相位比较器比较基准时钟和输出时钟的相位，并输出相位比较信号。
A phase comparator compares the phase of the reference clock with that of the output clock and outputs a phase comparison signal.
相位比较器比较基准时钟和输出时钟的相位，并输出相位比较信号。
A phase comparator compares the phase of the reference clock with that of the output clock and outputs a phase comparison signal.
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