PCIExpress signal integrity improvement method of navigation display system

Abstract

The invention discloses a PCIExpress signal integrity improvement method of a navigation display system. The PCIExpress signal integrity improvement method for the navigation display system comprises the steps of setting simulation parameters of a circuit board in the navigation display system so as to set PCB characteristic impedance of the circuit board, and performing crosstalk noise simulation on the circuit board of the navigation display system after the simulation parameters are set to obtain the coupling length and the distance between the differential transmission lines; and carrying out channel analysis simulation on the circuit board of the navigation display system, on which the coupling length and the distance between the differential transmission lines are obtained, so as to improve the integrity of PCIExpress signals. According to the PCIExpress signal integrity improvement method of the navigation display system, the quality of signals in a circuit system is ensured by using a simulation analysis method, the design efficiency is greatly improved, the cost is reduced, and the purpose of correct design is achieved.

Description

technical field [0001] The invention relates to the technical field of high-speed circuit design, in particular to a method for improving PCI Express signal integrity of a navigation display system. Background technique [0002] The general navigation display system requires that the general navigation display system has higher requirements on the speed and accuracy of real-time data transmission than the general requirements, and requires fast and accurate data transmission, and the PCIExpress bus can solve these problems very well. However, because the signal transmission rate can reach 5Gb / s, the improvement of the operating frequency and the increase of the bus bandwidth will inevitably bring about problems including PCB space constraints, signal noise, signal integrity and avoiding signal interference, wiring length, and system timing. Set up and hold time and electromagnetic radiation (EMI) and many other issues that do not meet the design requirements. Contents of t...

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Problems solved by technology

[0003] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of PCIExpress signal integrity improvement method of navigation display system, be used to solve the promotion of operating frequency in the prior art and the increase of bus bandwidth will inevitably bring including PCB space constraints, signal noise, signal integrity and avoidance of signal mutual interference, wiring length, setup and hold time in system timing, and electromagnetic radiation (EMI) and many other issues that do not meet design requirements

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