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Altera_Forum
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15 years ago

I/O standard:Different between 3.3V and 2.5V

Hi, In my hardware, I/O standard of most of the ICs connected to CycloneIII are 3.3V, but it also need LVDS connected to CycloneIII. It should to set the voltage of the bank to 2.5V which inc...
Altera_Forum's avatar
Altera_Forum
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15 years ago

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If power the bank with 3.3V, but set the I/O standard to 2.5v in QuartusII, does it mater?

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Yes, the LVDS I/Os are not guaranteed to work at this voltage. Possibly they can with reduce performance, but you can't rely on it, the operation is beyond the specifications.