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Altera_Forum
Honored Contributor I
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What is an LVDS board and what does it do?

Trying to isolate a fault between a logic board and LVDS board, need to know what function an LVDS board performs? Anyone help me please?

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Altera_Forum
Honored Contributor I
123 Views

I don't konw

Altera_Forum
Honored Contributor I
123 Views

 

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Trying to isolate a fault between a logic board and LVDS board, need to know what function an LVDS board performs? Anyone help me please? 

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It would help if you could post a link or some details on the LVDS board. 

 

If the board contains only level translators, then its probably just converting from single-ended LVCMOS to LVDS. 

 

To debug the problem, use a scope and generate toggles on each of your single-ended signals. Follow the traces to the LVDS board, and see if the outputs are toggling. 

 

If the outputs are failing in groups, check the output-enables on the LVDS buffers. I use parts from National Semiconductor that are 9-bit LVDS level translators, and that is one failure I have seen. I've also seen inputs, outputs, or just one side of the output LVDS pair not being driven due to bad solder joints. 

 

Cheers, 

Dave
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