PrimeTime再了解(十)

Timing Exception

Max / Min Delay

Max / Min delay
set_max_delay  8.5 -from [get_ports {A}] -to [get_ports {Z}]
set_min_delay   0.0 -from [get_ports {A}] -to [get_ports {Z}]


一般沒有timing model的instance
DC/PT會視為沒有 delay

set_max_delay  6.5 -from [get_pins {RAM/CLK}] –to [get_pins {FF2/D}]
set_min_delay  0.0  -from [get_pins {RAM/CLK}] –to [get_pins {FF2/D}]