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Altera_Forum
Honored Contributor
Honored Contributorclocks from PLL to megafunction sdc
Hi! I'm a beginner in learning of constrains.I'm trying to write sdc-file for sdi megafunction. In UG for that megafunction altera offers the following: derive_clock_uncertainty
create_clock ...
Altera_ForumHonored Contributor
Honored ContributorDefinitely too much.
create_clock for PLL input clock and derive_pll_clocks will already define all PLL output clocks. Suggest to review the excellent TimeQuest user guide in Altera Wiki. http://www.alterawiki.com/wiki/timequest_user_guide
