SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The transition to STANDBY state always needs to be done through ACTIVE state. Initially the device remains in OFF state. After power on sequence, device moves to ACTIVE state. All the clocks to processor and peripherals are ungated during ACTIVE state. In order to move to STANDBY state, WFI/WFE should be executed from individual R5SS and clock gating can be enabled for all or required peripherals. During this state dynamic power consumption is reduced.
Transition from STANDBY state to ACTIVE state can be done through an IRQ which will enable the clocks to processor. But IP clocks are not automatically switched ON. They need to be programmed in MSS_RCM.<IP>_CLK_GATE register to enable/disable respective IP clock.
The Device can transition into the OFF state from any state by pulling down the external power supplies to the device, which will turn off the device. The transitioning schemes explained above are shown below: