schaltungsanordung to synchronize an asynchronous digital signal to a systemstakt.

摘要

A synchronous output pulse of defined length is to be provided for an asynchronous digital signal of arbitrary length, maintaining high noise immunity with respect to metastable states. The asynchronous digital signal (IN) controls an alerting flip-flop (KO) which is connected to two series-connected synchronising flip-flops (K1, K2) which are controlled by clocks (CK1, CK2) which are phase-shifted with respect to one another in such a manner that a noise-free synchronous output pulse (OUT) of defined length is emitted within a predetermined time window. A special field of application is the synchronous transfer of asynchronously occurring data signals in processing units. IMAGE