2025年02期 v.46 18-24页
JESD204C同步算法研究
代苏杰 杨定坤 阳江平 耿建强
（成都振芯科技股份有限公司，四川 成都 610000）
摘要：JESD204B接口协议的链路同步是在建链之初基于特殊码字完成，建链完成后，同步过程即结束；而JESD204C接口协议是依据链路实时传输的同步码来实现同步，且同步检测不仅在初始建链时起作用，在建链完成后也会实时跟踪，确认链路是否正常。首先，比较JESD204C、JESD204B接口协议的同步差异；然后，在解析JESD204C接口协议同步理论的基础上，提出一种并行同步头查找算法；最后，基于MATLAB编写算法仿真代码，仿真结果表明该算法可行有效。
关键词：JESD204C接口协议；JESD204B接口协议；同步算法；并行同步头查找；链路同步
中图分类号：TN914.3; TP302.1 文献标志码：A 文章编号：1674-2605(2025)02-0003-07
DOI：10.12475/aie.20250203 开放获取
Research on JESD204C Synchronization Algorithm
DAI Sujie YANG Dingkun YANG Jiangping GEN Jianqiang
(Chengdu Corpro Technology Co., Ltd., Chengdu 610000, China)
Abstract: The link synchronization of JESD204B interface protocol is completed based on special codewords at the beginning of link building, and the synchronization process ends after the link building is completed; The JESD204C interface protocol achieves synchronization based on the synchronization code transmitted in real-time by the link, and synchronization detection not only plays a role during the initial link establishment, but also tracks in real-time after the link establishment is completed to confirm whether the link is normal. Firstly, compare the synchronization differences between JESD204C and JESD204B interface protocols; Then, based on the analysis of JESD204C interface protocol synchronization theory, a parallel synchronization header lookup algorithm is proposed; Finally, algorithm simulation code was written based on MATLAB, and the simulation results showed that the algorithm is feasible and effective.
Keywords: JESD204C interface protocol; JESD204B interface protocol; synchronization algorithm; parallel synchronization header detection; link synchronization
