VDD_SNVS_DIG is 0(low)...?

[972794]

when SNVS_IN and SNVS_ANA is high in custom board but VDD_SNVS_DIG is 0 could you help us to make high 

[RaRo]

Hello @972794,

Just for double check, are you using an RT1170? If not, could you please tell us which microcontroller are you using?

Also, have you checked the Hardware Development Guide for the MIMXRT1160/1170 Processor? If not, could you please take a look to it? It could be helpful.

Best regards, Raul.

[972794]

I am using MIMXRT1176CVM8A this processor

[RaRo]

Hello @972794,

i.MX RT1170 Crossover Processors Data Sheet for Industrial Products mentions that the power rail VDD_SNVS_DIG is controlled by software:

[IMXRT1170IEC. Section 4.2.1.1. Power-up sequence]

You could turn on and off the power rail by software with function PMU_SnvsDigLdoInit and PMU_SnvsDigLdoDeinit of driver fsl_pmu.c in the MIMXRT1176's SDK which you could download it here: Welcome | MCUXpresso SDK Builder.

Best regards, Raul.