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Altera_Forum's avatar
Altera_Forum
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17 years ago

LVDS tristating usage

Hello, 1. Could anybody suggest whether ALT_OUTBUF_TRI_DIFF can be used at the moment? I was trying to select Cyclone III, Stratix IV - and it looks like this primitive does not supported at ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

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but did not find something proper

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???

The said application note instructs you to build a bus LVDS with Cyclone III. Your problem may be different, but you didn't clarify in which regard. As said twice now, tristating a receiver seems meaningless.

If you are possibly referring to dynamical switched termination resistors, they are not provided with Cyclone III. And they won't be useful with bus LVDS anyway, because it's based on a end terminated party line.