USB termination resistors

4 thoughts on “USB termination resistors

  1. What is the recommended value for the USB data lines termination resistors?

    The hardware reference guide states the are internal pull up and pull down resistors,

    are external termination resistors required ? the distance from the connector to the controller  in my app is aprox 80mm. 

    1. The UC864 EVK2 interface board has no resistors so you should be fine without them I suppose.



      1. Hi Cosmin,


         Thank You, By the way thru the USB port I have access to the same logical interfaces as

        with the GC864, I´m  designing a board to support both models?