Are there any constraints to setting the DP_EN?

[rmeyer_arrow]

The Ref Manual says it is only configured on a LP_POR_B, which I can’t find any info on.

Does this mean that the DP_EN bit in the SNVS_LPCR as to be set  the first time that the register is written to.

Does it have to be set within a certain time frame from the first on.

Can it be set then cleared then set again?

Can it be set after something else has been written to that register?

[igorpadykov]

Hi Rick

please look below at example with DP_EN and security document

explaining SNVS in more detailed way.

Q&A: How is mx6 PMIC_ON_REQ under SW control?

Best regards

igor

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[rmeyer_arrow]

Yes I have seen that one and that is my problem there is not delay between the button press and the PMIC_ON_REQ line assert.

[igorpadykov]

Hi Rick

I am afraid there is no more info regarding this subject.

Best regards

igor