--- Quote Start ---
But my main concern is about the electrical conflict: whill the FPGA burn? Is there some kind of protection? Maybe limit the output current or things like that? Because I really can't afford to loose the FPGA...
--- Quote End ---
Use a series current limiting resistor. For example, consider a 3.3V high driven onto one side of the resistor and a 0V low on the other. The current being drawn is then I = 3.3V/R. If you want to limit the current for the buffers either side of the resistor to say 5mA, then you need a resistor R = 3.3/5mA = 660-Ohms.
A 1k-Ohm series resistor will limit the current just fine.
Cheers,
Dave
Honored Contributor
