Forum Discussion

New Contributor

7 years ago

TDI pin seems to be pulled down and FPGA is not programming.

Hello, I use EP3C16Q240C8N FPGA on our custom board. I have been working on the same board more than one year. Last week one of my board gave an error and I could not program this board anymore. I ...

ShafiqY_Intel

Frequent Contributor

7 years ago

Hi,

Since you are able to make it working properly with EPCS4, your FPGA still okay. However, I suspect your JTAG connection is not working properly.

If I got extra information regarding to this issue, I'll get back to you.

In the meantime, can you check all of your JTAG connection pins (TCLK, TMS, TDI,TDO)? Please follow the pin guideline below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/cyclone3/pgc-01003.pdf

Forum Discussion

TDI pin seems to be pulled down and FPGA is not programming.

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