PrimeTime 2019 Workshop Lab & Student Lab guide http://bbs.eetop.cn/thread-916544-1-1.html (出处: EETOP 创芯网论坛 (原名:电子顶级开发网))
string report_timing [-from from_list | -rise_from rise_from_list | -fall_from fall_from_list] [-to to_list | -rise_to rise_to_list | -fall_to fall_to_list] [-through through_list] [-rise_through rise_through_list] [-fall_through fall_through_list] [-exclude exclude_list | -rise_exclude rise_exclude_list | -fall_exclude fall_exclude_list] [-delay_type delay_type] #min(hold), max(setup) [-nworst paths_per_endpoint] [-max_paths max_path_count] [-group group_name] [-unique_pins] [-slack_greater_than minimum_slack] [-slack_lesser_than maximum_slack] [-ignore_register_feedback feedback_slack_cutoff] [-report_ignored_register_feedback] [-include_hierarchical_pins] [-trace_latch_borrow] [-trace_latch_forward] [-pba_mode none | path | exhaustive] [-start_end_type from_to_type] [-normalized_slack] [-start_end_pair] [-cover_design] [-cover_through through_list] [-dont_merge_duplicates] [-pre_commands pre_command_string] [-post_commands post_command_string] [-path_type format] #full, full_clock, full_clock_expanded [-input_pins] [-nets] [-nosplit] [-transition_time] [-capacitance] [-significant_digits digits] [-crosstalk_delta] [-derate] [-variation] [-exceptions dominant | overridden | all] [-voltage] [-supply_net_group] [-physical] [-sort_by group | slack] [-tag_paths_filtered_by_pba tag_name] [path_collection] 加上-exceptions all可以报出unconstrained path, 这样可以用一些special check,去检查这种异步路径的走线时延,比如用来检查FIFO The unconstrained paths and their reason is reported for all three options if timing_report_unconstrained_paths variable is set to true, otherwise unconstrained paths will not be reported. set_app_var timing_report_unconstrained_paths true
status report_clock [-attributes] [-skew] [-groups] [-map] [-map_of instance_list] [-cells hierarchical_cell_list] [-include internal | virtual] [-exclusivity] [-nosplit] [clock_names] report_clock -exclusivity -groups可以报出设置了哪些clock group, 是通过set_clock_groups命令。
status set_clock_groups -group clock_list [-exclusive] [-physically_exclusive] [-logically_exclusive] [-asynchronous] [-allow_paths] [-name name] [-comment comment_string] set_clock_groups -physically_exclusive -group {CLK1 CLK3} -group {CLK2 CLK4} CLK1 & CLK3是一个group, CLK2 & CLK4是一个group, CLK1 CLK3 与CLK2 CLK4为不同group(异步)
string create_generated_clock [-name clock_name] -source master_pin [-divide_by divide_factor | -multiply_by multiply_factor | -edges edge_list ] [-combinational] [-duty_cycle percent] [-invert] [-preinvert] [-edge_shift edge_shift_list] [-add] [-master_clock clock] [-pll_output output_pin] [-pll_feedback feedback_pin] [-comment comment_string] source_objects 如果gen clk设置得不对的话,会导致其定义点定义不上时钟,并且之后的fanout也不会有时钟,这点有注意。 一般在upadate timing的时候会报gen clk不能expand,这时候就要去检查下gen clk是否设置正确。 而且generated clock定义点如果原来有多个clock sources的话, 需要对每个clock sources都给定义generated clock,而且还要设置好相应的clock group 定义不全的话,会导致后续否则与相应source点之间没有timing path, 可能会有timing风险。
status set_sense [-type clock | data] [-non_unate] [-rise] [-fall] [-clock_fall] [-clock_rise] [-primary] [-generated] [-positive] [-negative] [-stop_propagation] [-clock_leaf] [-pulse pulse_type] [-clocks clock_list] object_list
string report_sense [-type clock | data] [-clocks clock_list] [-nosplit] object_list
Displays slack of specified pins or ports.
string report_global_slack [-significant_digits digits] [-nosplit] [-min] [-max] [-rise] [-fall] port_pin_list
设置app
set_app_var timing_report_unconstrained_paths true