Compute Module • Re: CM4 flashing on custom carrier board - USB device not recognised.

Good morning,

Thanks for your reply.

I'm sorry, I am unable to share publicly full schematics, but here is the schematic overview that connects all of the USB together.

J3 passes from the right, into the MUX (U14) and into the CM4 on the left.

Image may be NSFW.
Clik here to view.

And the layout of the USB is as follows. 90ohm impedence matched traces. 6L SIG-GND-PWR-PWR-GND-SIG.

Image may be NSFW.
Clik here to view.
Image may be NSFW.
Clik here to view.

Statistics: Posted by danedwards_ee — Wed Apr 10, 2024 6:22 am

---