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i.MX7D PMIC_ON_REQ power on level

Question asked by Toshishisa Sugiyama on Oct 3, 2019

Hi, Aurtur,

 

I tested PMIC_ON_REQ state of i.MX7D with SABRE board. 

I removed R350 that connected to PMIC_PWRON from Rest IC (TPS3808) output to see behavior of PMIC_ON_REQ out put when ONOFF input level.

PMIC_ON_REQ became always high when main power is up. You mentioned  when tamper pin is low, PMIC_ON_REQ should be low according to i.MX7 Reset/Power-up from SVNS without button .

However, I set all tamper pins are low, but PMIC_ON_REQ became high when main power is up.

Does tamper pins are affected for PMIC_ON_REQ behavior?

 

Best regards,

Sugiyama

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