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Altera_Forum's avatar
Altera_Forum
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10 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
10 years ago

You can look into the SIV device datasheet, "I/O Standard Specifications" section to find out the VIL and VIH threshold voltages to determine the logical levels.