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Altera_Forum
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13 years ago

Cyclone III 3.3V LVTTL output only at 2.5V

Hey all, I'm using the Cyclone III (EP3C120F780C7) DSP development kit and would like to use 3.3V LVTTL outputs on the right HSMC header using the provided breakout board. The I/Os I'm using ar...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

If the supply voltage, or VCC, to those banks is 2.5V then that is what you are going to get on the output. Even if you change it in Quartus.

I have the Cyclone III development kit and I believe banks 5 and 6 are at 2.5V. You can check the schematic for yourself.