【CA55 TRM笔记】Power Management

Introduction

Voltage domains

CA55有两个Voltage domain: Vcpu 和 Vsys。

Power domains

Architecture clock gating

WFI和WFE指令让系统关闭top level的clock，进入 low power standby mode. core还是有电的，并保持了所有的状态。

Power modes

On

In this mode, the core is on and fully operational.
The core can be initialized into the On mode. If the core does not use P-Channel, you can