how does imx7d PMIC_ON_REQ pin operate with ON/OFF pin

[hyoungkikim]

hi experts 

I am currently designing a custom board using imx7d.

i don't understand clearly  what is the  ON/OFF pin operation. If POR_B is connected using PMIC,

when POWER ON  , does  PMIC_REQ_REQ pin   change from 0 to 1 without  ON/OFFpin pressed 

I don't understand that PMIC_ON_REQ changes from 0 to 1  "by alarm" in Figure 6-5 on the manual.

thank you  sincerely 

[JorgeCas]

Hello,

As is mentioned on the image, the ONOFF pin of i.MX device shouldn't be connected.

The PWRON pin of PMIC is an input signal to the IC that generates a turn-on event. When is asserted, starts the power-on sequence.

Best regards.