百兆车载以太网编码子层加扰电路设计  

Design of scrambling circuit of 100Mb/s Automotive Ethernet Physical Coding Sublayer

作　　者：李佩翰 谢亮 金湘亮 LI Pei-han;XIE Liang;JIN Xiang-liang(School of Physics and Optoelectronics,Xiangtan University;Microelectronics and System Integration Hunan Engineering Laboratory;School of Physics and Electronics,Hunan Normal University)

机构地区：[1]湘潭大学物理与光电工程学院 [2]微光电与系统集成湖南省工程实验室 [3]湖南师范大学物理与电子科学学院

出　　处：《中国集成电路》2024年第5期34-39,共6页China lntegrated Circuit

摘　　要：为避免由于数据高速传输过程中所带来的频谱杂散,基于协议IEEE 802.3bw,本文提出了一种符合100BASE-T1以太网物理层(PHY)下编码子层(PCS)传输的侧流加扰及解扰电路的设计实现。文中阐述了侧流加解扰的原理细节,同时基于经典状态机结构,结合协议内部控制信号以及数据流要求,设计出了侧流加扰以及侧流解扰电路。通过对设计进行实现、仿真,仿真结果符合协议要求,加解扰电路与PCS系统控制信号相兼容,可应用于百兆车载以太网接口电路设计。In order to avoid the spectral spurious caused by the high-speed data transmission process,based on the protocol IEEE 802.3bw,this paper proposes a side-stream processing system that conforms to the coding sublayer(PCS)transmission under the 100BASE-T1 Ethernet physical layer(PHY).Design and implementation of scrambling and descrambling circuit.This paper expounds the principle details of side stream scrambling and descrambling,and designs a side stream scrambling and side stream descrambling circuit based on the classical state machine structure,combined with the internal control signals of the protocol and the requirements of data flow.Through the realization and simulation of the design,the simulation results meet the requirements of the protocol,and the scrambling and descrambling circuit is compatible with the control signal of the PCS system,and can be applied to the design of the 100Mb/s automotive Ethernet interface circuit.

关 键 词：电路设计 IEEE 802.3bw 侧流加扰 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术] U463.67[自动化与计算机技术—计算机科学与技术]