Unused pin connection for uSDHC data pin

[ko-hey]

Hi all

I have a question about SDx_DATAx pin settings in i.MX6DL.

I plan to use SD card for boot.

SD card only use 4 bit. So I use only SDx_DATA0 to SDx_DATA3.

Does NXP have any recommendation for unsued pin connection ?

Also please let me know the register settings for unused pin.

Ko-hey

[Yuri]

Hello,

  Unused SDx_DATA[4-7] may be configured as GPIO, input, pulled up.

Note, this is default, Out of Reset state.

Have a great day,
Yuri

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[ko-hey]

Hi Yuri

Thank you for quick reply.

I understand it set as default.

How about pin connection ?

Do you recommend the pin connect to GND ? Or can I it to float ?

Ko-hey

[Yuri]

yes, the pins should be left floating.

~Yuri.

[ko-hey]

Hi Yuri

Thank you for your support.

I understand.

Ko-hey