Answers Database
SYNPLIFY: How to change BUFG limit from 4 to 8 for Spartan-XL design? (BUFGLS)
Record #8420
Problem Title:
SYNPLIFY: How to change BUFG limit from 4 to 8 for Spartan-XL design? (BUFGLS)
Problem Description:
Keyword:spartanxl, synplicity, clock, infer, global, buffer
Urgency: Standard
General Description:
Synplify limit global buffer insertion to four. However, in some architecture such as Spartan-XL, a
design
can use up to eight BUFGLS.
Solution 1:
The following attribute can be set in .sdc file to increase the limit of BUFG insertion in Synplify:
define_global_attribute xc_global buffers (8)
End of Record #8420 - Last Modified: 01/13/00 15:45 |
