USB supplied while i.MX6 is off

[electricar]

Hello,

am I getting this right, that it's not a problem when the USB ports of the i.MX6 are powered from another device while the i.MX6 is off (not powered)?

Thank you very much in advance.

Kind regards

[igorpadykov · Accepted solution]

Hi

you are right, i.MX6DQ Datasheet sect.4.2.1 Power-Up Sequence describes:

USB_OTG_VBUS and USB_H1_VBUS are not part of the power supply
sequence and can be powered at any time.

http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf

Best regards
igor
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