Issue building custom board with RP2040. (Board partially recognised by Windows)

[SiliconWizard]

Yes it's a 12V TVS so not that well adapted here. But note that regarding the highish capacitance (as it was mentioned earlier), it was unlikely the issue. The RP2040 is USB Full-Speed only and from the specs, you're allowed up to 100pF of capacitance on the data lines in FS (AFAIR) - actually you may sometimes see recommendations of adding some small capacitors on D+/D- for USB FS to limit EMI, although the series resistors should be enough for that purpose.

A very low capacitance is only required for USB HS and above.

[krho]

Seems that I forgot to connect B6 and B7 pins of the 16 pin USB C connector and hence, I think it contributes to the issue as well. I cannot possibly solder wires to it. So, I now have 2 queries, Since I have effectively designed the board in such a way that the USB C only works in one configuration of the cable, should I get rid of the SM712 and interchange the data lines?

You should connect A6 to B6 and A7 to B7. Then the connector will work both ways.

[atulravi]

Yes it's a 12V TVS so not that well adapted here. But note that regarding the highish capacitance (as it was mentioned earlier), it was unlikely the issue. The RP2040 is USB Full-Speed only and from the specs, you're allowed up to 100pF of capacitance on the data lines in FS (AFAIR) - actually you may sometimes see recommendations of adding some small capacitors on D+/D- for USB FS to limit EMI, although the series resistors should be enough for that purpose.

A very low capacitance is only required for USB HS and above.

Yes it's a 12V TVS so not that well adapted here. But note that regarding the highish capacitance (as it was mentioned earlier), it was unlikely the issue. The RP2040 is USB Full-Speed only and from the specs, you're allowed up to 100pF of capacitance on the data lines in FS (AFAIR) - actually you may sometimes see recommendations of adding some small capacitors on D+/D- for USB FS to limit EMI, although the series resistors should be enough for that purpose.

A very low capacitance is only required for USB HS and above.

Very interesting. In the next iteration, I shall consider some capacitors on the Data lines maybe.

[atulravi]

Seems that I forgot to connect B6 and B7 pins of the 16 pin USB C connector and hence, I think it contributes to the issue as well. I cannot possibly solder wires to it. So, I now have 2 queries, Since I have effectively designed the board in such a way that the USB C only works in one configuration of the cable, should I get rid of the SM712 and interchange the data lines?

You should connect A6 to B6 and A7 to B7. Then the connector will work both ways.
[/quote]
So if I were to connect only A6 to B6, it should work in one direction alone right? (Considering the A7 is already connected and B6 is already connected)

[krho]

https://www.eevblog.com/forum/projects/usb-type-c-(usb2-0)-wiring/