i.MX Processors中的主题 Re: The USB not recognized

The USB not recognized

937556508 — Thu, 15 Oct 2020 11:14:38 GMT

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.

Re: The USB not recognized

937556508 — Thu, 15 Oct 2020 11:20:42 GMT

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.

Re: The USB not recognized

igorpadykov — Fri, 16 Oct 2020 00:48:30 GMT

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

Re: The USB not recognized

937556508 — Fri, 16 Oct 2020 12:00:35 GMT

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