EK-TM4C1294XL USB Circuit error

Yannick,

This question is hardware related and also not specific to TI-RTOS, so I went ahead and moved this thread over to the device forum in hopes that someone with expertise there can answer your question.

That being said, I did show your question to someone who has been getting up to speed on USB and they speculated that you might be getting confused between the two USB ports on the evaluation kit. One is use for the application and one is use for the Sitara Debug port: "U2" sounds like the debug emulation port.

Hello Yannick

The part TPD4S012 is a protection diode on which D+, D- and ID pins are for representation. While the schematic is wrong in terms of pin connectivity, the USB still shall work without any issues.

Regards
Amit

Hello,

thank you for moving the post, and also for the answer.

On my board the connector U7 is for OTG and the U22 is for Debug.

Regards,

Yannick Riou

Hello,

I checked, even if the pin connectivity is wrong on the schematic, the circuit on the physic board is (in my opinion) wrong. I checked with a multimeter for connection with th TPD4S012 (as a reference to know which pin is D+,D-, ID, etc.) and I found that the D+ and D- were swapped.

As I am possibly wrong, is it possible to have a correct schematic for the OTG module on EK-TM4C1294XL.

thank you in advance,

Best Regards,

Yannick Riou

Hello Yannick,

To be sure that we are on the same page, you are talking about the swap at component U2?

Regards
Amit

Yes on the connector U7 and component U2.