buf_one_exdes.ucf

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# Tx Core Period Constraint. This constraint can be modified, and is
# valid as long as it is met after place and route.
NET "CLKA"  TNM_NET     = "CLKA";
  
NET "CLKB"  TNM_NET     = "CLKB";

TIMESPEC "TS_CLKA"      = PERIOD "CLKA"  25 MHZ;
  
TIMESPEC "TS_CLKB"      = PERIOD "CLKB"  25 MHZ;

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