3 Replies Latest reply on Jul 19, 2018 12:04 AM by aani

    GPIF PKTEND Signal no active in FX3

    l312361206_3478106

      Hi, everyone:

           I get a problem with FX3 GPIF port.

           According to my understanding,a P to U DMA manual Channel will commit data to Host in follow two conditions:

           1. one buffer filled

           2. PKTEND became low

       

           In my test, I control the PKTEND in FPGA, and the last data packet is not  equal to the buffer size , sometime HOST can receive the last packet, but sometime can not, until the buffer size that include the last packet filled with the next fram data packet. I am sure the FPGA prroutine  is fine, it seems like the FX3 didn't respond the PKTEND.

       

           Are there any suggestions? Or are there any other way to control the condition that commit data?