Abstract: In a particular embodiment, a power sourcing equipment (PSE) device is disclosed that includes a plurality of network input/output (I/O) interfaces adapted to physically and electrically connect to a respective plurality of cables. The PSE device further includes a plurality of driver circuits. Each driver circuit of the plurality of driver circuits is coupled to a respective network I/O interface of the plurality of network I/O interfaces to send and receive data via a respective cable of the respective plurality of cables. Further, the PSE device includes a shared isolation barrier to electrically isolate control circuitry from the plurality of driver circuits.

Abstract: In a particular embodiment, a system includes an input/output (I/O) interface adapted to couple to a network cable to receive power and data and includes a physical transport layer (PHY) circuit including multiple channels coupled to the I/O interface. The PHY circuit is adapted to send data to and receive data from a network device via the multiple channels. The system further includes a multiplexer circuit coupled to the PHY circuit to multiplex data from the multiple channels into a multiplexed data stream and includes an isolation barrier circuit coupled to the multiplexer circuit and to a particular circuit. The isolation barrier is adapted to electrically isolate a particular circuit from the multiplexer circuit, the PHY circuit, and the I/O interface.

Abstract: In a particular embodiment, a system includes an input/output (I/O) interface adapted to couple to a network cable to receive power and data and includes a physical transport layer (PHY) circuit including multiple channels coupled to the I/O interface. The PHY circuit is adapted to send data to and receive data from a network device via the multiple channels. The system further includes a multiplexer circuit coupled to the PHY circuit to multiplex data from the multiple channels into a multiplexed data stream and includes an isolation barrier circuit coupled to the multiplexer circuit and to a particular circuit. The isolation barrier is adapted to electrically isolate a particular circuit from the multiplexer circuit, the PHY circuit, and the I/O interface.

Abstract: In a particular embodiment, a power sourcing equipment (PSE) device is disclosed that includes a plurality of network input/output (I/O) interfaces adapted to physically and electrically connect to a respective plurality of cables. The PSE device further includes a plurality of driver circuits. Each driver circuit of the plurality of driver circuits is coupled to a respective network I/O interface of the plurality of network I/O interfaces to send and receive data via a respective cable of the respective plurality of cables. Further, the PSE device includes a shared isolation barrier to electrically isolate control circuitry from the plurality of driver circuits.

Abstract: In a particular embodiment, a circuit device includes a plurality of network ports, power regulator circuitry coupled to the plurality of network ports, and a control input adapted to receive software updates. The circuit device further includes a memory adapted to store a plurality of instructions, including processor operating system instructions and an upgrade routine. The circuit device further includes a programmable processor that is coupled to the memory and to the control input. The programmable processor is adapted to receive software updates via the control input and to execute the upgrade routine to upgrade the processor operating system instructions to reprogram the programmable processor. Further, the programmable processor is adapted to control the power regulator circuitry to selectively provide a power supply to a network device via a selected network port of the plurality of network ports.

Abstract: A signal generator and method that is tolerable to supply voltage fluctuations and differentials. A current switch is driven that is independent of the supply voltage. By clamping the slewing voltage at the gate of a transistor driver, the difference between the clamped gate voltage and the threshold turn on voltage of the driver will be constant with respect to the supply voltage. This will cause the transition edges of the driver's output voltage to be constant with respect to the supply voltage. This technique minimizes variations in the output signal edge transitions as the supply voltage varies over various tolerance ranges. Because this technique increases the control of the transition edges in the output signal, it is possible to generate much slower edges and still maintain a consistent transition voltage shape with variations in the supply voltage and the symbol width.