Differential signal line length compensation method, system and device

Abstract

The invention discloses a differential signal line length compensation method, system and device, and the method comprises the steps: automatically calculating a first wiring length corresponding to the positive end of a target signal line and a second wiring length corresponding to the negative end of the target signal line if the current target signal line is the differential signal line during system wiring; judging whether the length difference between the first wiring length and the second wiring length is larger than a preset first difference threshold value or not is judged; if yes, automatically carrying out convex hull compensation on the current signal line with the short wiring length according to a preset first convex hull structure, and executing the step of automatically calculating the first wiring length corresponding to the positive end of the target signal line and the second wiring length corresponding to the negative end of the target signal line again till wiring of the target signal line is completed. Therefore, the dynamic compensation of the length of the differential signal line can be automatically carried out in the system wiring stage, and the compensation efficiency is high.

Description

technical field [0001] The invention relates to the field of server circuit design, in particular to a method, system and device for compensating the length of a differential signal line. Background technique [0002] At present, the functional design of servers is becoming more and more complex, and the number of differential signal lines is increasing, and the signal frequency of differential signal lines is also increasing, which makes the requirements for the positive and negative ends of differential signal lines to be equal. more stringent to meet signal integrity requirements. However, the length of the positive and negative ends of the differential signal line will be different due to the difference in the angle and position of the outgoing or incoming line, and the differential signal lines must be adjusted to equal length one by one. In the existing technology, the equal length adjustment of the positive and negative ends of the differential signal line requires t...

AI Technical Summary

Problems solved by technology

However, the length of the positive and negative ends of the differential signal line will be different due to the difference in the angle and position of the outgoing or incoming line, and the differential signal line must be adjusted to equal length one by one.

In the existing technology, the equal length adjustment of the positive and negative ends of the differential signal line requires engineers to determine the appropriate compensation position according to the length difference between the positive and negative ends of the differential signal line after the wiring stage and manually increase the convex hull. However, sometimes it is impossible to find a suitable compensation immediately position, so it is necessary to continuously add or remove the convex hull, which will consume a lot of time and cause the compensation efficiency to be too low

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