IEEE DRAFT 1497 : DO.9 MAY 99

1 Overview
    1.1 Scope
    1.2 Organization of this standard
2 References
3 Conventions
    3.1 Terminology conventions
    3.2 Syntactic conventions
4 SDF in the design process
    4.1 Sharing of timing data
    4.2 Using multiple SDF files in one design
    4.3 Timing data and constraints
    4.4 Timing environments
    4.5 Back-annotation of timing data for design
          analysis
    4.6 Forward-annotation of timing constraints for
          design synthesis
    4.7 Timing models supported by SDF
5 Defining the standard delay format
    5.1 SDF file content
    5.2 Header content
    5.3 Cells
    5.4 Delays
    5.5 Timing checks
    5.6 Labels
    5.7 Timing environment
Annex A - Syntax of SDF
Annex B - SDF file examples

This standard delay format (SDF) already exists as an OVI standard for representing and interpreting timing data for use at any stage of the electronic design process. The ASCII data in the SDF file is represented in a tool and language independent way and includes path delays, timing constraint values, interconnect delays and high level technology parameters.