the reference clock signal. The plurality of clock pulses is generated at a slower frequency from the first frequency for low power operation. A phase length detector is coupled to the counter and comprises a trimmer chain for detecting an average length of at least one of the generated plurality of clock pulses. A transformation module is coupled to the phase length detector for transforming the average length to a phase delay of the signal.
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