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i.MX8M Mini EVK SD Card Detect pin

Question asked by Fernando Lopes on Jan 8, 2020
Latest reply on Jan 9, 2020 by igorpadykov

Hi,

I am designing a custom board with i.MX8M Mini and it will need to boot from an SD-Card.

 

The EVK uses the SD2 interface for SD. But on the EVK, the "Card Detect" signal is connected to the pin GPIO1_IO15 instead of the pin SD2_CD_B and I could not understand why. So I have the following questions:

 

1. Why isn't it connected to the SD2_CD_B pin? 

2. Can I use the SD2_CD_B pin for "Card Detect" signal on my design?

3. Does the boot ROM need the CD signal?

 

Thanks.

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