How to test USB eye diagram on i.MX8M?

[charleshuang]

Hi , we want to test USB eye diagram on iMX8M

But we don't know how to test , we have already seen this link i.MX6Q/eye pattern of USB HS1 setup 

We have tried the register (DCTL)

＃./memtool -32 0x3810c704=0x00F00008

but it's not work for us and evk board.

We want to force to output Test Packet , how to do this ?

thanks

[Yuri]

Hello,

  I've sent You a preliminary document, hope it helps.

Have a great day,

Yuri.

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[jonas_blick]

Hi Yuri, 

Im trying to do this as well, can you send me the document/patch also?

Thank you!

[Yuri]

Hello,

  I've sent You message directly.

Regards,

Yuri.

[ktim_chen]

Hi Yuri,

I have the same question, could you send the document to me?

Thank you.

[Yuri]

@ktim_chen 
Hello,

   Use app note AN12409 (i.MX6/7/8 series USB Certification Guide)

https://www.nxp.com/docs/en/application-note/AN12409.pdf

Regards,
Yuri.

[tsmt]

Link is invalid, is it possible that NPX provides an i.MX8 series USB certification guide

[mayqueen]

We're almost mass production but face USB eye diagram testing problems on IMX8MP/IMX8MM, and I check this link already invalided, could you provide a new link to me? Thanks a lot