| 摘要 |
A method for processing a signal transitioning from a high state to a low state is described, comprising the steps of detecting a transition of the signal from a high state to a low state, setting a timer for a predetermined interval, sampling, while the timer is running, the signal to determine whether the signal remains in a low state, determining, by reading the timer, whether the predetermined interval has elapsed, repeating the sampling and determining steps until the predetermined interval has elapsed; and concluding, if the signal remains in a low state for each instance of said sampling step, that the transition is valid.
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