JTAG Connection - JTAG Connection Hi. How do I connect the JTAG pins? I forgot to put a pull-up resistor on the board where I mounted the FPGA. What kind of problems will occur if there is no pull-up resistor? The circuit configuration is as follows. Board A: FPGA mounted, no JTAG connector Board B: JTAG connector mounted, with pull-up resistor. Board A can work without Board B. Replies: Re: JTAG Connection Hi. Thank you for your answer. I now understand that there could be a problem with the program. I will fix the circuit. Best Regards. Replies: Re: JTAG Connection Hi Yuto, For cyclone 10 LP, you may refer to pin connection guideline at link below: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone-10/pcg-01021.pdf It would be better if you could follow the guidelines as stated for JTAG pin. The potential problem might be happening is on programming part. Thank You. Replies: Re: JTAG Connection Hello. Thanks for your reply. I use Cyclone10 LP. After I finished designing the circuit, I noticed a mistake. I would like to know what kind of problem will occur if there is no pull-up resistor on the JTAG pin. I am worried if I can proceed with the debugging until I rebuild the board. Best Regards. Replies: Re: JTAG Connection Hi, May i know which FPGA series are you using? Also, the pull up you are referring to which pin? For your information, you may refer to our pin connection guidelines: https://www.intel.com/content/www/us/en/programmable/documentation/lit-dpcg.html Thank You. Regards, Bruce