MCU模拟JTAG的FPGA在线升级设计  

Design of FPGA online upgrade based on MCU analog JTAG

作　　者：邓怡兴 傅佳烨 胡中泽 DENG Yixing;FU Jiaye;HU Zhongze(State Nuclear Power Automation System Engineering Company,Shanghai 201100,China)

机构地区：[1]国核自仪系统工程有限公司,上海201100

出　　处：《集成电路与嵌入式系统》2024年第6期71-76,共6页INTEGRATED CIRCUITS AND EMBEDDED SYSTEMS

摘　　要：FPGA芯片具有灵活性高、速度快和成本低等优点,被广泛应用于对系统实时性和可靠性有较高要求的领域,如航空航天领域和核电DCS领域。FPGA芯片固件的烧写一般是通过专用的JTAG调试器,但是FPGA设备在大规模工程应用之后,无法通过专用的JTAG设备进行更新和维护。为了便于大规模应用和后期维护,本文提出基于MCU模拟JTAG的方法来实现对FPGA的升级更新。设计上位机分包发送应答机制可以保证升级包下载阶段数据下载的可靠性,设计MCU模拟JTAG来实现FPGA外置Flash的升级更新。该升级系统将用于NuCON核电DCS的I/O设备上,对于设备的大规模工程应用具有重要意义。FPGA chips have the advantages of high flexibility,fast speed and low cost,and have been widely used in all walks of life,especially in areas with high requirements for real-time and reliability of the system,such as aerospace and nuclear power DCS.The FPGA chip firmware is generally written through the special JTAG debugger,but the FPGA device cannot be updated and maintained by the special JTAG device after large-scale engineering application.In order to facilitate large-scale application and later maintenance,this paper proposes a method based on MCU simulation JTAG to realize the upgrade and update of FPGA.The subcontract sending response mechanism is designed to ensure the reliability of data download during the upgrade package download stage,and MCU simulation JTAG is designed to realize the upgrade and update of FPGA external Flash.The upgraded system will be used in the I/O equipment of NuCON nuclear DCS.It has great significance for the large-scale engineering application of equipment.

关 键 词：FPGA升级 MCU JTAG 核电DCS系统 网络通信 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]