Microchip Technology Inc.

Yanzi Xu

Dixon Chen

John Junling Zang

Henry Liang

Venkatraman Iyer

Hongming An

Jiachi Yu

Kevin Yang

Various embodiments relate to detecting a cable fault within a network. A method may include transmitting a pulse signal to a cable of a shared bus from a node, and observing a signal received at the node in response to the pulse signal. The method may also include determining a fault condition of the cable based on the pulse signal and on an amplitude of each sample of a number of samples of the one or more observed signals.

Diagnosing cable faults within a network

On or more examples relate, generally, to an apparatus that includes a reconciliation sublayer of a physical layer, a reduced media independent interface (RMII) of the physical layer, and a logic circuit. Such a logic circuit may operate to receive a changed carrier sense signal provided by the reconciliation sublayer, generate a further changed carrier sense signal at least partially responsive to a prediction that the changed carrier sense signal would cause unintended signaling at the RMII, and provide the further changed carrier sense signal to the RMII.

Changing carrier sense signal generated by a reconciliation sublayer of a physical layer that may cause unintended signaling at a reduced media independent interface (RMII)

Various embodiments relate to detecting collisions on a communication network. A method may include transmitting a first signal to a shared bus. The method may also include observing a second signal at the shared bus during the transmitting. Further, the method may include detecting a collision on the shared bus in response to an amplitude of the second signal being one of greater than a first threshold and less than a second threshold.

Detecting collisions on a network

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.

Interface for improved media access, and related systems, methods, and devices

Various embodiments relate to detecting a cable fault within a 10SPE network. A method may include transmitting a pulse signal to a cable of a shared bus from a node, and observing a signal received at the node in response to the pulse signal. The method may also include determining a fault condition of the cable based on the pulse signal and on an amplitude of each sample of a number of samples of the one or more observed signals.

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Guangdong, China

Yanzi Xu