SDF Annotation 和 SDF back annotation 有什么区别?
What is the difference between SDF Annotation and SDF back annotation?
SDF标注和SDF反标注有什么区别?
我在门级模拟中看到了这两个。
人们可以互换使用这些术语。然而,IEEE 1800-2017 LRM 在谈论 SDF 文件中的数据时使用术语 SDF 注释,这实际上是在另一个标准 1497-2001 中定义的。术语 back-annotation 和 forward-annotation 指的是使用该数据的过程。
SDF contains constructs for the description of computed timing data
for back-annotation and the specification of timing constraints for
forward-annotation. There is no restriction on using both sets of
constructs in the same file. Indeed, some design synthesis tools (such
as floorplanners) may need access to computed timing data as well as
the timing constraints intended to be meet.
如果您对 post 布局布线模型进行仿真,则在设计分析中使用 SDF 的反向注释。
SDF 的前向注释由分析工具完成并提供给综合工具,并且是特定于工具的。你可以参考@http://ce.sharif.edu/courses/85-86/2/ce483/resources/root/sdf_3.0.pdf
SDF标注和SDF反标注有什么区别? 我在门级模拟中看到了这两个。
人们可以互换使用这些术语。然而,IEEE 1800-2017 LRM 在谈论 SDF 文件中的数据时使用术语 SDF 注释,这实际上是在另一个标准 1497-2001 中定义的。术语 back-annotation 和 forward-annotation 指的是使用该数据的过程。
SDF contains constructs for the description of computed timing data for back-annotation and the specification of timing constraints for forward-annotation. There is no restriction on using both sets of constructs in the same file. Indeed, some design synthesis tools (such as floorplanners) may need access to computed timing data as well as the timing constraints intended to be meet.
如果您对 post 布局布线模型进行仿真,则在设计分析中使用 SDF 的反向注释。 SDF 的前向注释由分析工具完成并提供给综合工具,并且是特定于工具的。你可以参考@http://ce.sharif.edu/courses/85-86/2/ce483/resources/root/sdf_3.0.pdf