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APPAREILS ET PROCÉDÉS DE DÉTECTION D'UN COMPTAGE DE BOUCLES DANS UNE BOUCLE À VERROUILLAGE DE RETARD
APPAREILS ET PROCÉDÉS DE DÉTECTION D'UN COMPTAGE DE BOUCLES DANS UNE BOUCLE À VERROUILLAGE DE RETARD
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摘要
Apparatuses and methods are disclosed for detecting a loop count in a delay-locked loop that uses a divide clock in a measure initialization process. An example apparatus includes a divider configured to receive a signal and produce a first divided signal and a second divided signal that is complementary to the first divided signal, a first circuit configured to count the first divided signal during a first enabled period and produce a first count value, a second circuit configured to count the second divided signal during a second enabled period and produce a second count value, and an adder configured to produce a third count value responsive to the first and second count values.
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