Phase-locked loop monitor circuit

    公开(公告)号:US11411571B2

    公开(公告)日:2022-08-09

    申请号:US17330818

    申请日:2021-05-26

    摘要: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.

    Phase-locked loop monitor circuit

    公开(公告)号:US10256828B2

    公开(公告)日:2019-04-09

    申请号:US15711201

    申请日:2017-09-21

    摘要: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.

    Phase-locked loop monitor circuit

    公开(公告)号:US10680627B2

    公开(公告)日:2020-06-09

    申请号:US16372706

    申请日:2019-04-02

    摘要: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.

    Phase-locked loop monitor circuit

    公开(公告)号:US11025261B2

    公开(公告)日:2021-06-01

    申请号:US16894607

    申请日:2020-06-05

    摘要: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.

    PHASE-LOCKED LOOP MONITOR CIRCUIT
    6.
    发明申请

    公开(公告)号:US20190229737A1

    公开(公告)日:2019-07-25

    申请号:US16372706

    申请日:2019-04-02

    IPC分类号: H03L7/23 H03L7/095 H03L7/091

    摘要: A clock distribution circuit configured to output a clock signal includes a first circuit configured to use a reference clock signal to provide first and second reference signals, wherein the second reference signal indicates whether the first reference signal is locked with the reference clock signal; a second circuit configured to use the reference clock signal to provide an output signal and an indication signal indicative whether the output signal is locked with the reference clock signal; and a monitor circuit, coupled to the first and second circuits, and configured to use at least one of the first reference signal, the second reference signal, the output signal, and the indication signal to determine whether the second circuit is functioning correctly.