While reading the datasheet i find the following. "See Pin Attributes for conection if unused".
There is no such thing in the datasheet.
So the question is what to do with the PMICEN pin if you don't use a EC.
Hi Jeroen,
The PMICEN pin controls the PMIC's transition into and out of G3 state (all rails shutdown). How it is connected may vary system to system. For an always on system (or at least S5 or above), PMICEN can be tied high. If you would like the system to go from G3 to S5 when a push button is pressed, you could use a simple push button circuit like this: Push button app note
If you are looking for more features, it can get as intricate as you may want to design.
I've got one more good example. For cases where you would like the system to start-up with a push button press and be able to power down to G3 by processor control, a circuit like this may work:
Where EN1 is the enable for the first rail you wanted started up and PG1 is the power good of that rail. For most systems this is either V5A or V3P3A (external discrete rails) or the PMICEN. PG1 is then either the PG for the external V5A or V3P3A or RSMRSTB from PMIC if PMICEN is used. If using V5A / V3P3A, then their PG would connect to PMICEN. This allows the processor to disable the PMIC by setting SUSPWRDWNACK high while SLP_S4B is low and RSMRST_B is high to initiate a shutdown.
Many systems won't need this level of complexity, it will depend on what you require for your system.
