Hi,
Hardware information: i.MX6Q USB: OTG
Android8.0.0 Linux 4.9.17
Hi zero
one can consider i.MX6Q SabreSD schematic p.11 spf-27392 L520
and compare custom board layout with reference design
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi igorpadykov
Thank you for your suggestion. We're checking it now.
And when I tried to change the U disk , the test found that the amplitude decreased,
as shown in the attached picture.
However, there was a waveform with very low amplitude in the first half of the waveform.
This part of the waveform doesn't feel normal.
My question is:
1. Is there any relationship between eye Diagram test and what U disk is inserted?
2. The waveform with very low amplitude in the first half of the attachment may be caused by what reason?
3. For eye Diagram test, do I have to reduce the amplitude below 400mV?
Thanks.