56 Gbps高速信号传输系统仿真验证设计  

Simulation and verification design of 56 Gbps high-speed signal transmission system

作　　者：李宝峰[1] 黎铁军[1] 刘勇辉 马柯帆[1] 罗煜峰[1] 姚信安[1] LI Bao-feng;LI Tie-jun;LIU Yong-hui;MA Ke-fan;LUO Yu-feng;YAO Xin-an(College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2023年第2期228-236,共9页Computer Engineering & Science

基　　金：国家重点研发计划(2018YFB0204301)。

摘　　要：新一代高性能计算机的高速信号传输系统采用56 Gbps PAM4信号实现,传输通道跨越多块PCB板和多级连接器,信号完整性设计面临极大挑战。提出了面向全通道的56 Gbps高速信号传输系统仿真验证方案,通过板材参数校准、连接器参数测试、PCB布线模型提取,建立了更接近实际情况的复杂传输通道模型,并进行了全通道协同仿真实验。通过仿真实验与设计优化迭代,成功保障了56 Gbps PAM4高速信号的稳定可靠传输。The high-speed signal transmission system of the new generation high-performance computer is realized by 56 Gbps PAM4 signal,and the transmission channel spans multiple PCB boards and multi-level connectors,so the design of signal integrity is facing great challenges.A simulation and verification scheme of 56 Gbps high-speed signal transmission system for the whole channel is proposed.Through plate parameter calibration,connector parameter test,and PCB wiring model extraction,a more practical complex transmission channel model is established,and the whole channel collaborative simulation experiment is carried out.Through the simulation experiment and iterative design,the stable and reliable transmission of 56 Gbps PAM4 high-speed signal is successfully guaranteed.

关 键 词：高速信号 PAM4 信号完整性 仿真 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]