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Altera_Forum's avatar
Altera_Forum
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18 years ago

LVDS I/O termination

Is an external 100Ohm resistor required at the input of an LVDS receiver I/O pair for the Cyclone III devices? The literature seems to suggest yes and no. Also, if I have "rx_in" as a single-channel ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Got it. It works.

One more question if I may:

Regarding the 100 ohms differential termination on the LVDS input.

What is the keyword to be selected on the "Input Termination" column?

- OCT 100 ohms

or

- Differential

or

- Other (please specify)

What about the "Termination Control" column?

Thanks!