What is the SDF file contains?

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varatharajan

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From the below things what are all the delays will be specified inside the SDF file?
1. Flipflop clock to Q (Tcqff) delay ,
2. gate propagation delay,
3. interconnection between the net delay


rgrds
Varatharajan
 

All of those.
 

anyone can show me a example for delay description?

thanks every body!
 

One example:

(DELAY
(ABSOLUTE
(INTERCONNECT add_60\/U1_7/CO add_60\/U1_8/C (0.0001:0.0001:0.0001) (0.0001:0.0001:0.0001))
(INTERCONNECT z52/Y add_60\/U1_8/B (0.0008:0.0008:0.0008) (0.0008:0.0008:0.0008))
 

SDF: standard delay format

It basically consists of timing information like setup time hold time etc

You refer the file attached for more information on sdf specification
 

In addition to above information, SDF files also includes two tpes "ABSOLUTE" and "INCREMENTAL"

Thanks
 

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