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如何成为一名高级数字 IC 设计工程师(6-5)数字 IC 验证篇:覆盖率收集
2022-06-29 01:38:00 【新芯设计】
一、覆盖率定义
覆盖率,指的是验证工作中不可或缺的一个重要环节,通过覆盖率驱动的方式,不仅可以量化验证的进度,还能够保证验证的完备性;
CDV,指的是覆盖率驱动验证。
二、覆盖率类型
代码覆盖率:UT 验证比较重视,要求 100%
功能覆盖率:IT 验证比较重视,要求 100%三、代码覆盖率
1、行覆盖率 Line Coverage:记录程序的各行代码被执行的情况;
2、条件覆盖率 Cond Coverage:记录各个条件中的逻辑操作数量被执行的情况;
3、跳转覆盖率 Toogle Coverage:记录单比特信号的 0/1 跳转情况;
4、状态机覆盖率 FSM Coverage:记录状态机的各个状态被进入的次数,以及各个状态之间的跳转情况;
5、分支覆盖率 Branch Coverage:
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