SD_WP and SD_CD IOMUX Setting

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

SD_WP and SD_CD IOMUX Setting

873 Views
pfsang
Contributor IV

hi, all

         when i read the SarbreAI souce about SD card, i have a question for iomux setting of USDHC.

         for example, the SD_CD pin connects with GPIO_1 pad in SabreAI.

          According to chip manual , the pad should be set to ALT6

         12219_12219.jpgsd_cd.JPG.jpg

           but in source, it set the GPIO_1 pad to ALT5

           like this:

               //SD1_CD

              MX6Q_PAD_GPIO_1__GPIO_1_1,

         i don't know what the difference between them is.

B&R

Labels (5)
0 Kudos
1 Reply

559 Views
igorpadykov
NXP Employee
NXP Employee

Hi fang

for CD,WP one can use these dedicated pins and

any GPIOs. Idea is well described in

Chapter 15 Adding Support for the i.MX53 eSDHC

MX53UG MX53SUG.book

Best regards

chip

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

0 Kudos