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Altera_Forum's avatar
Altera_Forum
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11 years ago

Use different voltages on GPIO

Hi, Small summary: I am using GPIO ports on a Stratix-IV based board to interface it with a PCB that has an optical switch. I am using the GPIO ports to dynamically control the switches, by app...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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Thanks for your reply!

If you please, could you give me a bit more explanation on that? I know how to set the default voltage for the pins, on the Pins Planner, but how would I set two different voltages, one for logical 0 and one for logical 1?

I am using a High global tech board, Stratix IV, device EP4S100G2F40I2.

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You should check on the IO specs requirement between the two devices that you want to interface with. For example, check on the interface partner of the SIV device. Determine the IO standards or IO specs. Then cross check with the device datasheet and select one that is compatible or meet the partner's specs.