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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
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13 years ago

Hi FvH!

I solved my problem. The issue is that I used the DiffCLK Pins for the input of my Outputted Data Clock out of my ADC board.

What I should have used instead is a regular Diffio pin.

So after changing the pins to the regular diffio pins, U27,U28 for example and setting the I/O Standard to LVDS. it compiled fine.

Well time to get out the soldering iron! and hack my board.

:cry:

Thanks.

Mike K