在静态时序分析中, set_false_path 和 set_disable_timing 都可以用来设置 timing exceptions,告诉工具忽略某些特定的path,但是在使用过程中,这两个命令又有些细微的区别。 set_false_path 是用来设置 timing path,表示不用 check 这些 path 的timing,但是依然会去计算这些 path 上的delay set_disable_timing 是用...
The apparatus comprises first logic that determining a subset of transition fault sites on an IC to be tested, second logic that identifies a longest sensitizable path through each transition fault site of the subset of transition fault sites, and third logic that generates a bounded set of ...
高级时序异常 - 错误路径、 Min-Max 延迟和 Set_Case_Analysis 了解异常约束的不同类型,并详细查看错误路径、min/max 延迟和案例分析约束。 Loading... 查看更多
59893 - Vivado Constraints - How do I set input delay when MMCM is used on the clock path? Description How can I set input delay when MMCM is used on the clock path? Solution In general, the reference clock used for the -clock option of set_input_delay is the one created on the...
Hi, I'm pretty new to Verilog and I'm using Quartus II to try to achieve a zero delay path. I want to add certain delay to some non-free running clock/signal in order to become zero delay path, how to implement it? And I also need your kind help to clarify on ...
Learn a little about the different types of exception constraints followed-up by a detailed look at the false path, min/max delay and case analysis constraints. Related Videos UltraFast Vivado Design Methodology For Timing Closure The methodology outlined in this training will enable you to achieve...
xpm_cdc_single (set_false_path) xpm_cdc_gray (set_max_delay) xpm_cdc_handshake (set_max_delay) Solution The constraints for the xpm_cdc_single, xpm_cdc_gray, and xpm_cdc_handshake modules are dependent upon the clocks in the design. xpm_cdc_single module: For the xpm_cdc_single modu...
摘要: Delay jitter degrades the quality of delay-sensitive live media streaming. We investigate the use of multipath transmission with two paths to reduce delay jitter and, in this paper, propose a nearly equal delay path set configuration (NEED-PC) scheme that...
52817 - 2012.3 Vivado Report_Timing_Summary - Why does my "set_max_delay -datapath_only" appear in the Unconstrained Path section? Description Why does "set_max_delay -datapath_only" appear in the Unconstrained Path section of the "report_timing_summary" report? I used ...
On the Set of Target Path Delay Faults in Sequential Subcircuits of LUT-Based FPGAs - Krasniewski - 2002 () Citation Context ...functions, i.e. for each LC along the path, transitions at the input and output of that LC must have the same (different) polarity if the LC function is...