Method and apparatus for achieving fast phase settling in a phase locked
loop
    1.
    发明授权
    Method and apparatus for achieving fast phase settling in a phase locked loop 失效
    用于在锁相环中实现快速相位稳定的方法和装置

    公开(公告)号:US5754607A

    公开(公告)日:1998-05-19

    申请号:US439091

    申请日:1995-05-10

    摘要: A method and an apparatus are provided to achieve fast phase settling when a reference signal for a phase locked loop changes from a first frequency to a second frequency, such as during holdover recovery in a synchronous optical network. The present method acquires the second frequency with a phase locked loop (24). After the frequency is acquired, the integral register (39) of the phase locked loop (24) is loaded with the contents of the output frequency register (34) of the phase locked loop (24). The phase detector (28) of the phase locked loop (24) is then realigned to the reference signal.

    摘要翻译: 提供了一种方法和装置,用于当用于锁相环的参考信号从第一频率变为第二频率(例如在同步光网络中的保持恢复期间)期间实现快速相位稳定。 本方法利用锁相环获得第二频率(24)。 在获取频率之后,锁相环(24)的积分寄存器(39)加载锁相环(24)的输出频率寄存器(34)的内容。 然后将锁相环(24)的相位检测器(28)重新对准参考信号。