SDC Constraints (Alphabetical) The Efinity software supports the following SDC constraints. Options in square brackets [ ] are optional. check_timingcreate_clockcreate_generated_clockget_faninsget_fanoutsreport_sdc set_bus_syntax set_bus_skew set_clock_groupsset_clock_latencyset_clock_uncertaintyset_false_path set_input_delayset_multicycle_pathset_max_delayset_min_delayset_output_delay create_clock Constraintcreate_generated_clock Constraintget_fanouts Constraintget_fanins Constraintset_bus_skew Commandset_bus_syntax_mode Commandset_clock_groups Constraintset_clock_latency Constraintset_clock_uncertainty Constraintset_false_path Constraintset_input_delay and set_output_delay Constraintsset_max_delay and set_min_delay Constraintsset_multicycle_path Constraint-through Option