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Altera_Forum
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15 years ago

ALTDDIO_OUT Megafunction: How to increase width to 1024bits wide?

For my Cyclone IV E project, is it possible to manually create a ALTDDIO_OUT instance with a width of 1024. At present, the ALTDDIO_OUT version 10.1sp1 Megafunction wizard only allows selection...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Thanks for the comments.

I was looking at DDR since the signal needed to travel more than 2m and was looking at reducing the source-synchronous clock frequency for power reasons (since operating off battery and it had to go to transmit to approx another 100 boards with 100 receivers in a multidrop LVDS senario). Also lower clock would give lower EMC.

But I have decided to drop DDR for now (stick with SDR) as simplier.

Ian