PROCEDE DE DETECTION DU VERROUILLAGE D'UNE BOUCLE A VERROUILLAGE DE PHASE ET DISPOSITIF ASSOCIE

Procédé de détection du verrouillage d'une boucle à verrouillage de phase 1. Dans ce procédé, on ouvre une fenêtre temporelle Fenêtre pendant laquelle on observe l'arrivée des fronts utiles des signaux d'entrée du comparateur de phase 3 d'une boucle à verrouillage de phase 1. A method is for detecting locking of a phase-locked loop that generates an output signal and includes a phase comparator receiving, as an input, a reference signal and a second signal based upon the output signal. A time window having a duration of at least two periods of a third signal based upon the output signal, and located about a payload edge of the second signal, is generated. A first comparison of the reference signal and the second signal at a first payload edge of the third signal within the time window and on a first side of the payload edge of the second signal is performed. A second comparison of the reference signal and the second signal at a second payload edge of the third signal within the time window and on a second side of the payload edge of the second signal is then performed. Locking of the phase-locked loop based upon the reference signal and the second signal being equal during the first and second comparisons is detected.