公开(公告)号：US20160077916A1

公开(公告)日：2016-03-17

申请号：US14484125

申请日：2014-09-11

Applicant: QUALCOMM INCORPORATED

Inventor： JEFFREY DAVID SHABEL ,  PHILIP MUELLER, JR. ,  ZHURANG ZHAO ,  CARL VICTOR STREETER ,  RASHMI KULKARNI

IPC: G06F11/14 ,  G06F11/30

CPC classification number: G06F11/141 ,  G06F1/3206 ,  G06F1/3215 ,  G06F1/3287 ,  G06F1/3293 ,  G06F11/1428 ,  G06F11/3062 ,  Y02D10/122 ,  Y02D10/171

Abstract: Systems and methods for external access detection and recovery in a subsystem of a system-on-a-chip (SoC) in a portable computing device (PCD) are presented. In operation, a subsystem of the SoC is operated in an internal mode independently of the SoC while the SoC is in a low power state, such as a non-functional or zero power state or mode. The subsystem comprises a processor in communication with a memory, a sensor, and a monitor module. The monitor module detects when the processor of the subsystem requests access to a component external to the subsystem. In response to this detected request, the SoC is caused to enter into a full power state or mode, and the subsystem is caused to exit the internal mode of operation.

Abstract translation: 提出了便携式计算设备（PCD）中的片上系统（SoC）的子系统中外部访问检测和恢复的系统和方法。 在操作中，SoC的子系统在独立于SoC的内部模式下操作，而SoC处于低功率状态，例如非功能或零功率状态或模式。 子系统包括与存储器，传感器和监视器模块通信的处理器。 监视器模块检测子系统的处理器何时请求访问子系统外部的组件。 响应于该检测到的请求，使SoC进入全功率状态或模式，使子系统退出内部操作模式。