Qualcomm Incorporated

Chris M Rosolowski

Todd Robert Sutton

Christopher Kong Yee Chun

Daniel Fred Filipovic

Joseph Duncan

Xu Chi

Orlando Santiago

Rick Allen Wilcox

Richard Dominic Wietfeldt

Lalan Jee Mishra

Mohit Kishore Prasad

Frederic Bossu

Helena Deirdre O'Shea

Marko Harry Koski

Sandeep Chaman Dhar

Hardik M Patel

Narendra Singh Mehta

Rashed Hoque

Zdravko Lukic

Aruna Kumar Tripathy

Uma Mahesh Revuri

Rick A Wilcox

Xu Mike Chi

Systems, methods, and apparatus managing access to a power management device are disclosed. A system has a primary integrated circuit and a power management integrated circuit. The primary integrated circuit has a communication controller configured to control access to a first serial bus for a plurality of subsystems in the primary integrated circuit. The power management integrated circuit is coupled to the first serial bus and to a second serial bus. An access control circuit in the power management integrated circuit is configured by the primary integrated circuit to control access to the power management integrated circuit through the second serial bus. The primary integrated circuit may be configured to write an access control configuration to the power management integrated circuit. The access control configuration may define write access rights for a secondary integrated circuit coupled to the power management integrated circuit through the second serial bus.

Peripheral access control for secondary communication channels in power management integrated circuits

A voltage regulator circuit using predictively precharged voltage rails is generally disclosed. For example, the voltage regulator circuit may include a main switching regulator configured to provide a target voltage, the main switching regulator having a first voltage node, a precharge switching regulator configured to provide a precharge voltage, the precharge switching regulator having a second voltage node, the precharge voltage based on a difference between the target voltage and a next target voltage to be provided by the main switching regulator, and a precharge switch circuit configured to selectively couple the second voltage node to an output voltage node based upon a transition from the target voltage to the next target voltage.

Methods and apparatuses for voltage regulation using predictively charged precharge rails

A voltage regulator circuit using precharge voltage rails is generally disclosed. For example, the voltage regulator circuit may include a first voltage regulator having a voltage output, an output capacitor coupled to the voltage output, and one or more precharge voltage circuits configured to selectively couple to the voltage output, each of the one or more precharge voltage circuits comprising a capacitor coupled between an output of a precharge voltage regulator and a reference potential.

Methods and apparatuses for voltage regulation using precharge rails

An integrated circuit includes a processor to monitor a communication interface arbitration sequence on a system bus, determine, based on the monitored arbitration sequence, a master or slave identifier that is sending a transaction on the system bus, and process the transaction based on the determined master or slave identifier that is sending the transaction.

Communication interface transaction security

Systems and methods are disclosed method for operating a serial interconnect of a computer system in a time deterministic manner. An exemplary method comprises that a command to be sent over the serial interconnect in a transaction is to be executed at a specific time. A delay period for the command to be sent from a master of the computer system to a slave of the computer system via the serial bus is determined, where the delay period determined based on a length of an arbitration phase of the transaction. The command is then sent to the slave of the computer system via the serial bus after the delay period.

System and method for deterministic transactions on a serial bus

Systems, methods, and apparatus for communication virtualized general-purpose input/output signals over a serial communication link A method performed at a transmitting device coupled to a communication link includes configuring general-purpose input/output (GPIO) state from a plurality of sources into a virtual general-purpose input/output word, identifying one or more destinations for the first GPIO word based on a mapping of the GPIO state to one or more devices coupled to a serial bus, and transmitting the first GPIO word to each destination.

Multi-port multi-sideband-GPIO consolidation technique over a multi-drop serial bus

An apparatus includes a temperature measuring device within a thermally conductive package. A crystal within the package is thermally coupled to the temperature measuring device and subjected to a same temperature as the temperature measuring device. A controller external to the package is configured to receive a signal from the crystal and a temperature measurement from the temperature measuring device. The controller is configured to estimate a frequency error of the crystal based on the temperature measurement and to provide a frequency error estimate to an external system.

Wireless chipset with a non-temperature compensated crystal reference

Systems and methods are disclosed resetting a slave identification (SID) of an integrated circuit (IC). An exemplary method comprises determining that a plurality of ICs in communication with a shared bus have the same SID, the shared bus operating in a master/slave configuration. A common memory address of the ICs is identified, where data stored in the common memory address is different for a first IC and a second IC. Each of the ICs receives over the shared bus a new SID value and match data. The ICs compare the match data with the data stored in the common memory address. If the match data is the same as the data in the common memory address, the SID is changed the received new SID value.

System and method for changing a slave identification of integrated circuits over a shared bus

A circuit comprising an ECM system is provided. The circuit includes a current monitor circuit configured to monitor the ECM system to measure a set of currents supplied to a set of circuits. The circuit also includes an alert circuit configured to generate an alert based on at least one current of the set of currents in comparison to at least one threshold. The circuit further includes a throttle circuit configured to throttle a performance of at least one circuit in order to decrease the current to the at least one circuit based on the generation of the alert. The current used by the circuit may act as an analogue for the system power used. Accordingly, the current used by the circuit may be used to determine when to throttle one or more aspects of the functionality of the circuit.

Apparatus and methods for embedded current measurements for performance throttling

Exemplary embodiments are related to enhancing power efficiency of an electronic device. A device may include a power management module and a radio-frequency (RF) module coupled to the power management module. The device may further include a digital module coupled to each of the power management module and the RF module and configured to dynamically adjust at least one setting of the power management module based on one or more RF conditions.

Dynamic power management control

An electronic device is described. The electronic device includes a first port. The electronic device also includes a second port. The electronic device further includes a multiphase charger. The multiphase charger includes a first buck. The multiphase charger also includes a second buck. The multiphase charger further includes a first port switch. The multiphase charger also includes a second port switch. The multiphase charger further includes a reverse boost switch. The multiphase charger also includes a multiphase switch.

Growing community of inventors

San Diego, CA, United States of America

Chris M Rosolowski