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Altera_Forum
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15 years ago

DCLK and DATA0 connected to LVDS output instead of floating

The Cyclone II handbook says that after programming, the DCLK and DATA0 inputs should not be left floating and should therefore be connected to a logic high or low. However, it also states that th...
Altera_Forum's avatar
Altera_Forum
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15 years ago

without going into the specifics of these two pins requirements, in general I will apply the rule of unused pins to them once their use is over, hence the same options for unused pins apply: either ground them or tristate them if applicable. Keeping pins as floating converts them to mini-aerials picking up frequencies and increasing the noise...at least that is what I am told...