Abstract: This document discusses, among other things, apparatus, systems, and methods to prevent a voltage of a charging battery from exceeding a voltage threshold, including receiving charging information from a battery and controlling an output current of a travel adapter, including adjusting the received battery current information using a load current to prevent the voltage of the battery from exceeding a voltage threshold, and providing output current limit information to the travel adapter using the adjusted battery current information.

Abstract: Techniques for charging an electronic device using a Universal Serial Bus (USB) cable and connector are provided. In an example, an apparatus can include a charger, a USB cable coupled to the charger at a first end of the cable, a paddle card for a USB connector coupled to the cable at a second end of the cable, the paddle card including differential data contacts, and wherein the differential data contacts of the paddle card are shorted together at the paddle card.

Abstract: This document discusses among other things, methods and apparatus to conserve energy when providing proximity information. An example apparatus can include an energy emitter configured to emit a first pulse of energy, an energy sensor configured to receive reflected energy from the first pulse of energy, a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected energy. The control circuit can be configured to control the energy emitter, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of energy and a subsequent pulse of energy using the comparison.

Abstract: This document discusses, among other things, systems and methods to communicate data over a data bus during a first period of a clock signal with a uniform power distribution, including providing a complimentary bit state of the data during a first portion of the first period of the clock signal and providing an actual bit state of the data during a second portion of the first period of the clock signal. In an example, the first period can include first, second, third, and fourth portions, and the systems and methods can include providing a complimentary bit state of the data during first and fourth portions of the first period of the clock signal and an actual bit state of the data during a second portion of the first period of the clock signal.

Abstract: Apparatus and methods are provided for defending an electronic circuit secret algorithm and secret parameter values against a side-attack. In an example, a method can include receiving first one or more parameters for altering a clock signal of the electronic device at a non-volatile memory register, and altering a frequency of the clock signal of the electronic device during execution of an authentication routine according to the first one or more parameters.

Abstract: This document discusses, among other things, apparatus and methods to optimize charging of a battery, including providing a first charge profile configured to provide charge current pulses to a battery in a plurality of steps. In the first charge profile, the charge current pulses can be stepped down in the plurality of steps using a comparison of a terminal voltage of the battery to a clamp voltage. When the terminal voltage meets or exceeds the clamp voltage, a high time current of the charge current pulse can be decreased and the clamp voltage can be increased before providing a subsequent charge current pulse.

Abstract: This document discusses, among other things, an attack detection module configured to permanently shut down a slave device after a number of consecutive attacks.

Abstract: In one general aspect, a repeater can include an input terminal configured to be coupled to a first portion of a MIPI signal path. The MIPI signal path being a unidirectional path between a receiver and a transmitter, the input terminal configured to receive a set of signals from the receiver via the MIPI signal path. The repeater can include an output terminal configured to be coupled to a second portion of the MIPI signal path, the first portion of the MIPI signal path and the second portion of the MIPI signal path having a combined distance greater than 30 centimeters.

Abstract: This document discusses, among other things, systems and methods to communicate data over a data bus during a first period of a clock signal with a uniform power distribution, including providing a complimentary bit state of the data during a first portion of the first period of the clock signal and providing an actual bit state of the data during a second portion of the first period of the clock signal. In an example, the first period can include first, second, third, and fourth portions, and the systems and methods can include providing a complimentary bit state of the data during first and fourth portions of the first period of the clock signal and an actual bit state of the data during a second portion of the first period of the clock signal.

Abstract: Apparatus and methods are provided for defending an electronic circuit secret algorithm and secret parameter values against a side-attack. In an example, a method can include receiving first one or more parameters for altering a clock signal of the electronic device at a non-volatile memory register, and altering a frequency of the clock signal of the electronic device during execution of an authentication routine according to the first one or more parameters.

