Spartan7 FPGA 互联资源自动配置测试方法研究-《计算机技术与发展》

文章信息/Info

Title:: Research on Automated Test Configuration Method of Spartan7 FPGA Interconnect Resource

Author(s):: SHAN Xiao-yan; National New Energy Vehicles Technology Innovation Center,Semiconductor Department,Beijing 100176

Keywords:: Spartan-7; interconnect resource; sextuple line; test vector; ATE

摘要:: 互联资源是 FPGA 芯片内部信号传输路径的可编程网络,CLB 及其互联资源是 FPGA 的核心,对互联资源的测试是对芯片测试的关键内容。 Xilinx7 系以后的 FPGA 需要在 Vivado 进行开发,Vivado 设计套件是 ISE 后的新一代开发工具,基于 XDL( Xilinx design language) 语言的 ISE 确定性布线方法已经不适用 Vivado。该文重点介绍了一种基于 Vivado 的Spartan7 FPGA 互联资源配置方法,利用该方法在 FPGA 研制测试配置文件较难获取的情况下,能够完成对 FPGA 器件的仿真。介绍的基于 Vivado 高级约束文件自动布线方法,生成配置文件,并将其转换为 ATE 的测试向量,应用于自动测试系统 ATE 实现对 Xilinx 7 系 FPGA 测试。应用该方法对 Spartan-7 系列 XC7S6FTGB196-1 的进行实验,实验表明该方法可实现六倍线全覆盖布线。该方法可应用到单倍线、二倍线、四倍线的测试,实现对 FPGA 互联资源的全覆盖测试。

Abstract:: Interconnection resource is the programmable network of signal transmission path in FPGA chip. CLB and its interconnection resource are the core of FPGA. The testing of interconnection resource is the key content of chip testing. After the 7 series of Xilinx,FPGA needs to be developed on Vivado,which is a new development tool after ISE. The deterministic ISE routing method based on XDL language is no longer suitable for Vivado. We mainly introduce a method of spartan7 FPGA interconnection resource configuration based on Vivado. With this method,FPGA device simulation can be completed when FPGA development test configuration files are difficult to obtain. We introduce the automatic routing method based on Vivado advanced constraint file, and the generated configuration file is applied to the automatic test system ATE to test 7-series FPGA. This method is applied to Spartan-7 XC7S6FTGB. Experiment shows that the proposed method can realize sextuple line full coverage routing.