5 Replies Latest reply on Aug 25, 2017 10:29 AM by jafoste4

    USB-JTAG Unusable

    gaochangw

      Hi,

      I am using the MMP baseboard 2 with Zynq MMP XC7Z100 Rev.C. The board can be booted by SD card but the USB-JTAG on the baseboard is unusable. I always fail to program the bitstream to the board by USB-JTAG in Xilinx SDK. I couldn't find any instruction about enabling the USB-JTAG in the manuals. Is there anything I have to do before using the USB-JTAG? Thank you very much.

      Best,

      Chang

        • Do you have a jumper
          npoureh

          Do you have a jumper installed on the Baseboard JP2 pins 2-3?

            • Yes
              gaochangw

              Hi,

              Thanks for you reply. Yes, I connected JP2 pins 2-3 but did not work.

              I actually have another customized baseboard with the same USB-JTAG module, which works well. So I am really confused by this 'original' baseboard.

            • Hello Change,
              jafoste4

              Hello Change,

              Did you follow these guidelines in setting up your MMP with your PC?

              --Josh

                • Yes
                  gaochangw

                  Hi Josh,

                  Yes, I did exactly the same thing except I don't have SW13 and SW14 switch on my baseboard (maybe it's not Rev. B? ). I tried it again but still unable to use USB JTAG. BTW, how do you confirm the number of pins. For example, for JP2, how can I know which two pins are 2-3 or 1-2? I checked the manual but it doesn't show this. Thank you very much.

                  Best,

                  Chang

                • Hello Chang,
                  jafoste4

                  Hello Chang,

                  Excellent question, if you look at the silk screen around the jumper you will notice it is not a perfect rectangle, there is a corner that is angled. The jumper closest to that angled edge is considered pin 1.

                  So in the case of JP2:

                  Pin 1 = FMC

                  Pin 2 = TDO

                  Pin 3 = MMP

                  --Josh