公开(公告)号：US20210089651A1

公开(公告)日：2021-03-25

申请号：US16579415

申请日：2019-09-23

Applicant: STMicroelectronics International N.V.

Inventor： Deepak BARANWAL ,  Nirav Prashantkumar TRIVEDI ,  Sandip ATAL

IPC: G06F21/55 ,  G06F21/75 ,  G06F9/455 ,  G06F13/16

Abstract: An embedded system includes a peripheral and system-on-a-chip executing virtual machines and a hypervisor. The peripheral includes a crossbar circuit receiving digital sensor signals and selectively outputting the digital sensor signals to different outputs, queue circuits each receiving a different one of the digital sensor signals from the crossbar circuit, and queue protection circuits associated with the queue circuits and selectively permitting access to one of the queue circuits by the virtual machines. The hypervisor controls the queue protection circuits to set which of the virtual machines may access which queue circuits. A sensor protection circuit selectively permits reading of the digital sensor signals from the crossbar circuit by the queue circuits. The hypervisor controls the sensor protection circuit to set which of the queue circuits may access each of the digital sensor signals from the crossbar circuit.