############################################################################### # Created by write_sdc # Tue Dec 7 11:29:52 2021 ############################################################################### current_design caravel_clocking ############################################################################### # Timing Constraints ############################################################################### create_clock -name ext_clk -period 25.0000 [get_ports {ext_clk}] set_clock_transition 0.1500 [get_clocks {ext_clk}] set_clock_uncertainty 0.2500 ext_clk set_propagated_clock [get_clocks {ext_clk}] create_clock -name pll_clk -period 6.6667 [get_ports {pll_clk}] set_clock_transition 0.1500 [get_clocks {pll_clk}] set_clock_uncertainty 0.2500 pll_clk set_propagated_clock [get_clocks {pll_clk}] create_clock -name pll_clk90 -period 6.6667 [get_ports {pll_clk90}] set_clock_transition 0.1500 [get_clocks {pll_clk90}] set_clock_uncertainty 0.2500 pll_clk90 set_propagated_clock [get_clocks {pll_clk90}] create_generated_clock -name pll_clk_divided -source [get_ports {pll_clk}] -divide_by 2 [get_pins {_355_/Y}] set_propagated_clock [get_clocks {pll_clk_divided}] create_generated_clock -name pll_clk90_divided -source [get_ports {pll_clk90}] -divide_by 2 [get_pins {_357_/Y}] set_propagated_clock [get_clocks {pll_clk90_divided}] create_generated_clock -name core_ext_clk_syncd -source [get_pins {_444_/Q}] -divide_by 1 [get_pins {_347_/X}] set_propagated_clock [get_clocks {core_ext_clk_syncd}] create_generated_clock -name core_clk_pll -source [get_pins {_355_/Y}] -divide_by 1 [get_ports {core_clk}] set_propagated_clock [get_clocks {core_clk_pll}] create_generated_clock -name user_clk_pll -source [get_pins {_357_/Y}] -divide_by 1 [get_ports {user_clk}] set_propagated_clock [get_clocks {user_clk_pll}] set_clock_groups -name group1 -logically_exclusive \ -group [get_clocks {core_ext_clk_syncd}] set_clock_groups -name group2 -logically_exclusive \ -group [get_clocks {core_clk_pll}] set_clock_groups -name group3 -logically_exclusive \ -group [get_clocks {user_clk_pll}] set_clock_groups -name group4 -logically_exclusive \ -group [get_clocks {ext_clk}]\ -group [list [get_clocks {pll_clk}]\ [get_clocks {pll_clk90}]\ [get_clocks {pll_clk90_divided}]\ [get_clocks {pll_clk_divided}]] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {ext_clk_sel}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel2[0]}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel2[1]}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel2[2]}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel[0]}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel[1]}] set_input_delay 1.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {sel[2]}] set_output_delay 5.0000 -clock [get_clocks {ext_clk}] -add_delay [get_ports {resetb_sync}] ############################################################################### # Environment ############################################################################### set_load -pin_load 0.0334 [get_ports {core_clk}] set_load -pin_load 0.0334 [get_ports {resetb_sync}] set_load -pin_load 0.0334 [get_ports {user_clk}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {ext_clk}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {ext_clk_sel}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {ext_reset}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {pll_clk}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {pll_clk90}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {resetb}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel[2]}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel[1]}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel[0]}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel2[2]}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel2[1]}] set_driving_cell -lib_cell sky130_fd_sc_hd__inv_1 -pin {Y} -input_transition_rise 0.0000 -input_transition_fall 0.0000 [get_ports {sel2[0]}] set_timing_derate -early 0.9500 set_timing_derate -late 1.0500 ############################################################################### # Design Rules ############################################################################### set_max_fanout 5.0000 [current_design]