Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

JTAG issues after 5.1 SP1 and Flash Programmer

Hello all, I've read several posts concerning JTAG Downloading issues. I have a custom EP2C8 board that I've had similar if not the exact same issues as others here have described. On...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

After reading other posts about adding series resistors to clock lines, I changed my JTAG resistor pack from 10K to 1K. I can now successfully program the EPCS4 using the IDE's Flash Programmer. After looking at the signals more closely with a scope, I noticed that they weren't going up to 3.3V like they should. So I thought a stronger pullup on the lines might help. It seems to have worked for me.