Asynchronous clock selection circuit based on cross-clock domain and switching method thereof
A clock circuit, asynchronous clock technology, applied in the direction of logic circuit connection/interface layout, etc., can solve the problems of increasing stability, improving circuit processing clock, etc., to increase stability, increase clock efficiency, and avoid glitch problems. Effect
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[0042] The present invention will be described in detail below according to the accompanying drawings.
[0043] A method for realizing an asynchronous clock selection switching circuit across clock domains, according to the requirements of the clock selection signal, selects the control circuit of the working clock of the microprocessor system, including the following steps:
[0044] The clock selection signal clock is synchronized, and the clock selection signal asynchronous with the target clock is converted into a target signal clock selection signal synchronous with the target clock;
[0045] Judging and outputting the current clock stop signal according to the clock selection signal;
[0046] The current clock stop signal clock is synchronized, and the current clock stop signal that is asynchronous with the target clock is converted into a current clock stop signal that is synchronous with the target clock;
[0047] The control signal (selection signal and stop signal) a...
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