Dynamic layout changing method, electronic equipment and computer readable storage medium

A layout method and a dynamic change technology, applied in computer-aided design, calculation, electrical digital data processing, etc., can solve the problems that the router cannot be connected to the pin signal, the placement is not the minimum line length, and is unrealistic, so as to speed up the process. Physical design process, solution to line length optimization, and the effect of improving work efficiency

Active Publication Date: 2021-01-12
南京集成电路设计服务产业创新中心有限公司
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AI Technical Summary

Problems solved by technology

However, detailed design rules cannot be considered in the layout, and it may still happen that the standard cells placed in the same row are too close together, and the router cannot perform signal connections to the pins (Pins) in two adjacent standard cells, or, The placement of the given standard unit is not optimized for the minimum line length placement
Adding checks of detailed design rules to the layout is an unrealistic problem

Method used

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  • Dynamic layout changing method, electronic equipment and computer readable storage medium
  • Dynamic layout changing method, electronic equipment and computer readable storage medium
  • Dynamic layout changing method, electronic equipment and computer readable storage medium

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] figure 1 For the flow chart of the dynamically changing layout method according to the present invention, reference will be made below figure 1 , the method for dynamically changing the layout of the present invention will be described in detail.

[0038] First, in step 101, pin accesses are created for each standard unit in the design library, and three rectangles for each pin access are established.

[0039] Preferably, it is defined that the pins are on the metal layer, and the rectangles in each standard cell instance are the points where the pins are connected, and each pin connection point is represented by three rectangles, which are respectively the ...

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Abstract

The invention discloses a dynamic layout changing method. The method comprises the following steps: creating standard unit pin access and a corresponding rectangle; sorting the standard units, findingout a pin access rectangle of each standard unit, and checking a design rule to obtain a state violating the design rule; and constructing a directed weighted graph according to the state of violating the design rule, performing overturning processing on the standard unit, and finishing pin wiring of the standard unit. According to the dynamic layout changing method, the electronic equipment andthe computer readable storage medium, early-stage repair can be carried out on the faulty standard unit layout, so that standard unit pins can be smoothly wired and connected, and the design process is accelerated.

Description

technical field [0001] The invention relates to the technical field of VLSI physical design, in particular to layout and wiring in the VLSI physical design process. Background technique [0002] With the advancement of ultra-large-scale integrated circuits to deep submicron and nanometers, the scale of integrated circuits is getting larger and larger, and the system is becoming larger and more complex, which also brings many new problems to Electronic Design Automation (EDA) tools , especially brings more challenges to the layout and routing link. Layout and routing are two important links in the physical design of integrated circuits, and they are also a general method to solve the realization problems of modern complex physical design. Layout is to determine the position and direction of standard cells in the design layout, and to give the constraints and optimization goals of the solution. Some standard cells may have fixed positions while others are immutable. The lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/398G06F30/392
CPCG06F30/392G06F30/398
Inventor 陈刚李琳
Owner 南京集成电路设计服务产业创新中心有限公司
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