Abstract: This document discusses, among other things, a method of distributing authentication keys that can prevent certain forms of circuit fabrication piracy. In an example, a method can include selecting a number of authentication keys for generation at a key generation computer, generating a random number using a random number generator of the key generation computer, generating the number of authentication keys using the random number and a key generation algorithm stored in the memory of the key generation computer, scrambling each of the number of authentication keys using a scrambling routine executing on the key generation computer, and distributing the scrambled authentication keys to an authorized manufacturers.

Abstract: This document discusses, among other things, an attack detection module configured to permanently shut down a slave device after a number of consecutive attacks.

Abstract: This document provides apparatus and methods for providing low latency response from a processor to the interrupts collected from peripheral devices. In an example, an apparatus can collect interrupt requests from a plurality of peripheral devices, and can communicate interrupt information to a processor. Certain examples can reduce the quantity of processor general purpose inputs and outputs configured to receive the peripheral device interrupts in comparison to systems where the peripheral device interrupts are directly coupled to the processor.

Abstract: This document discusses among other things, methods and apparatus to conserve energy when providing proximity information. An example apparatus can include an energy emitter configured to emit a first pulse of energy, an energy sensor configured to receive reflected energy from the first pulse of energy, a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected energy. The control circuit can be configured to control the energy emitter, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of energy and a subsequent pulse of energy using the comparison.

Abstract: Embodiments provide methods, systems, devices, and/or machine readable storage medium for memory built-in self testing (memory BIST) that may not require JTAG. Embodiments may provide less chip overhead through the use of one or more direct access pins. Embodiments may provide simple checks to determine if the memories on a chip are good or bad with minimal cost, for example. In some cases, the memory BIST may determine whether or not memories are good when the chip powers on. Some embodiments may also perform stress testing on the memories to force early life failures of the memories. Embodiments do not necessarily have to diagnose failures.

Abstract: This document discusses among other things, methods and apparatus to conserve energy when providing proximity information. An example apparatus can include an energy emitter configured to emit a first pulse of energy, an energy sensor configured to receive reflected energy from the first pulse of energy, a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected energy. The control circuit can be configured to control the energy emitter, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of energy and a subsequent pulse of energy using the comparison.

Abstract: In one general aspect, a repeater can include an input terminal configured to be coupled to a first portion of a MIPI signal path. The MIPI signal path being a unidirectional path between a receiver and a transmitter, the input terminal configured to receive a set of signals from the receiver via the MIPI signal path. The repeater can include an output terminal configured to be coupled to a second portion of the MIPI signal path, the first portion of the MIPI signal path and the second portion of the MIPI signal path having a combined distance greater than 30 centimeters.

Abstract: This document provides apparatus and methods for providing low latency response from a processor to the interrupts collected from peripheral devices. In an example, an apparatus can collect interrupt requests from a plurality of peripheral devices, and can communicate interrupt information to a processor. Certain examples can reduce the quantity of processor general purpose inputs and outputs configured to receive the peripheral device interrupts in comparison to systems where the peripheral device interrupts are directly coupled to the processor.

Abstract: The present application discusses, among other things, apparatus to reduce the amount of processor general purpose input or outputs consumed to interface simultaneously with multiple subscription identification modules (SIMs). In an example, an apparatus can include a controller, first and second subscriber identity module (SIM) ports configured to transmit SIM information between the controller and first and second SIMs coupled to the first and second SIM ports, and a communication controller configured to couple to a base band processor using a two-wire serial communication bus, the communication controller configured to transmit the SIM information between the controller and the base band processor.

Abstract: This document discusses among other things, methods and apparatus to conserve energy when providing proximity information. An example apparatus can include an energy emitter configured to emit a first pulse of energy, an energy sensor configured to receive reflected energy from the first pulse of energy, a control circuit including a processor, the processor configured to provide first proximity information of the apparatus with respect to an object using the reflected energy. The control circuit can be configured to control the energy emitter, to compare the first proximity information with second proximity information, and to modulate a delay between the first pulse of energy and a subsequent pulse of energy using the comparison.