要在某个模块中应用 cdc_false_path,通常需要在EDA工具的脚本或配置文件中指定这些路径。以下是一个假设性的示例,展示了如何在某个模块中使用 cdc_false_path: 识别伪路径:首先,需要确定哪些路径是伪路径。这通常需要根据设计文档和电路图进行。 编写脚本或配置文件:然后,需要编写一个脚本或配置文件,将这些伪路径告...
cdc false_path用法 CDC(Cross Domain Clock)False Path,即跨域时钟约束,主要用于对不同时钟域之间的数据传输进行约束。 False Path约束的用法: 如果两个时钟之间没有路径,则只需在两个时钟之间使用set_clock_groups或set_false_path。 如果路径都是单个大CDC(单bit信号时钟域穿越),则可以在两个时钟之间使用set_...
67700 - 2016.3 - XPM_CDC does not report warnings to inform the user that set_false_path constraints are being used when the source and destination clocks are the same or related. Description The placement and routing of data paths within a clock domain are unexpected and spread across the ...
Do not use XPM_CDC modules when the source and destination clocks are the same. No warnings are generated to inform the user that set_false_path constraints are being used when the source and destination clocks are the same or related. Also unnecessary latency is added to the design. Ensur...