About IOMUX of i.MX6

[宗標廖]

Hello Community

About pin config of i.mx6, I have two questions.

Q1:

Only pad that used for input can have pull-up resistor, pad that used for output cannot have pull-up resister.

Is it right? why?

Q2:

For Pad Control Register(e.g. IOMUXC_SW_PAD_CTL_PAD_CSI0_DATA18),what does Keeper Enabled mean?

What is Keeper?

Best Regards,

ZongbiaoLiao

[Yuri · Accepted solution]

Hello,

the following app note helps to setup pin’s electrical properties.

“Influence of Pin Setting on System Function and Performance”

http://www.nxp.com/files/32bit/doc/app_note/AN5078.pdf

Regards,

Yuri.

[宗標廖]

Yuri

Thank you!

[igorpadykov]

Hi ZongbiaoLiao

1. output also can be configured with pull-up resister

2. keeper functionality is explained on

Bus-holder - Wikipedia, the free encyclopedia

Best regards

igor

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[宗標廖]

Hi Igor

Thank you for you reply.

So there is no relationship between pull-up and the direction of pad.Right?

Best Regards,

ZongbiaoLiao

[igorpadykov]

yes right

Best regards

igor