Set_multicycle path regarding

[vimalraj205]

Hai friends

i have doubt whether can i set a multicycle path of setup value 0

set_multicycle_path -setup 0 -from xxx -to yyyy -end

will i be able to meet setup and hold for this path if setup is checked at 0 how should i give a multicycle path for a hold check


Thank you

 

[yx.yang]

I think it's unable to meet both setup and hold for such, if you using usual library cells. And it's also un-reasonable for the real DFF to have setup and hold both equal to 0.

 

[verymiss]

In gerneral,the cycle of setup check is less one than hold check.so the constraint for this path should be set_multicycle_path -hold -1 -from xxx -to yyyy