Qualcomm Incorporated

Nileena Pathalayi Alakandy

Lior Amarilio

Arun Gothekar

Gur Prasad Srivastava

Syed Naseef

Rajesh Chava

Bhavya Soneta

Mukesh Kumar Pravinbhai Savaliya

A peripheral controller includes a serial engine configured to provide an interface to a serial bus, a multiplexer configured to select between transactions directed to the serial bus and initiated in a plurality of execution environments, and an access control circuit configured to determine when a first transaction to be executed over the serial bus is initiated from a first execution environment, enforce an access policy when the first execution environment is a secured execution environment, determine when a second transaction is initiated from a second execution environment, block the second execution environment and a peripheral device from accessing the serial bus when the first execution environment is accessing the serial bus, and provide the second execution environment and the peripheral device access to the serial bus when the second execution environment is an unsecured execution environment. The access policy may be based on an address of a peripheral device.

Sharing and protecting secured subordinate devices on an unsecured bus

Systems and methods for essentially continuous audio flow for Internet of Things (IoT) devices during power mode transitions contemplate an audio bus, such as a SOUNDWIRE audio bus, to maintain an audio stream during a clock transition without having to tear down the audio stream as a new clock becomes active on the audio bus. By preserving the audio stream during such a transition, gaps in the audio are avoided resulting in better performance and end user experience.

Audio flow for internet of things (IOT) devices during power mode transitions

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Bengaluru, India

Nileena Pathalayi Alakandy