Imx6 power on sequencing

[vvjay]

Hi,

   In <i.MX Hardware Design Guide and Board Bring up> page31, it says Power on sequencing: VDD_SNVS_IN<=VDD_HIGH_IN<=any other power supply, but in <SPF-27516.pdf> page 19, MMPF0100F power on sequencing doesn't meet the requirement. VDD_HIGH_IN is the 11th. Does it matter? And if VDD_SNVS_IN is not the first power on, will the board not bring up?

Wenjie

[igorpadykov]

Hi Wenjie

recommended to follow power-up sequence defined in Datasheet for

each processor, as it is most last to date and frequently updated document.

SPF-27516 was designed on early processor development and may have inaccuracies.

Yes sequence VDD_SNVS_IN<=VDD_HIGH_IN .. is important for successful boot.

Best regards
igor
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