DEVICE USED FOR THE SYNCHRONIZATION OF CLOCK SIGNALS, AND CLOCK SIGNAL SYNCHRONIZATION METHOD

摘要

The invention relates to a clock signal synchronization method, and to a device (1) used for the synchronization of clock signals (CLK), comprising a delay device (2) having a variably controllable delay time (tvar), in which a clock signal (CLK) or a signal obtained therefrom is input, subjected to action of the variably controllable delay time (tvar), and output in the form of a delayed clock signal (DQS). The invention is characterized in that a device (5) is provided for determining whether a clock edge (A') of the delayed clock signal (DQS), which is output by the delay device (2), or of a signal (FB) obtained therefrom is located within a predetermined window of time before a corresponding clock edge (A) of the clock signal (CLK) or of the signal obtained therefrom.