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    RECOVERY OF REFERENCE CLOCK ON A DEVICE
    12.
    发明申请
    RECOVERY OF REFERENCE CLOCK ON A DEVICE 审中-公开

    公开(公告)号：US20180307293A1

    公开(公告)日：2018-10-25

    申请号：US15926643

    申请日：2018-03-20

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Bradley Allan LAMBERT ,  Bruce E. DUEWER ,  David HISKY ,  Marc J. KOBAYASHI ,  Michael A. KOST

    IPC: G06F1/32 ,  G06F1/10 ,  G06F1/12 ,  G06F13/38

    CPC classification number: G06F1/3215 ,  G06F1/10 ,  G06F1/12 ,  G06F13/385

    Abstract: A device may include an input for receiving information communicated from a host to the device and a controller configured to recover a device reference clock on the device, the device reference clock proportional to a host reference clock of the host, when clock signaling from the host to the device is unavailable. The controller may recover the device reference clock by measuring a ratio between the host reference clock and the device reference clock of the device by monitoring, with the device, host start-of-frame markers communicated from the host to the device via the input, creating a recovered reference clock based on the measured ratio, and creating local start-of-frame markers that are phase locked with the host start-of-frame markers based on the recovered reference clock.A method for generating a not-yet (NYET) signal in a recovered reference system for recovering a device reference clock on a device, wherein the NYET signal indicates that the device is not yet ready for transition into a low power mode, in order to improve a quality of a recovered reference clock representative of a host reference clock of a host communicatively coupled to the device, may be provided. The method may include detecting receipt of start-of-frame markers from the host to the device, responsive to detecting receipt of the markers, determining whether a condition for NYET generation is being met, responsive to the condition for NYET generation being met, generating the NYET signal to cause the host to continue generating the markers, and responsive to the condition for NYET generation not being met, causing the device to generate an acknowledge signal for transition of the device into the low power mode.

    COMMUNICATION PROTOCOL ADAPTER
    13.
    发明申请
    COMMUNICATION PROTOCOL ADAPTER 审中-公开

    公开(公告)号：US20180039585A1

    公开(公告)日：2018-02-08

    申请号：US15662777

    申请日：2017-07-28

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Bradley Allan LAMBERT ,  Michael A. KOST

    IPC: G06F13/10 ,  G06F13/42

    Abstract: In accordance with embodiments of the present disclosure, an adapter for different types of devices that are defined by a full set of capabilities for a communication protocol may include one or more ports, wherein each of the one or more ports is configured to receive one of the different types of devices, and a device controller communicatively coupled to the one or more ports. The device controller may be configured to, when one of the different types of devices is received by the one or more ports obtain information related to a detection of the one of the different types of devices and, based on the information related to the detection, expose a subset of capabilities from the full set of capabilities to a bus of the communication protocol, wherein the subset of capabilities is defined by the one of the different types of devices for the communication protocol.

    MULTI-CHIP SYNCHRONIZATION IN SENSOR APPLICATIONS
    16.
    发明申请
    MULTI-CHIP SYNCHRONIZATION IN SENSOR APPLICATIONS 审中-公开

    公开(公告)号：US20200272301A1

    公开(公告)日：2020-08-27

    申请号：US16457489

    申请日：2019-06-28

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Bruce E. DUEWER ,  Michael A. KOST ,  Matthew BEARDSWORTH ,  Tejasvi DAS ,  Siddharth MARU

    IPC: G06F3/041 ,  G06F3/044 ,  G06F3/045 ,  H04J3/06

    Abstract: A system may include a plurality of actively-driven inductive sensors and a plurality of control circuits, each control circuit of the plurality of control circuits configured to control operation of a respective set of the actively-driven inductive sensors, each control circuit of the plurality of control circuits communicatively coupled to the other control circuits via a connection configured to distribute synchronization information among the plurality of control circuits. Each of the plurality of control circuits may further be configured to configure a schedule for controlling time-division multiplexed operation of its respective set of actively-driven inductive sensors and control time-division multiplexed operation of its respective set of actively-driven inductive sensors based on the schedule and the synchronization information in order to minimize interference among the plurality of actively-driven inductive sensors.

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