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Altera_Forum
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18 years ago

Stratix III wierd JTAG Config problem

I've got 2 Stratix III devices in a JTAG chain. If I power the board, I can scan the chain OK and program repeatedly but as soon as I switch off the power and re-apply, JTAG no longer works. i...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Due to the die shrink, Stratix III I/O voltage must be <= 3.0V for JTAG Configuration to work stable.