What pull PMIC_ON_REQ signal up when i.MX6 PMIC_ON_REQ is low?

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What pull PMIC_ON_REQ signal up when i.MX6 PMIC_ON_REQ is low?

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satoshishimoda
Senior Contributor I

Hi community,

I want to confirm about i.MX6 PMIC_STBY_REQ behavior.

Actually, PMIC_STBY_REQ of i.MX6D is tied to STANDBY pin of MMPF0100 on our custom board.

And PMIC_STBY_REQ line is changed to high level when i.MX6D is in low power mode and PMIC_ON_REQ (tied to PWRON pin of MMPF0100) is low.

Then, I want to know which chip (i.MX6D or MMPF0100) pulls PMIC_STBY_REQ line to high.

Could you let me know it?

(e.g. i.MX6D SNVS pulls the line to high, MMPF0100 internal pull-up resistor changes it high)

Best Regards,

Satoshi Shimoda

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Yuri
NXP TechSupport
NXP TechSupport

PMIC_STBY_REQ is i.MX6 (actively driven) output. No need for pull up resistor, as for open drain signals. 

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Yuri
NXP TechSupport
NXP TechSupport

PMIC_STBY_REQ is i.MX6 (actively driven) output. No need for pull up resistor, as for open drain signals. 

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satoshishimoda
Senior Contributor I

According to your reply, PMIC_STBY_REQ signal is always controlled by i.MX6, also in this case.

Is this right?

Best Regards,

Satoshi Shimoda

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Yuri
NXP TechSupport
NXP TechSupport

Yes, let me remind the PMIC_STBY_REQ belongs to VDD_SNVS_IN (always ON) power group.

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satoshishimoda
Senior Contributor I

Hi Yuri,

OK, I understand.

Thank you for your cooperation!

Best Regards,

Satoshi Shimoda

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satoshishimoda
Senior Contributor I

Can somebody reply me?

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