Forum Discussion
Occasional ContributorIntel Agilex F-Series dev kit cant be programmed by JTAG
Hi,
thanks a lot for your help! We've fixed this issue now. One thing we'd like to share, for a potential future reader, is that in addition to the above mentioned article one needs to completely erase the flash prior to configuring. Our working solutions looks like the following:
- Power off the board. Waiting for the caps to be drained doesn't seam to be necessary.
- Set MSEL[2:0] to ON/OFF/OFF
- Power on the board.
- Erase the boards flash using the programmer tools
- Power off the board.
- Set MSEL[2:0] to OFF/OFF/OFF
- Power on the board
- Programm your *.sof file.
It's also required to leave the JTAG chain in the default configuration while erasing the flash. Last but not least: If step 8 fails retry a couple of times until it stops failing (we usually don't need more than 3 tries). It also seams to be more reliable (programming fails less often) at 24MHz than 6MHz, which the programmer defaults to anyway.
Regular ContributorHi
I suspect your TCK frequency might be the root cause here.
Can you kindly try to reduce your TCK frequency to 6 MHz (default value)?
Below link is the command to change TCK frequency (on page 14= "2.8. Changing the TCK Frequency")
Kindly try it out with your design and let me know the result.
Thanks
leondietrichHi, thanks for your answer. We already tried 1MHz, 6MHz, 12MHz, 24MHz both by changing it within the GUI and the command line tools (al dough we didn't tried 12MHz on Ubuntu). Unfortunately none of these combinations worked.
