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Altera_Forum
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13 years ago

Possible to set Cyclone IV GX differential I/O pin to 3.3 Volts?

I have a Cyclone 4 GX Development board, and I would like to set the Clock input on on Bank 5, Dedicated Clk input on pin T29 and T30 to differential I/O 3.3V. Yes..... you are right in asking ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

1. There's no problem to drive inputs in a 2.5V bank with 3.3 V.

2. I wonder which IO standard is involved with "3.3 volts differentially". I would expect a LVDS standard. It's voltage levels are independent of the driver supply voltage.