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About USB_H1_VBUS and USB_OTG_VBUS in i.MX6DQ.

Question asked by Keita Nagashima on Jun 30, 2016
Latest reply on Jul 12, 2016 by CarlosCasillas

Dear All,

 

My customer will use USB OTG and Host1 in i.MX6DQ.

 

[Q1]

Refer to "PMU_REG_3P0 field descriptions" in IMX6DQRM(Rev.3).

"VBUS_SEL” bit can select input voltage source for LDO_3P0 from either USB_H1_VBUS or USB_OTG_VBUS.

 

Is it both need input power of  USB_H1_VBUS and USB_OTG_VBUS?

(i.e. If either is inputted, is power supplied to both of Host1 Phy and OTG Phy?)

 

[Q2]

If good in either input USB_H1_VBUS or USB_OTG_VBUS, Why does two VBUS ports exist?

 

Best Regards,

Keita

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