1 Reply Latest reply on Mar 20, 2013 12:31 AM by ramav_01

    PIB interrupts

    jon.bean

       I have a design with a USB OUT sending data to a p-port consumer. Its in auto dma mode. I decided to add the PIB interrupt code from the Designing with the EZ-USB® FX3™ Slave FIFO Interface app note to check that there are no errors. When I ran the design I am getting CYU3P_PIB_ERR_THR0_RD_UNDERRUN errors. The thing is I am not using thread 0 as the consumer is on thread 3. Anyone know why this would occur?

         

       

         

      Thanks

         

       

         

      Jon

        • 1. Re: PIB interrupts
          ramav_01

          Hi Jon,

             

          This issue might be due to the mishandling of address lines.

             

          Are you driving the address lines to select the thread 3?. May be you are driving 0 on those lines and trying to read data from the thread 0. Please check.

             

          Thanks,

             

          Sai Krishna.