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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

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Choose differential for LVDS inputs.

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Leave "Termination Control Block Column" blank? This column doesn't have pull down options.

Thanks!