USB on i.MX6UL without external +5V

[jsopenrb]

Is it possible to run USB in host-only mode without +5V on USB_OTGn_VBUS? Can we power internal USB block with +3.3V?

[igorpadykov · Accepted solution]

Hi J

yes, for correct operation of USB module, LDO_USB should be

powered with USB_OTGn_VBUS with value 4.4-5.5V according to

Table 10. Operating Ranges i.MX6UL Datasheet

http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6ULCEC.pdf

Best regards

igor

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