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Altera_Forum
Honored Contributor
15 years agoDriving differential clock from Cyclone III Dev Board to daugther card
Hello, I am attempting to drive a differential clock out of the Cyclone III Development Board (EP3C120F780) to the "Data Conversion HSMC" daughter card. I want to clock data to a 14-bit DAC on...
Altera_Forum
Honored Contributor
15 years agoI don't exactly understand the problem. There should be no distance required between single ended and differential outputs. Distance rules only apply to differential inputs or bidirectional I/Os in relation to single ended outputs.
To implement a differential output, you don't need an ALT_OUT_BUF primitive, just assign the respective differential IO standard to the noninverted output of a differential pair.