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Standard Parasitic Exchange Format (SPEF) is an IEEE standard for representing parasitic data of wires in a chip in ASCII format. Non-ideal wires have parasitic resistance and capacitance that are captured by SPEF. These wires also have inductance that is not included in SPEF. SPEF is used for delay calculation and ensuring signal integrity of a chip which eventually determines its speed of operation.
SPEF is the 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 the 1481-1999 IEEE Standard for Integrated Circuit (IC) Delay and Power Calculation System. The latest version of SPEF is part of 1481-2019 IEEE Standard for Integrated Circuit (IC) Open Library Architecture (OLA) .
SPEF is extracted after routing in Place and route stage. This helps in the accurate calculation of IR-drop analysis and other analysis after routing. This file contains the R and C parameters depending on the placement of a tile/block and the routing among the placed cells.
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1800 Standard Delay Format (SDF) or IEEE 1497 or IEC 61523-3 Delay and Power Calculation System (DPCS/OLA; see StandardParasiticExchangeFormat) or IEEE...
and other layout requirements. A Parasitic EXtraction (PEX) then is performed to generate a PEX-netlist with parasitic properties from the layout. The...
electromagnetics Electronic design automation Integrated circuit design StandardParasiticExchangeFormat Teledeltos Y. L. Le Coz and R. B. Iverson. A stochastic algorithm...
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February 2020). "TikTok Responds After Reddit CEO Calls It 'Fundamentally Parasitic'". Complex. Archived from the original on 28 February 2020. Retrieved...
governing their exchange. These conventions are known as the communication protocol. They concern various aspects of the exchange, like the format of messages...
43–44. ISBN 978-0-88385-720-5. Deutsch, P. (1996). ZLIB Compressed Data Format Specification version 3.3. Request for Comments. Vol. 1950. Network Working...
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are also often parasitized by cowbirds. The parents are found to reject parasitic eggs at an intermediate rate. A recent study has shown that foreign eggs...
hybridizing humans and Jyamato, turning himself into one while creating parasitic miniature Pawn Jyamato that can turn human hosts into Jyamato. While the...
reach. There is no credible evidence that the candiru, a South American parasitic catfish, can swim up a human urethra if one urinates in the water in which...
relationship to Britain and to 'real British people' was both inferior and parasitic). At the same time, although Labour had promised a return to a single...
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burnup cycle typically contains less than 60% Pu-239, with up to 30% parasitic Pu-240/Pu-242, and 10–15% fissile Pu-241. It is unknown if a device using...
transform (MDCT) audio coding format such as AAC+. "PC radios", or radios that are designed to be controlled by a standard PC are controlled by specialized...
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