Circuit schematic diagram generation method and system

Abstract

The invention provides a circuit schematic diagram generation method. The method comprises the steps that a hierarchy value of a netlist device is calculated to determine a column of the netlist device; a sorting value of the netlist device is calculated to generate a pseudo device according to the communication line or the feedback line; only signal connection between adjacent devices is needed,wiring algorithm is simplified, the netlist devices and the pseudo devices are sorted according to the sorting values to generate a sorting graph; a constraint graph is generated according to the sorting graph; wire bending is less, forward traversal is performed on constraint graph, a numerical value of the first longitudinal position is calculated and the constraint graph is reversely traversed,the numerical value of the first longitudinal position is adjusted to generate the numerical value of the second longitudinal position, the signal connecting lines are distributed to the longitudinalline rails, the numerical value of the transverse position is calculated, the signal connecting lines are connected to generate the circuit schematic diagram, device layout does not need to be basedon grids, and the graphical display effect is better. The invention also provides a circuit schematic diagram generation system for realizing the circuit schematic diagram generation method.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a method and system for generating circuit schematic diagrams. Background technique [0002] The circuit schematic diagram, also known as the circuit diagram, intuitively reflects the components and their electrical connections in the circuit in a graphical way, directly reflects the structure and working principle of the circuit, and is widely used in the design and analysis of circuits. For complex FPGA integrated circuits, the automatic generation of circuit schematic diagrams from the logic circuit netlist for graphical display is an indispensable tool for aided design software to improve the designer's interactive experience. [0003] In order to enhance the understanding of complex circuit schematic diagrams by integrated circuit designers, the automatically generated circuit diagrams need to be regular, symmetrical, readable, easy to understand, and as close as...

AI Technical Summary

Problems solved by technology

In the prior art, a grid-based circuit diagram automatic generation method is adopted, and a device is placed in each grid interval, which is more suitable for circuits with little difference in the size of the graphical display device, so it is not suitable for FPGA integrated circuits or in graphics. Use when displaying hierarchical integrated circuit designs

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