The USB not recognized

[937556508]

Hi,

We use the MIMX8MM5DVTLZAA chip to carry the circuit design. Now the USB1 interface used to download the image is not recognized. Can you help me?

We are designing with reference to the USB2 circuit of the 8MMINILPD4-EVK development board. The following figure has additional circuit diagrams and unidentified signs. and the PIN of USB1_ID is NC.

[937556508]

I'm very sorry that my description looks a bit confusing, let me reorganize it.

We use the MIMX8MM5DVTLZAA chip to carry the circuit design. Now the USB1 interface used to download the image is not recognized. Can you help me?

We are designing with reference to the USB2 circuit of the 8MMINILPD4-EVK development board. The following figure has additional circuit diagrams and unidentified signs. and the PIN of USB1_ID is NC.

Best regards.

[igorpadykov]

Hi 937556508

one can recheck usb connections using checklist in

i.MX 8M Mini Hardware Developer’s Guide

try to test it for example in linux, booting from  sd or emmc. For preparing boot

image try sect.4.3.2 Copying the full SD card image i.MX Linux User’s Guide​

Best regards
igor

[937556508]

Hi igor

Thank you very much for your reply.

I checked my circuit and think it is ok.

My board only has emmc boot, and there is no emmc card slot, so I have no way to download the boot image to emmc in advance.

Do you have other ways to help me?

In addition, I use the USB-type-C interface, is it a type-c problem?

Looking forward to your help.

Best regards