Domain data format dedicated for parasitic parameter extracting tool

A parasitic parameter and layout technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of reducing the operating efficiency of parasitic parameter extraction tools, multi-time search, etc.

Inactive Publication Date: 2008-07-02
北京华大九天科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] It can be seen that when using a general layout database for parasitic parameter extraction, the parasitic parameter extraction tool needs to spend more time searching, reading and organizing input data, which reduces the overall operating efficiency of the parasitic parameter extraction tool

Method used

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  • Domain data format dedicated for parasitic parameter extracting tool
  • Domain data format dedicated for parasitic parameter extracting tool
  • Domain data format dedicated for parasitic parameter extracting tool

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Experimental program
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specific Embodiment approach

[0078] The ZPD format database is based on a Unix-like file system and consists of multiple binary files called segment files. The segment file stores 16 kinds of meta-type data of the layout database. The format of the metadata type in the layout database format for the parasitic parameter extraction tool is as follows:

[0079] Metadata type Lib

[0080] Record the global information related to the library, including the version number of the library format, the name of the library, the actual length corresponding to 1 unit length in the library, and the unit is meter.

[0081] 2byte unsigned integer

Special layout database format ZPD version number

String element type

Library name

[0082] 8byte real

Database unit size

[0083] Metadata type String

[0084] Record a string of characters.

[0085] 1 byte char

The first character of the string

...

Other characters of the string

1 byte char

The...

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Abstract

A dominion database format that is specially used in parasitic parameter extraction tools belongs to the technical field of IC CAD. When using a regular dominion database to perform parasitic parameter extraction, the efficiency of searching, reading and input data organization with the parasitic parameter extraction tool is not high. The invention provides a ZPD format database, which is a special-purpose dominion database format for the parasitic parameter extraction tools. The special-purpose dominion data format can establish quick indexes for polygon data as well as the bodies of bus network that are distributed inside different layers; define and save the network connection relationship and the element data type of component information, so as to reduce unnecessary data recombination; compress the storage space for the dominion coordinate data; store relevant element data into a continuous space and eliminate redundant information, so as to improve data-reading speed; the invention can considerably improve the capacity of searching, reading and input data organization for parasitic parameter extraction tools.

Description

Technical field [0001] A layout database format dedicated to a parasitic parameter extraction tool belongs to the technical field of the parasitic parameter extraction of interconnections in a chip in integrated circuit computer-aided design (IC-CAD). Background technique [0002] In integrated circuits, there are widespread metal interconnections with a width of only the order of deep submicron and multi-layer distribution. These interconnections can no longer be approximated as an equipotential connection, and it is necessary to consider the connection between them under normal operation of the circuit. Electromagnetic coupling parasitic effect (parasitic effect). Moreover, unlike devices such as transistors, this parasitic effect between metal wire interconnections is becoming more and more significant as the feature size of integrated circuits shrinks and the operating frequency increases. [0003] The current mature manufacturing process has reached below 90nm, the operating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 戴斌华裴伟候劲松
Owner 北京华大九天科技股份有限公司
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