Forum Discussion

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

LVDS pins next to a 2.5 volt pins

Greeting, I am getting an error telling me I cannot put an LVDS pin next to a 2.5 volt pin that will be responsible for and fault LED blinking. Is there any way to get around this or is there a way t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If you come to conclusion that the single ended output won't disturb LVDS operation, e.g because it's not switching at times when the LVDS is active, you can assign a toggle rate of "0 MHz" to the pin, and it's ignored in pin placement rule check. A reasonable example is e.g. a configuration EEPROM of a DDRRAM module, that's read in before RAM operation starts.