- Standard Delay Format
Standard Delay Format (SDF) is an
IEEEstandard for the representation and interpretation of timing data for use at any stage of an electronic design process. It finds wide applicability in design flows, and forms an efficient bridge between Dynamic Timing Simulationsand Static timing analysis
It was originally developed as an OVI standard, and later modified into the IEEE format. Technically only the SDF version 4.0 onwards are IEEE formats.
It is an
ASCIIformat that is represented in a tool and language independent way and includes path delays, timing constraintvalues, interconnect delays and high level technology parameters.
It has usually two sections: one for interconnect delays and the other for cell delays.
SDF format can be used for back-annotation as well as forward-annotation.
* [http://www.eda.org/sdf/sdf_3.0.pdf Standard Delay Format Specification in PDF format, version 3.0 (1995)]
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