| if {[info exists ::env(CLOCK_PORT)] && $::env(CLOCK_PORT) != ""} { |
| create_clock [get_ports $::env(CLOCK_PORT)] -name $::env(CLOCK_PORT) -period $::env(CLOCK_PERIOD) |
| } else { |
| create_clock -name __VIRTUAL_CLK__ -period $::env(CLOCK_PERIOD) |
| set ::env(CLOCK_PORT) __VIRTUAL_CLK__ |
| } |
| set input_delay_value [expr $::env(CLOCK_PERIOD) * $::env(IO_PCT)] |
| set output_delay_value [expr $::env(CLOCK_PERIOD) * $::env(IO_PCT)] |
| puts "\[INFO\]: Setting output delay to: $output_delay_value" |
| puts "\[INFO\]: Setting input delay to: $input_delay_value" |
| |
| set_max_fanout $::env(SYNTH_MAX_FANOUT) [current_design] |
| #set_max_cap 0.3 [current_design] |
| #set_max_trans 1.5 [current_design] |
| |
| set clk_indx [lsearch [all_inputs] [get_port $::env(CLOCK_PORT)]] |
| set rst_indx [lsearch [all_inputs] [get_port $::env(RESET_PORT)]] |
| set all_inputs_wo_clk [lreplace [all_inputs] $clk_indx $clk_indx] |
| set all_inputs_wo_clk_rst [lreplace $all_inputs_wo_clk $rst_indx $rst_indx] |
| #set all_inputs_wo_clk_rst $all_inputs_wo_clk |
| |
| |
| # correct resetn |
| set_input_delay $input_delay_value -clock [get_clocks $::env(CLOCK_PORT)] $all_inputs_wo_clk_rst |
| #set_input_delay 0.0 -clock [get_clocks $::env(CLOCK_PORT)] {resetn} |
| set_output_delay $output_delay_value -clock [get_clocks $::env(CLOCK_PORT)] [all_outputs] |
| |
| # TODO set this as parameter |
| set_driving_cell -lib_cell $::env(SYNTH_DRIVING_CELL) -pin $::env(SYNTH_DRIVING_CELL_PIN) [all_inputs] |
| set cap_load [expr $::env(SYNTH_CAP_LOAD) / 1000.0] |
| puts "\[INFO\]: Setting load to: $cap_load" |
| set_load $cap_load [all_outputs] |
| |
| puts "\[INFO\]: Setting clock uncertainity to: $::env(SYNTH_CLOCK_UNCERTAINITY)" |
| set_clock_uncertainty $::env(SYNTH_CLOCK_UNCERTAINITY) [get_clocks $::env(CLOCK_PORT)] |
| |
| puts "\[INFO\]: Setting clock transition to: $::env(SYNTH_CLOCK_TRANSITION)" |
| set_clock_transition $::env(SYNTH_CLOCK_TRANSITION) [get_clocks $::env(CLOCK_PORT)] |
| |
| puts "\[INFO\]: Setting timing derate to: [expr {$::env(SYNTH_TIMING_DERATE) * 10}] %" |
| set_timing_derate -early [expr {1-$::env(SYNTH_TIMING_DERATE)}] |
| set_timing_derate -late [expr {1+$::env(SYNTH_TIMING_DERATE)}] |
| |
| |
| #set LIB_FILE "sky130_sram_1kbyte_1rw1r_32x256_8_TT_1p8V_25C.lib" |