- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
hi,:)
i have a problem, i want to create a program which turn on 8 LEDs on a cyclone III. I want to write on the I/O FPGA port directly. In fact, i have a problem with my clock; i got this warning:"Warning: The following clock transfers have no clock uncertainty assignment Warning: From ext_clk (Rise) to ext_clk (Rise) (setup and hold)". Idon't want to create a sopc builder, i just want to do a simple program and realise following LED.(Chenillard) thanksLink Copied
1 Reply
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
That warning has nothing to do with the SOPC.
Simply, the static timming analysis tool (TimeQuest?) is warning you have not assigned any uncertantiy to the ext_clk and, thus, analysis will assume a "perfect" clock, without jitter, skew, etc.
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