Q[translated by Google]:
imx6q can not identify U disk, then usb mouse can be identified:
PCB must do 90 ohm impedance? What is the reason for this?
A:
Hi 小辉哥
yes reason may be poor signal, note mouse is detected as low speed device.
One can look at AN4589 Configuring USB on i.MX6 Series Processors
sect.4.3.3 Operational settings for settings to tweak signal
https://cache.nxp.com/docs/en/application-note/AN4589.pdf
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
