基于PCIe Gen5的低成本Coupon设计  

Low-cost Coupon design based on PCIe Gen5 signal

作　　者：刘涛[1] 宗艳艳[1] 王乾辉 秦玉倩 田民政 余华国 Liu Tao;Zong Yanyan;Wang Qianhui;Qin Yuqian;Tian Minzheng;Yu Huaguo(Inspur Electronic Information Industry Co.,Ltd.,Jinan 250101,China)

机构地区：[1]浪潮电子信息产业股份有限公司,山东济南250101

出　　处：《电子技术应用》2022年第6期116-120,共5页Application of Electronic Technique

摘　　要：数字技术发展日新月异,新一代服务器产品中,PCIe Gen5信号速率已经达到32 Gb/s,为了确保其信号完整性设计,单板损耗监控必不可少,优良的Coupon设计因此显得尤为重要。传统Coupon多采用Litek探头技术,以折线方式布线,尽管技术成熟,但存在占用空间大,数据稳定性差等问题。从产品设计的低成本需求出发,对PCIe Gen5信号的低成本Coupon设计展开研究,结合差分绕线理论分析以及仿真数据,对几种不同绕线方式进行分析对比,选择了一种低空间占有率且高可靠性的Coupon布线方式,并对测试治具进行了改进。实验结果表明,提出的Coupon设计方法不仅比传统方法占用空间少,而且数据稳定性更高,更加有利于Coupon的低成本、高可靠性设计。The development of digital technology is changing rapidly.In the new generation of server products,the PCIe Gen5 signal rate has reached 32 Gb/s.In order to ensure its signal integrity design,single-board loss monitoring is essential,and a good Coupon design is therefore particularly important.Traditional Coupons mostly use Litek probe technology,and wiring in a broken line.Although the technology is mature,there are still many problems such as large space occupation and poor data stability.Based on the low-cost requirements of product design,this paper researches on the low-cost Coupon design of PCIe Gen5 signal.Different wiring methods are analyzed and compared through theoretical analysis and simulation.Then the high-reliability Coupon wiring method is selected which can also takes up less space.The test fixture is also optimized which can also improve data stability.Experimental results show that the Coupon design method proposed in this paper not only takes up less space than traditional methods,but also has higher data stability.Therefore,this method is more conducive to the low-cost and high-reliability design of Coupons.

关 键 词：PCIE 32 Gb/s COUPON 相位差 测试验证 

分 类 号：TN402[电子电信—微电子学与固体电子学]