Modified bang-bang phase detector with ternary output

Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements

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331 25, 327 12, 375375, 375376, H03L 7085

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054555400

ABSTRACT:
A phase detector is described. The phase detector receives a data signal from an external circuit. The phase detector generates a first signal when a transition edge of the dock signal occurs after a transition edge of the data signal. The phase detector generates a second signal when the transition edge of the dock signal occurs before the transition edge of the data signal and generates a third signal when the data signal remains in a same signal state for at least two transition edges of a same type of the dock signal.

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