extraction of spef using star rc

[cyrax747]

How to extract spef from star rc...??

to my knowledge i think 3 files are necessary.

1 routed def
2 .tf file for synopsys
3 rc corner

please correct me in inputs if i am wrong.

How to get rc corner file ?? if possible plz say me the inputs and where to get from ??

 

[imsaurabh]

Hi,

To get spef you need following inputs,

1) complete DEF (logic with connection)
2) You dont use just .tf (is has only cell delays) as this is routed design you use technology file to get real data values of metal and vias aloang with fanout and actual routing delay.
3) RC corners with PVT conditions.
4)Input from STA (timing input)

These are the basic inputs, Not sure if you need anything else for advance analysis.

 

[cyrax747]

what are the extensions of those files for 2,3,4 ??

 

[hoanglongroyal]

hi cyrax747,
1/ DEF file
2/ I think you will need cell/macro information (from LEF) for linking your design.
3/ RC corner
that's what I am using to extract.

 

[cyrax747]

Hi

I got ur point .I want to view those files.So with which extensions the file names would be present ??

 

[rca]

You need:
the top def file from PnR your_design.def.
the NXTGRD file (.nxtgrd), techno information (based on itf)
the def to nxtgrd map file, to map the layer name between these two formats
the .lef of each macro/ips used in your_design.def (std cell, memory, pad, ...)
and that's it.
I recommend to used .sbpf which smaller than .spef (b for binary)