Two-stage synchronizer

Details Two-stage synchronizer Two-stage synchronizer

H - Electricity

03

K

328/87

H03K 5/135 (2006.01) H04L 7/02 (2006.01)

Patent

CA 1310711

TWO-STAGE SYNCHRONIZER ABSTRACT OF THE DISCLOSURE A method, and apparatus to implement that method, for synchronizing an incoming signal to the transitions of a digital clock signal in the form of a periodic pulse train. The apparatus includes a first circuit pair of flip-flops arranged to sample and store the state of the input signal on either the positive and negative transitions of the periodic pulse train, an OR gate producing a signal indicative of the stored content of the first circuit, and a third circuit that samples and stores the first signal at each transition of the periodic pulse train to produce therefrom a rep- resentation of the input signal synchronized to one of the transitions of the pulse train.

583341

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