Abstract: According to some embodiments, a communication interface 110 may include a biasing circuit 140 and a logic unit 130. The biasing circuit 140 may be configured to provide a bias voltage to a port of the communication interface 110. The logic unit 130 may be configured to enable and disable the biasing circuit 140 based on a first signal received from a controller of the communication interface 110. The logic unit 130 may also be configured to enable and disable the biasing circuit 140 based on a suspend signal received from the controller of the communication interface 110.

Abstract: Various embodiments include apparatus, systems, and methods having a reference node to receive a reference voltage, a first node to provide a signal, and a circuit. Such a circuit may include a second node to receive different voltages greater than the reference voltage and to cause the signal at the first node to switch between a first voltage greater than the reference voltage and a second voltage greater than the reference voltage. Other embodiments including additional apparatus, systems, and methods are described.

Abstract: An analog-to-digital converter circuit includes a digital-to-analog converter circuit, a voltage stabilization circuit, and a comparator circuit. The digital-to-analog converter circuit generates an analog signal based on digital signals and a reference voltage. The voltage stabilization circuit reduces variations in the reference voltage in response to at least one of the digital signals. The comparator circuit generates a comparison output based on the analog signal. The digital signals are generated based on the comparison output.

Abstract: According to some embodiments, a communication interface 110 may include a biasing circuit 140 and a logic unit 130. The biasing circuit 140 may be configured to provide a bias voltage to a port of the communication interface 110. The logic unit 130 may be configured to enable and disable the biasing circuit 140 based on a first signal received from a controller of the communication interface 110. The logic unit 130 may also be configured to enable and disable the biasing circuit 140 based on a suspend signal received from the controller of the communication interface 110.

Abstract: Various embodiments include apparatus, systems, and methods having a reference node to receive a reference voltage, a first node to provide a signal, and a circuit. Such a circuit may include a second node to receive different voltages greater than the reference voltage and to cause the signal at the first node to switch between a first voltage greater than the reference voltage and a second voltage greater than the reference voltage. Other embodiments including additional apparatus, systems, and methods are described.