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    Signal to noise ratio and bit error rate estimation for wired local area networks and related systems, devices, and methods
    11.
    发明授权
    Signal to noise ratio and bit error rate estimation for wired local area networks and related systems, devices, and methods 有权

    公开(公告)号：US11153115B2

    公开(公告)日：2021-10-19

    申请号：US16588764

    申请日：2019-09-30

    Applicant: Microchip Technology Incorporated

    Inventor： Jiachi Yu ,  Dixon Chen ,  Kevin Yang

    IPC: H04L12/40 ,  H04L12/413 ,  H04B17/309

    Abstract: Systems, device, and methods related to estimating a Signal to Noise Ratio (SNR) of a signal are disclosed. A method of estimating an SNR includes setting a threshold of a comparator of a physical layer device to a first value, applying a signal to the comparator, and determining a first bit error number of an output of the comparator with the threshold set at the first value. The method also includes setting the threshold of the comparator to a second value that is different from the first value, applying the signal to the comparator, and determining a second bit error number of the output of the comparator with the threshold set at the second value. The method further includes determining an SNR of the signal based on the first bit error number and the second bit error number.

    Fast initial phase search for digital clock and data recovery and related systems, devices, and methods
    12.
    发明授权
    Fast initial phase search for digital clock and data recovery and related systems, devices, and methods 有权

    公开(公告)号：US11101973B2

    公开(公告)日：2021-08-24

    申请号：US16588621

    申请日：2019-09-30

    Applicant: Microchip Technology Incorporated

    Inventor： Jiachi Yu ,  Dixon Chen ,  Kevin Yang

    IPC: H04L7/02 ,  H04L7/00

    Abstract: Systems, devices, and methods related to selecting a sample phase of a signal are disclosed. A method includes sampling a signal including a plurality of symbols with a plurality of different sample phases to obtain sample values of each of the plurality of symbols at each of the plurality of different sample phases. The signal is received from a shared transmission medium. The method also includes determining an edge sample phase of the plurality of different sample phases that corresponds to edges of the symbols based on the sample values. The method further includes determining a center sample phase of the plurality of different sample phases based on the determined edge sample phase, and using the determined center sample phase to determine values of the symbols.

    FAST INITIAL PHASE SEARCH FOR DIGITAL CLOCK AND DATA RECOVERY AND RELATED SYSTEMS, DEVICES, AND METHODS
    13.
    发明申请
    FAST INITIAL PHASE SEARCH FOR DIGITAL CLOCK AND DATA RECOVERY AND RELATED SYSTEMS, DEVICES, AND METHODS 有权

    公开(公告)号：US20210058225A1

    公开(公告)日：2021-02-25

    申请号：US16588621

    申请日：2019-09-30

    Applicant: Microchip Technology Incorporated

    Inventor： Jiachi Yu ,  Dixon Chen ,  Kevin Yang

    IPC: H04L7/02 ,  H04L7/00

    Abstract: Systems, devices, and methods related to selecting a sample phase of a signal are disclosed. A method includes sampling a signal including a plurality of symbols with a plurality of different sample phases to obtain sample values of each of the plurality of symbols at each of the plurality of different sample phases. The signal is received from a shared transmission medium. The method also includes determining an edge sample phase of the plurality of different sample phases that corresponds to edges of the symbols based on the sample values. The method further includes determining a center sample phase of the plurality of different sample phases based on the determined edge sample phase, and using the determined center sample phase to determine values of the symbols.

    INTERFACE FOR IMPROVED MEDIA ACCESS, AND RELATED SYSTEMS, METHODS, AND DEVICES
    20.
    发明申请
    INTERFACE FOR IMPROVED MEDIA ACCESS, AND RELATED SYSTEMS, METHODS, AND DEVICES 有权

    公开(公告)号：US20210058965A1

    公开(公告)日：2021-02-25

    申请号：US16587583

    申请日：2019-09-30

    Applicant: Microchip Technology Incorporated

    Inventor： Dixon Chen ,  John Junling Zang ,  Yanzi Xu ,  Venkat Iyer

    IPC: H04W74/08 ,  H04L29/10 ,  H04L12/863 ,  H04L29/08 ,  H04L7/02

    Abstract: Disclosed are systems and devices for interfacing media access tuning circuitry that implements collision handling or traffic shaping with a reduced media independent interface (RMII). In some embodiments, an interface circuitry manages emulated signals generated by a media access tuning circuitry in response to detecting that the emulated signals would cause incorrect operation of an RMII. Also disclosed is a physical layer (PHY) device for a multidrop network. In some embodiments the PHY device implements physical layer collision techniques and operable to communicate with a media access control (MAC) device via an RMII, where the MAC is configured for carrier-sense multiple access (CSMA), CSMA with collision detection (CSMA/CD), or CSMA with collision avoidance (CSMA/CA). Also disclosed are processes for managing signaling at a PHY that implements physical layer collision avoidance (PLCA) or traffic shaping, as the case may be.

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