1 Reply Latest reply on Jun 15, 2016 5:55 AM by madhul_36

    FPGA SlaveFifo problems



         I use AN65974 to communicate FPGA with USB3014 . 


      GPIF parameter :


       sync slavefifo 、32bit、flaga is current_thread_dma_ready ,i have a counter about write data number,so i do not use flagb.




      buffer size = 16384bytes  ,DMA Count = 8(p to u)




      I read data from FIFO(fpga),then  write data to usb3014 fifo.




      But I have some problems :


      1.when i use "USB Control Center " ,click "transfer data-in",i can receive right data without PIB ERROR.


      2.But when i use "C++ streamer", click "start",i will see "CYU3P_PIB_ERR_THR0_WR_OVERRUN " in UART GUI.


      i want to know why .