Design compiler의 Default Constraints File

defaults.con # Define system clock period set clk_period 20 # Create real clock if clock port is found if {[sizeof_collection [get_ports clk]] > 0} { set clk_name clk create_clock -period $clk_period clk } # Create virtual clock if clock port is not found if {[sizeof_collection [get_ports clk]] == 0} { set clk_name vclk create_clock -period $clk_period -name vclk } # Apply default drive strengths and typical loads # for I/O ports set_load 1.5 [all_outputs] set_driving_cell -lib_cell IV [all_inpu...