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Altera_Forum's avatar
Altera_Forum
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15 years ago

cyclone II differential IO error

Hi, I have an LVDS transmitter and LVDS receiver in my design and i am getting below error when i do systhesis. "Input port DIFFERENTIALIN can only connect to output port DIFFERENTIALOUT o...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Hi,

I have an LVDS transmitter and LVDS receiver in my design and i am getting below error when i do systhesis.

"Input port DIFFERENTIALIN can only connect to output port DIFFERENTIALOUT of another IO atom"

I have also attached the file in which it is giving this error.

Thanks,

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Goto Assigment -> Pin planner. Select that you signal is LVDS. Connect positive and negative signals to pins.