Webb利用group_path命令，可以控制时序优化的目标范围。 比如最开始不确定 input_delay 的需求，可以设置 input-to-register paths 为一个单独的path group；从而使得DC综合工具可以时序优化 register-to-register paths 。 下例，是把 input_delay/output_delay/reg-to-reg 分成三组。 The command for grouping paths is group_path. Webb23 juni 2006 · Hi, negative slack are different types : set up slack and hold slack. u can negative slack in setup and hold also. So, one way correcting hold violations is inserting delay cells in clock tree synthesis. Also, setup violations can we corrected by sizing the cells and declaring multicycle paths if there are two cycles.
综合约束命令group_path的理解 - 代码天地
Webb27 aug. 2024 · 2) Concurrent clock and data optimization (CCD) set_app_options -name clock_opt.flow.enable_ccd -value true This app option performs clock concurrent and data (CCD) optimization when it is set to true. In clock concurrent optimization technique, it optimizes both data and clock path concurrently. Webbicc_shell> report_timing -to / -from /clk #see complete clock path icc_shell>report_timing -to -path_type … only toilet paper pee and poo go down the loo
Tcl与Design Compiler （十三）——Design Compliler中常用到的命 …
WebbICC2支持以下方式的clock tree exceptions： 1）自定义sink pin。 2）自定义insertion delay的需求。 3）自定义ignore pin。 定义clock tree exceptions使用set_balnace_points命令，报告set_balnace_points使 … WebbFor measuring ICC 1( Interclass correlation) ICC2(Inter-rater reliability) which options at Scale-reliability (2 way mixed, or 2 way random/absolute agreement, consistency) are … Webb13 feb. 2024 · Grouping of macros as per hierarchy In a hierarchical design, macros must be placed as per their group in the hierarchy. We can highlight the macros with different clours as per their group for better visibility of macro groups. PnR tools provide the option to see the macros and standard cells as per their hierarchy. only token