Electronics > Beginners
How to debug a USB 3 connection?
Jackster:
Hi all
I have a circuit board that I freelanced out the design of.
Had it made and got a pro to solder the USB type C plug and socket on for me (0.5mm pitch I wont touch xD)
The board extends the USB Type C socket about an inch from the plug.
I can get it to work in USB 2 mode but not USB 3.
Sometimes I can get the board I soldered to work in USB 3 but this is very rare.
What are my options here to debug this and find out what is going wrong?
Thank you
Jack
ogden:
Seems you have signal integrity problems. If you can - show schematics (at least part in question) and photos of PCB, both sides. Provide links to info/docs of chip used. If you copied (part) of some existing board like devboard of USB chip - mention it as well.
wraper:
USB 3 will work even is there is a few cm of wiring on 2 layer board without any impedance matching. Although in such case it will become a radio transmitter killing bluetooth, wifi and wireless mouses nearby. So without giving specifics of that board, it's hard to say why it does not work.
Jackster:
USB Socket top of board Würth Elektronik 632723300021
USB Plug bottom of board Würth Elektronik 632712000021
Board is 4 layer, the middle 2 are ground only.
Also to note, if I flip the cable from the socket to my PC, nothing works at all. No USB 2.
wraper:
There might be other errors but on first glance I found this. Those are simply not connected.
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