Abstract: One or more examples relate to a method that includes: applying oversampling to data on a reception datapath of a physical layer; generating a first signal indicating relationships between patterns exhibited by portions of oversampled data and a predetermined pattern; generating a second signal indicating an observed feature of the first signal, the observed feature indicative of a highest relationship between the patterns exhibited by respective portions of oversampled data and the predetermined pattern; and providing the second signal to indicate presence of a portion of data corresponding to the predetermined pattern at a coupled portion of the reception datapath of the physical layer.

Abstract: Disclosed embodiments relate, generally, to improved data reception handling at a physical layer. Some embodiments relate to end of line systems that include legacy media access control (MAC) devices and PHY devices that implement improved data reception handling disclosed herein. The improved data reception handling improves the operation of legacy systems, and the MAC more specifically, and in some cases to comply with media access tuning protocols implemented at the physical layer.

Abstract: An apparatus may comprise processing circuitry, a first pair of terminals, and a second pair of terminals that are electrically connected to a cable. The processing circuitry may provide a periodic signal including pulses to the first terminal. The duration of each of the pulses may be at least double the time of travel of the pulses along the length of the cable. The processing circuitry may also detect a fault in the cable responsive to a received signal at the second terminal responsive to the periodic signal.

Abstract: One or more examples relate, generally, to a method that includes: recording a value representing a time duration for a frame moving toward a cable or MAC to travel between a predetermined reference plane of a PHY-MAC interface to a predetermined reference plane of a PHY-able interface; and asserting an indication that the recorded value is available to be read from a PHY.

Abstract: Cable fault detection using reconstructed reflection signals and related systems, methods, and devices are disclosed. An apparatus includes a terminal to provision and observe a signal on the cable and a processing circuitry. The processing circuitry may reconstruct a reflection signal at least partially responsive to the observed signal, generate correlation values between the reconstructed reflection signal and multiple signals representing the transmit signal as variably delayed; and determine whether a fault is present in the cable at least partially responsive to the correlation values.

Abstract: Reducing emissions of predetermined frequencies using delay elements and related apparatuses, methods, and systems are disclosed. An apparatus includes an input terminal to receive a signal, delay elements electrically connected to the input terminal, an output terminal to provide a reduced slew rate signal, and combination circuitry electrically connected to the delay elements and the output terminal. The delay elements provide delayed signals responsive to the received signal. Respective ones of the delayed signals include delayed versions of the received signal. The combination circuitry combines the delayed signals to generate the reduced slew rate signal. Delays associated with the delay elements are chosen to reduce emissions of one or more predetermined frequencies of the reduced slew rate signal as compared to the received signal.

Abstract: Disclosed examples include a method. The method includes: conveying symbols from a PHY toward a MAC via a PHY-side of PHY-MAC interface; and filtering one or more symbols at an input of a PHY-side of an interface wrapper of the PHY-side of the PHY-MAC interface. Disclosed examples include an apparatus. The apparatus includes: a PHY-side of PHY-MAC interface; and a logic circuit provided at the PHY-side of PHY-MAC interface, the logic circuit comprising a symbol filter to filter one or more symbols conveyed via the PHY-side of PHY-MAC interface.

Abstract: Physical layer devices and related methods for determining Bit Error Rates (BERs) and correcting errors in signals received through shared transmission media of wireless local area networks are disclosed. A physical layer device is configured to identify coding violations in received signal, determine a rate of the coding violations in the signal, and estimate a BER of the signal to be equal to the determined rate of the coding violations. A physical layer device is configured to invert a half symbol immediately preceding or immediately following a coding violation based, at least in part, on signal integrities of the half symbol immediately preceding and the half symbol immediately following the coding violation to correct a bit error.

Abstract: Described is a digital interface and related systems, method and devices. In some embodiments, an interface may be an interface between a link layer and a physical transmission medium. The interface may be configured for a bit rate and/or reference clock that limits electromagnetic emissions (EME), for example, as compared to a bit rate and/or clock rate specified by interfaces widely used in industry.

Abstract: Disclosed are systems, methods, and devices for communicating a source of a 10SPE wake. Such a communication may be performed over a low-pin count hardware interface of a 10SPE physical layer (PHY) module having a split arrangement. A controller side of a 10SPE PHY may perform a local or remote 10SPE wake forward in response to a communicated source of a wake. Also disclosed is a digital interface for operatively coupling a PHY controller to PHY transceiver over a low-pin count connection, where the digital interface includes circuitry for checking the integrity of circuitry of the digital interface. Also disclosed is a PHY transceiver of a 10SPE PHY, where the transceiver includes a circuitry for controlling a starting polarity of frames.

Abstract: Physical layer devices and related methods for determining Bit Error Rates (BERs) and correcting errors in signals received through shared transmission media of wireless local area networks are disclosed. A physical layer device is configured to identify coding violations in received signal, determine a rate of the coding violations in the signal, and estimate a BER of the signal to be equal to the determined rate of the coding violations. A physical layer device is configured to invert a half symbol immediately preceding or immediately following a coding violation based, at least in part, on signal integrities of the half symbol immediately preceding and the half symbol immediately following the coding violation to correct a bit error.

Abstract: Disclosed embodiments relate, generally, to improved data reception handling at a physical layer (PHY). Some embodiments relate to end of line systems that include legacy media access control (MAC) and PHY that implement improved data reception handling disclosed herein. The improved data reception handling improves the operation of the end of line systems, and the MAC more specifically, and in some cases to comply with media access tuning protocols implemented at the physical layer.

Abstract: 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.

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.

Abstract: 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.

Abstract: Disclosed embodiments relate, generally, to improved data reception handling at a physical layer. Some embodiments relate to end of line systems that include legacy media access control (MAC) devices and PHY devices that implement improved data reception handling disclosed herein. The improved data reception handling improves the operation of legacy systems, and the MAC more specifically, and in some cases to comply with media access tuning protocols implemented at the physical layer.

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.

Abstract: Disclosed embodiments relate, generally, to improved data reception handling at a physical layer. Some embodiments relate to end of line systems that include legacy media access control (MAC) devices and PHY devices that implement improved data reception handling disclosed herein. The improved data reception handling improves the operation of legacy systems, and the MAC more specifically, and in some cases to comply with media access tuning protocols implemented at the physical layer.

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.

Abstract: Various embodiments relate to wired local area networks. A method may include detecting, at a node in a wired local area network, at least one event. A physical layer device of the network node is configured to implement a physical level collision avoidance (PLCA) sublayer. The at least one event may include at least one of an amount of data stored in a first-in-first-out (FIFO) buffer of the node being at least a threshold amount, and a received packet being a precision time protocol (PTP) packet incurring variable delay. The method may further include emulating a collision at the node in response to the at least one detected event.