Forum Discussion
Altera_Forum
Honored Contributor
Honored ContributorCVO frequency
I have a design that uses a CVO. This is in a Stratix III part. The User Guide states that the CVO should be able to run around 271 - 317MHz depending on it's configuration. I'm able to approach t...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- there doesn't seem to be a rule on when you need .sdc files. some get generated in the project directory, some are in the IP install directory, and some are embedded in the core --- Quote End --- I didn't know there were SDC files to add for the CVI and CVO. I have never had timing problems with them, but I suppose I should be using the SDC files just to be sure. I find it really annoying that the SDC files for generated IP do not automatically get included in all cases. Just yesterday I wasted several hours trying to get a DDR SDRAM controller working until I realized I forgot to include the SDC file. Of course, the solder ball between two of the data pins didn't help either...
