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Basys 3, what cable to use with JTAG?


SethArnold

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Hello,

 

I am trying to interact with my Basys 3 board through the JTAG port on the board but I am not sure what cable to use with it. The cables listed for sale that I've seen, like the JTAG-HS2, say that they are not needed for Digilent FPGA boards. Is there a cable that is intended for use with the FPGA boards? 

 

Thanks,

Seth

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Hello,

Firs of all I mention that you don't need a JTAG cable to program the Digilent boards. They all provide an onboard USB-JTAG module, so you just connect the USB cable to the board and you can program the board. If you want, you can consider that the USB-JTAG cable is placed on the board.

To answer your question: If you choose to program the board using an external USB-JTAG cable, this is possible using the provided 6-pin JTAG header (J5). Any USB-JTAG cable will work. The statement that confused you only says that the cables are not necessary.

You can read more about this issue on the Basys3 reference manual, chapter FPGA Configuration

 

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