About reading multiple SDF for the same instance/module

[zeese]

Hi!

I received multiple SDF files for the same module. The sdf files are for
-functional mode
-shift mode during dft
-capture mode during dft
-mbist and bsd

Each of those sdf above contains min,typ,max, as usual. My question, during simulation,
-do I read all those sdf, or i just need to read 1?
-If I read/back annotate all those sdf file at once, will it overwrite each other, or probably, the simulator will just back-annotate the last sdf file only?

Thanks.

 

[birdy123]

Hi Zees,

you can read all the SDF at the same time. If you will do this -- this is know as merged-mode analysis ( functional mode + test mode +scan mode+ ... ). There is no harm of doing this. During the simulation it apply all the sdf whcih are not common and about the common one it will automatically pick the suitable one.

Think in this way -- You can do the analysis in the different way in different mode. But at the end of the day , this chip/design is going use and then if it fails you cann't say that it was runing in the functional mode and failed in test mode , so its not my problem. .

I hope you get my point.