Abstract: Methods and systems are disclosed for protecting a host device from one or more power surges transmitted from a sink device. When a sink device is detected as being connected to the host device, a limited level of power is provided to the sink device over a power transmission line and the sink device is authenticated. A normal level of power is provided to the sink device only if the authentication is successful, otherwise a reduced level of power is provided.

Abstract: A method of producing an apparatus comprising an electrical circuit that has one or more characteristics that meet a design specification is presented. The method includes designing the electrical circuit with a trim circuit having a trim value that is variable, The electrical circuit is adjustable based on the trim value of the trim circuit. There is encoding of the functional circuit information and/or trim circuit information in a tag, The method has a reading of the functional circuit information and/or the trim circuit information stored in the tag and the determining of the trim value for the trim circuit that results in the characteristic of the electrical circuit meeting the design specification using the functional circuit information and/or the trim circuit information.

Abstract: An apparatus including a multiplexer configured to provide an output clock selected from a source clock, a destination clock, and a transition clock is provided. The apparatus further includes a phase difference calculation module configured to calculate a phase difference between the source clock and the destination clock and a clock generation module configured to generate a plurality of clocks. The apparatus further includes a clock selection module configured to select one of the plurality of clocks as the transition clock and a control circuit configured to provide: (1) a signal to the clock selection module for selecting one of the plurality of clocks as the transition clock based on the phase difference between the source clock and the destination clock and (2) a signal to the multiplexer to provide as the output clock one of the source clock, the destination clock, or the transition clock.

Abstract: Apparatus, systems, and methods are provided for transmitting messages over a serial interface. A method comprises receiving a first signal at a first time and receiving a second signal at a second time, the second time being after the first time. If a difference between the second time and the first time is less than a threshold time period, the method comprises generating a first message that is representative of the first signal and the second signal and transmitting the first message over the serial interface. In accordance with one embodiment, the threshold time period is equal to one half of an interface acquisition delay time period associated with the serial interface.

Abstract: Systems and methods are provided for controlling headroom of an amplifier (e.g., in a transmitter). A method comprises obtaining a target output power for a current interval and obtaining a target headroom for a subsequent interval. The method continues by adjusting, during the current interval, the power output capability of the amplifier based on the target headroom and adjusting the input power of an input signal based on the target output power, such that the output power of the amplifier is substantially constant during the current interval as the power output capability of the amplifier is adjusted.

Abstract: Apparatus, systems, and methods are provided for transmitting messages over a serial interface. A method comprises receiving a first signal at a first time and receiving a second signal at a second time, the second time being after the first time. If a difference between the second time and the first time is less than a threshold time period, the method comprises generating a first message that is representative of the first signal and the second signal and transmitting the first message over the serial interface. In accordance with one embodiment, the threshold time period is equal to one half of an interface acquisition delay time period associated with the serial interface.

Abstract: Systems and methods are provided for controlling headroom of an amplifier (e.g., in a transmitter). A method comprises obtaining a target output power for a current interval and obtaining a target headroom for a subsequent interval. The method continues by adjusting, during the current interval, the power output capability of the amplifier based on the target headroom and adjusting the input power of an input signal based on the target output power, such that the output power of the amplifier is substantially constant during the current interval as the power output capability of the amplifier is adjusted.

Abstract: An apparatus including a multiplexer configured to provide an output clock selected from a source clock, a destination clock, and a transition clock is provided. The apparatus further includes a phase difference calculation module configured to calculate a phase difference between the source clock and the destination clock and a clock generation module configured to generate a plurality of clocks. The apparatus further includes a clock selection module configured to select one of the plurality of clocks as the transition clock and a control circuit configured to provide: (1) a signal to the clock selection module for selecting one of the plurality of clocks as the transition clock based on the phase difference between the source clock and the destination clock and (2) a signal to the multiplexer to provide as the output clock one of the source clock, the destination clock, or the transition clock.