Answers Database
FPGA Express 3.3, NCF: ERROR:TSDatabase:19 ...No TNM, TPSYNC or user group named "nco1_N214" is defined
Record #7758
Product Family: Software
Product Line: Synopsys
Product Part: FPGA Express
Product Version: 3.2
Problem Title:
FPGA Express 3.3, NCF: ERROR:TSDatabase:19 ...No TNM, TPSYNC or user group named "nco1_N214"
is defined
Problem Description:
Urgency: Standard
General Description:
After setting up timing specifications in the FPGA Express Constraints Editor, FPGA Express 3.x may
generate an NCF file with invalid syntax. The Translate stage of implementation (NGDBUILD) may
then give an error similar to the following:
Checking timing specifications ...
ERROR:TSDatabase:19 - Processing TIMESPEC definition "TS_0=FROM "nco1_N214" TO
"PADS" 15000.000000 pS" on instance "en_top_lvl_TIMESPEC_NCF": No TNM, TPSYNC
or user group named "nco1_N214" is defined.
This occurs because the FROM:TO timespec in the ncf file written out by FPGA Express is:
TIMESPEC TS_0 = FROM "nco1_N214" TO "PADS" 15 ns ;
when it should be:
TIMESPEC TS_0 = FROM "nco1/N214" TO "PADS" 15 ns ;
An underscore "_" is used as the hierarchy designator instead of a forward slash "/".
Solution 1:
Place this constraint in the UCF file using the correct syntax.
If you choose to edit the NCF file rather than transferring the constraint to the UCF file, do not c
lick
on Implement from Foundation Project Manager since the constraint will be exported again from
FPGA Express before implementation begins.
End of Record #7758 - Last Modified: 12/13/99 16:03 |
