Standard Parasitic Exchange Format (SPEF) is an IEEE standard for representing parasitic data of wires in a chip in ASCII format. Resistance, capacitance and inductance of wires in a chip are known as parasitic data. SPEF is used for delay calculation and ensuring signal integrity of a chip which eventually determines its speed of operation.
SPEF is most popular specification for parasitic exchange between different tools of EDA domain during any phase of design.
The specification for SPEF is a part of standard 1481-1999 IEEE Standard for Integrated Circuit (IC) Delay and Power Calculation System . Latest version of SPEF is part of 1481-2009 IEEE Standard for Integrated Circuit (IC) Open Library Architecture (OLA) .
SPEF is extracted after routing in Place and route stage. This helps in accurate calculation of IR-drop analysis and other analysis after routing. This file contains the R and C paramaters depending on the placement of our tile/block and the routing among the placed cells..
Read more about Standard Parasitic Exchange Format: SPEF Syntax, The Difference Between Parasitic Data Formats
Famous quotes containing the words standard, parasitic and/or exchange:
“If the Revolution has the right to destroy bridges and art monuments whenever necessary, it will stop still less from laying its hand on any tendency in art which, no matter how great its achievement in form, threatens to disintegrate the revolutionary environment or to arouse the internal forces of the Revolution, that is, the proletariat, the peasantry and the intelligentsia, to a hostile opposition to one another. Our standard is, clearly, political, imperative and intolerant.”
—Leon Trotsky (1879–1940)
“No real “vital” character in fiction is altogether a conscious construction of the author. On the contrary, it may be a sort of parasitic growth upon the author’s personality, developing by internal necessity as much as by external addition.”
—T.S. (Thomas Stearns)
“To coöperate in the highest as well as the lowest sense, means to get our living together. I heard it proposed lately that two young men should travel together over the world, the one without money, earning his means as he went, before the mast and behind the plow, the other carrying a bill of exchange in his pocket. It was easy to see that they could not long be companions or coöperate, since one would not operate at all. They would part at the first interesting crisis in their adventures.”
—Henry David Thoreau (1817–1862)