SLVSCO4D July 2015 – February 2019 TPS65917-Q1
In AUTODEVON mode, at the end of the power-up sequence, the DEV_CTRL.DEV_ON register bit is automatically set to 1 and the device remains in the ACTIVE state until the host processor clears this bit. No dedicated signal from processor is required to maintain the PMIC in the ACTIVE state.
The DEV_ON bit can also be configured so that it is not auto-updated (set to 1) at the end of the power-up sequence. In this case, the device functions similarly to when it is in the POWERHOLD mode, except that the host has control over the device using the DEV_CTRL.DEV_ON register bit instead of the POWERHOLD pin. Therefore, to maintain the device in the ACTIVE state, the host must set and keep this bit at 1.