Register setting and voltage supply of NVCC_USB_H

[ko-hey]

Hi all

Please teach me the register setting and voltage supply of NVCC_USB_H.

I understand that NVCC_USB_H can be connected to I2C power rail from following thread.

I guess it's same as case of using GPIO.

Question, i.MX6SoloX power design 

I want to use "USB_H_DATA" and "USB_H_STROBE" pin as 1.8 V level GPIO.

According to the table 10 of IMX6SXCEC, the NVCC_USB_H pin specification is as below.

Do I need to set the register when I use "USB_H_DATA" and "USB_H_STROBE" pin as 1.8 V level GPIO ?

Ko-hey

[joanxie]

this table is correct, you can set register as table shows.

[ko-hey]

I know the table is correct.

My question is do I need to set the DDR_SEL field of IOMUXC_SW_PAD_CTL_PAD_USB_H_DATA register to "11” when I use the pin as a 1.8V GPIO ?

I can't understand that why the pins related to the DDR.

Ko-hey

[ko-hey]

joanxie‌

Could you follow the above question ?

Ko-hey