Answers Database
2.1i: Constraints Editor - TIMESPEC TSxx = FROM(abc) TO(xyz) - WARNING : Unable to create FROM TO with tsxx
Record #6383
Product Family: Software
Product Line: M1 Implementation
Product Part: Constraints Editor
Product Version: 2.1i
Problem Title:
2.1i: Constraints Editor - TIMESPEC TSxx = FROM(abc) TO(xyz) - WARNING : Unable to create
FROM TO with tsxx
Problem Description:
Urgency: Standard
General Description:
A following timespec definitation is not understood by
Constraints Editor.
timespec ts05 = from pads(pclk) to ffs = 6 ns;
Generates warning:
WARNING : Unable to create FROM TO with ts05.
Solution 1:
The warning can be ignored or the user can modify the ucf
file to include the timegrp and then the timespec.
For example:
timegrp pad_pclk = pads(pclk);
timespec ts05 = from pad_pclk to ffs = 6ns;
This will be fixed in a future release of the software.
End of Record #6383 - Last Modified: 06/28/99 09:41 | 
