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Altera_Forum
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14 years ago

How to Configure Cyclone IV to LVDS Clock Inputs

Hi, I would like to know how to configure my Cyclone IV design project for LVDS clock inputs. Usually the system clocks are single-ended inputs, but in my new design my system clocks are differential...
Altera_Forum's avatar
Altera_Forum
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14 years ago

You can also use a Tcl constraint.

If the clock pin has an internal termination, you also need to set the termination constraint to "OCT 100 OHMS" (or whatever its called for a Cyclone IV. This is the Stratix IV name).

Cheers,

Dave