Method for laying circuit board line

Abstract

The invention discloses a method for laying out circuit board line. A data processing device assists a routing application program to carry out linear distance calculation and ground wire layout. The method comprises the steps: the linear distances between two signal lines with different line characteristics are respectively read from the corresponding routing parameters of the two signal lines and compared, and the larger linear distance is chosen as the linear distance of the two signal lines; at the same time, the line width of the ground wire to be laid out is calculated according to calculation rules; the line width calculated is compared with the line width regulated in the routing parameters of the line characteristics of the ground, if the comparison result is not in accordance, the line width regulated in the routing parameters of the line characteristics of the ground is corrected into the line width calculated to have the routing application program lay out the ground wire between the two signal lines according to the corrected ground wire width, thereby improving the correctness of the calculation and working efficiency, simplifying operation process and saving operation time.

Description

technical field [0001] The present invention relates to a method for laying circuit board lines, and more particularly, relates to a method for calculating the line distance and laying ground lines of a wiring application program assisted by a data processing device. Background technique [0002] At present, in the layout design of the circuit board, due to the consideration of the electrical signal transmission performance and anti-electromagnetic interference and other quality factors of the signal line (trace) laid out, the line width of the signal line, the same line attribute ( Net Type) signal lines and the line spacing between signal lines with different line attributes have certain restrictions. Take a signal line laid on an eight-layer circuit board as an example, its line attribute is LAN_D_4-6-20_4-8.5-20_3.5-7-20$L3&, where 4-6-20 indicates the signal whose line attribute is LAN_D The signal line width of the top layer (TOP layer) and the bottom layer (BOT layer...

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Problems solved by technology

[0004] However, in the aforementioned prior art, because the calculation process is completed manually by wiring engineers, its biggest defect is that the stability is relatively poor, and it is unavoidable that it will be affected by many factors, including the physiological and psychological factors of the operators themselves and the external environment. The influence causes errors in the calculation process. For example, when comparing the line spacing between signal lines with different line attributes in two signal lines, it is easy for wiring engineers to confuse the correspondence required for comparison due to negligence, resulting in the calculated results. for wrong

In addition, after the comparison is completed, it is still necessary to manually calculate the line width of the ground wire to be laid according to the larger one of the selected comparison data, and human calculation errors cannot be avoided.

On the other hand, the operation process is complicated, and the time-consuming and high cost of too many human resources is obviously extremely unreasonable for manufacturers who are eager to reduce production costs and increase product competitiveness.

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