get_timing_path 为report timing 的指令, 常用参数: -from -to -through -delay_type -nworst worst 的个数,默认值1; -max_paths max_path_cnt,默认1; -start_end_type 四中时序类型,reg_to_reg/reg_to_out/in_to_reg/in_to_out; -exclude 排除在外的list; 可以通过get_attributes 得到: arrival...
set path [get_timing_path -through $fanin_pins -through $port -from [get_clocks clk]] #register的Q端到output port的path都是被vclk约束 set path [get_timing_path -through $fanin_pins -through $port -from [get_clocks vclk]] 3.比较同一组下面所有timing path的delay,并算出最大值和最小...
set_port_abstraction -keep [get_ports RST] set_pin_abstraction 之前的一个项目,我们想在top中查看block接口的一些信息。发现有些timing path可以看到,有些timing path看不到。后来才发现原来是PT在抽取hyperscale model会自动省略一些它觉得不重要的信息,省略的这些信息不会影响到timing准确性。使用上面的命令后重...
report_timing 用来report timing: 参数在pt_shell 中通过man report_timing 得到,常用参数: -from -to -through -physical 报告中有location; -path_type full_clock_e full_clock_expanded,clock path 从launch到capture; summary,报告path的start、end、slack; end,报告path 的end、path delay、required time、...
在PrimeTime(PT)工具中,如果你想要报告由于SDC(Standard Delay Format)文件中设置了false path而导致的路径,可以使用report_timing命令并添加-exceptions all选项。这个选项会展示所有由于SDC设置而导致的例外路径,包括false path。 以下是一个示例命令: bash report_timing -from [get_pins u_dut/start_pin] -to [...
15. Report_timing –input_pins :可以看到net的delay 16. Report_lib –timing_arcs libname cellname:看库单元的时序信息 17. Report_cell –connections –verbose Instance_name :看单元的信息 18. Report_timing –max_paths 2 –nworst 2 :可以看两条path的两个最坏的timing, default为1。 19. Report...
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Report_timing –max_paths 2 –nworst 2 :可以看两条path的两个最坏的timing, default为1。 29. Report_timing –slack_lesser_than -slack_greater_than -to –rise_to –fall_to -from –rise_from –fall_from -through –rise_through –fall_through -exclude –rise_exclude –fall_exclude 30. ...
TimingpathStartpoints -Inputports, -Clockpinsofflip-flops TimingpathEndpoints -Outputports, -allinputpinsofflip-flopsexceptclockpins Typesofpaths(I) FF1 Setuptime Setuptime:thetimerequiredforthedatatobestablebeforetheclockedge CLK D2 FF2 D1
Setupsetsearch_path{../scripts./libs./des}lappendlink_path*.dbsourcedesign_name_pt_variables.tcl ReadandLinkread_verilogdesign_name.v link_designdesign_name（top_name）read_parasiticsdesign_name.SPEF（.gz）•Applyconstraintsandcheck•sourcedesign_name_pt_constraints.tcl•check_timing •Generate...