- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
After compiling the design why always the timequist analyzer shows red color that means there is an unconstraint paths...
Link Copied
3 Replies
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi,
Setup time and Hold time need to be met. If it is not met it is highlighted in red. http://quartushelp.altera.com/15.0/mergedprojects/analyze/sta/sta_about_sta.htm https://www.youtube.com/watch?v=bfmthlz3dgs Best Regards, Anand Raj Shankar (This message was posted on behalf of Intel Corporation)- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
--- Quote Start --- Setup time and Hold time need to be met. If it is not met it is highlighted in red. --- Quote End --- The present problem is probably that the OP didn't enter any timing constraints. You get an idea what TimeQuest is assuming if you look at the clocks and unconstrained paths categories in the report. Without any constraints, TimeQuest assumes a default clock frequency of 1000 MHz which makes all timing paths fail. Learn how to apply timing constraints according to your actual design parameters.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi,
Is your design purely combinational one or sequential (clocked)? If its combinational one, you need to specify the IO constraints, max delay, etc. If its a clocked design, you need to specify the clocks, false paths, multi-cycle paths, IO delays, etc. Running the entire flow without specifying any constraints is akin to un-constrained synthesis and PNR, and can cause issues . Make sure you specify the design constraints in the SDC file or use the tool to specify it.
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page