Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Set GPIO pins with multiple voltage levels

Hello, I am using a DE0-Nano FPGA and Quartus II 14.0. I am able to set the voltage of GPIO pins to either a high or low value based on a binary string of 0s and 1s. However, I would...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

sstrell correctly emphasized that the FPGA pins are purely digital. To generate other voltage levels than "0" (GND) and "1" (VCCIO, you need external analog circuitry, e.g. resistor networks or filters when utilizing modulation. Respectively there's no thing like a mixer block.