Does USB OTG Require Pullup on DP line?

Rogers.Gary · ‎2015-11-01

Posted on November 02, 2015 at 05:02

Does the Discovery board use pull-up or pull-down resistors on the USB OTG?

Schematic says it doesn't, the USB standard says it's required.

Any guesses?

Thanks...

Amel NASRI · ‎2015-11-10

Posted on November 10, 2015 at 12:07

Hi roofie01,

There are internal pullup available within the USB peripheral. So there is no need to add external ones.

This what explains why you don't see them in discovery board schematic.

-Mayla-

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