• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

计算机工程与科学 ›› 2023, Vol. 45 ›› Issue (02): 228-236.

• 高性能计算 • 上一篇    下一篇

56 Gbps高速信号传输系统仿真验证设计

李宝峰,黎铁军,刘勇辉,马柯帆,罗煜峰,姚信安   

  1. (国防科技大学计算机学院,湖南 长沙 410073)
  • 收稿日期:2022-06-04 修回日期:2022-08-07 接受日期:2023-02-25 出版日期:2023-02-25 发布日期:2023-02-15
  • 基金资助:
    国家重点研发计划(2018YFB0204301)

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

LI Bao-feng,LI Tie-jun,LIU Yong-hui,MA Ke-fan,LUO Yu-feng,YAO Xin-an#br#   

  1. (College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China)
  • Received:2022-06-04 Revised:2022-08-07 Accepted:2023-02-25 Online:2023-02-25 Published:2023-02-15

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。

关键词: 高速信号, PAM4, 信号完整性, 仿真

Abstract: 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.

Key words: high-speed signal, PAM4, signal integrity, simulation