Could you help me check how to config tm4c1294kcpdt internal USB PHY driving strength?

Jefferey

Dear Experts

My customer wants to adjust the driving strength of USB PHY.

The datasheet indicates that Port pins PL6(D+) and PL7(D-) operate as Fast GPIO pads, but have 4-mA drive capability only.

Is there any register to config the driving strength?

Thanks for your comment.

0 Amit Ashara over 8 years ago

Hello Jefferey

That is in Digital Mode. The USB function is an analog function and is driven by a standard USB PHY.

0 Jefferey over 8 years ago in reply to Amit Ashara

Dear Amit

So do you mean the USB driving strength cannot be adjusted by register setting, right?

Thanks for your comment.

0 Amit Ashara over 8 years ago in reply to Jefferey

Hello Jefferey

Yes, that is correct.

Arm-based microcontrollers forum