Phase-locked detection device, phase-locked detection method and phase-locked loop
A detection device and a phase-locked technology, applied in the field of phase-locked loops, can solve the problems of unreliable results, inability to detect short pulses, and inability to identify short-term loss of lock.
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[0095] This embodiment provides a phase-locked detection method, comprising the following steps:
[0096] Obtain the reference clock of the phase-locked loop and the frequency-divided signal of the feedback clock;
[0097] Performing multi-bit logic operations on the two-frequency signal to obtain a reference pulse and a feedback pulse;
[0098] Take the feedback pulse as the trigger condition to collect the reference pulse and obtain the phase-locking enable signal;
[0099] The phase lock enable signal is executed with a counter, and a lock result is output.
[0100] A period reset signal is obtained by performing multi-bit logic operations on the frequency-divided signal, and the feedback pulse is controlled by the period reset signal.
[0101] In addition, it should be noted that in Example 1, about Figure 2-5The descriptions of the first AND gate, the second AND gate, the first logic signal, the second logic signal, etc., do not represent the same components in actual...
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