pengfan
Newbie level 5
set_clock_uncertainty
DC constraint has the following constaint statement:
set_clock_uncertainty -setup 1.5 [get_clocks clk]
set_clock_uncertainty -hold 0.5 [get_clocks clk] ,
To setup time analysis ,why set_clock_uncertainty is 1.5 ?
but to hold time analysis,why the value of the set_clock_uncertainty is 0.5?
why the value of the set_clock_uncertainty is different ?
DC constraint has the following constaint statement:
set_clock_uncertainty -setup 1.5 [get_clocks clk]
set_clock_uncertainty -hold 0.5 [get_clocks clk] ,
To setup time analysis ,why set_clock_uncertainty is 1.5 ?
but to hold time analysis,why the value of the set_clock_uncertainty is 0.5?
why the value of the set_clock_uncertainty is different ?