Forum Discussion

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

jtag and altera max 3000 on epm3064

hi i have made an jtag interface because i want to program an altera max 3000. The quartus programmare show me a generic error "unknown integrity checking failure". where do i start for debug ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Particularly missing or too high resistance TCK pull-down is often causing problems. Some Altera devices have an additional internal weak pull-down resistor, but it's not said in the MAX 3000 datasheet.