4 Replies Latest reply on Oct 31, 2014 7:20 AM by marco.bellin

    fx2lp and xhci (USB3.0) controllers problem

    davide.bozzato

      Hello,

         

      I'm using a fx2lp to acquire a stream of data coming from an image sensor. The transfer is bulk type.
      This device has always performed well on several old pc with USB2.0 controllers but now some customers are buying brand new pc with USB3.0 port and the things are getting bad...

         

      On the same pc the device works on USB2.0 ports but doesn't on USB3.0 ports. Apparently the problem is a limited throughput (!) that lead to an overflow on fx2lp fifo.

      We notice this behaviour on Intel and Renesas controller but we haven't tried other... we believe that are all the same.

      Any idea?

         

       

         

      Thanks a lot for your support.

         

      Dax