| 摘要 |
A first circuit and a second circuit. The first circuit may be configured to generate a first intermediate signal, a second intermediate signal, and a third intermediate signal in response to a first control signal, a second control signal, a third control signal, a reference signal and an output clock signal. The second circuit may be configured to generate an output signal in response to the first intermediate signal, the second intermediate signal, and the third intermediate signal. The output signal may indicate a lock condition between a feedback signal and the reference signal.
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