| 摘要 |
A system and a method for performing dynamic trimming are provided to implement low power operation by operating a low power dynamic trimming circuit with a frequency randomly decreased from a frequency of a data clock signal of a DDR memory. A system for performing dynamic trimming includes a clock(210), a counter(220), a phase length detector(230) and a conversion module(240). The clock generates a reference clock signal, and the reference clock signal includes a first frequency, a factor of a second frequency of the signal. The counter is connected to the clock, and generates a plurality of clock pulses on the basis of pulses of the reference clock signal. The plurality of clock pulses is generated to have a slower frequency from the first frequency. The phase length detector is connected to the counter, and includes a trimmer chain detecting at least one average length of the plurality of clock pulses. The conversion module is connected to the phase length detector, and converts the length into phase delay applied to the signal.
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