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

JTAG stopped working

When I try to download a program, I now get the error message "There are no Nios II CPUs with debug modules available which match the values specified. Please check that your PLD is correct...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Sorted.

Put a 10k pullup to 3v3 on the TDO signal, and slugged TCK with 33pF.

Given the problems I've had, does anyone think it's worth using a Schmitt buffer on the board to ensure no glitches appear on the TCK line?