PHASE- OR FREQUENCY-LOCKED LOOP CIRCUIT HAVING A GLITCH DETECTOR FOR DETECTING TRIGGERING-EDGE-TYPE GLITCHES IN A NOISY SIGNAL
    1.
    发明申请
    PHASE- OR FREQUENCY-LOCKED LOOP CIRCUIT HAVING A GLITCH DETECTOR FOR DETECTING TRIGGERING-EDGE-TYPE GLITCHES IN A NOISY SIGNAL 失效
    具有用于在噪声信号中检测触发式边缘玻璃的玻璃检测器的相位或频率锁定环路

    公开(公告)号:US20070120584A1

    公开(公告)日:2007-05-31

    申请号:US11164637

    申请日:2005-11-30

    IPC分类号: H03L7/06

    CPC分类号: H03L7/199 H03L7/0891

    摘要: A phase- or frequency-locked loop circuit (200) that generates an accurate output signal (ACC_SYN_OUT) even in the presence of edge-triggering-type glitches (148, 304A, 304B) in the input reference clock signal (REF_CLK). The locked-loop circuit includes a phase or frequency difference detector (216) and a glitch detector (208) that generates a trigger signal (GLITCH_DETECTED) upon detection of at least one glitch. The trigger signal resets the difference detector so as to abort the updating of the output signal that the glitch would otherwise cause.

    摘要翻译: 即使在存在输入参考时钟信号(REF_CLK)中的边缘触发型毛刺(148,304A,304B))的情况下也产生精确输出信号(ACC_SYN_OUT)的相位锁相环或者锁相环电路(200) 。 锁定环电路包括相位或频率差检测器(216)和毛刺检测器(208),其在检测到至少一个毛刺时产生触发信号(GLITCH_DETECTED)。 触发信号复位差分检测器,以便中止毛刺将导致的输出信号的更新。