If the NVCC_xxx supply can be combined with VDD_HIGH_IN and VDD_SNVS_IN in IMX6ULL designs

[vadimaleynikov]

Does the NVCC_xxx supply can be combined with VDD_HIGH_IN and VDD_SNVS_IN in IMX6ULL design?

[igorpadykov]

Hi Vadim

this is not allowed as datasheet sect.4.2.1 Power-Up Sequence requires 

VDD_SNVS_IN supply to be turned on before any other power supply.

i.MX 6ULL Applications Processors for Consumer Products

Best regards
igor
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[Rodrigue]

HI Igor,

Is there any reason why it differs from the i.MX6UL where both supplies can be tight together?

br,

Rod

[igorpadykov]

Hi Rod

>Is there any reason why it differs from the i.MX6UL where both supplies can be tight together?

I thnk it has similar design as i.MX6UL and the same power-up sequence.

Best regards
igor

[Rodrigue]

Then which one is right? 6UL or 6ULL?

And then we have to correct the Datasheet

Br,

Rod

[igorpadykov]

Hi Rod

I think both are right.

Best regards
igor