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Altera_Forum
Honored Contributor
17 years agoNot that I can recommend this to you but on my Stratix II GX designs that use Active Serial, I've gone ahead and connected it to the FPGA with the I/O voltage set at 1.8V and it's always worked fine.
The datasheet recommends you use a level translator. Remember of course that you are not required to use Active Serial for remote update. You can do passive serial or passive parallel but you have to have an intelligent external controller to program the FPGA.