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Altera_Forum
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17 years ago

Stratix III LVDS OCT

Hello! I am using stratix III and I have a few questions about LVDS and OCT in stratix III and I/O buffers. 1. If we want to use dynamic termination, can we use differential mode? a. ...
Altera_Forum's avatar
Altera_Forum
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17 years ago

> Pseudo-differential operated single-ended buffers with serial termination have to be used instead.

I have a similar problem: The Synthesis reports:

Warning: Pin OUTPUTp[0] must use pseudo-differential I/O standard -- the Fitter will automatically assign LVDS_E_3R pseudo-differential I/O standard to pin

And later it says:

Error: The differential I/O standard LVDS_E_3R cannot be used on the pin OUTPUTp[0], because the specified pin uses a tri-stated output buffer.

How do I have to setup these pins in the assignment editor?