EVAL-SCS001V1 USB Data lines

[Circuit]

Hi

In this 

EVAL-SCS001V1 Board

I want to connect this board to my STM32F767ZI, BUT Data lines D+/D- on Its USB-C Connector are not connected to any test point. Is there any workaround this? I can solder wires to for example A side of this connector(D+/D-) but then B side will be left unconnected. I can live with the fact that USB CABLE will work in only 1 orientation when inserted in USB-C Receptable but i am unsure of any other consequences that it will cause? Power delivery contracts/CC1/2, etc.. 

I know ST offers another Development board STEVAL-ISC005V1 where these signals are available but don't need so many Voltage Outputs and EVAL-SCS001V1 fits perfectly.

[Peter BENSCH · Accepted solution]

On the EVAL‑SCS001V1 the USB‑C connector is intended only for power‑delivery, not as a USB data port, which is why D+/D- are not brought out. In principle you can solder to one side’s D+/D- pads and accept that the plug will only work in one orientation; the CC pins handled by the STM32G0 on the board will still negotiate the PD contract, and leaving the other D+/D- pair unconnected does not affect PD itself.

However:

• You would need very short, well‑routed wires to have any chance of reliable USB signalling
• The board was not designed or EMC‑qualified for this use, so ST cannot guarantee signal integrity or compliance
• For a supported USB connection, STEVAL‑ISC005V1 (or a separate USB connector on your STM32F767ZI board) is indeed the recommended tool

So: your workaround may function for lab experiments, but it is a hack and not recommended for a final design.

Hope that helps?

Regards
/Peter