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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

I wasn't aware of the differences between Cyclone III and Stratix III BLVD implemantation. The most recent Version of AN522 is telling how to:

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In Stratix III and Stratix IV devices, BLVDS interface can be implemented using 2.5-V

Differential SSTL Class I or II, depending on the current strength requirement.

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