基于嵌入式逻辑分析仪的FPGA测试

FPGA signal extraction based on embedded logic analyzer

在高度集成FPGA芯片测试中,其内部信号的实时获取与分析比较困难。对嵌入式逻辑分析仪SignalTapⅡ在FPGA测试中的应用进行了试验研究。将逻辑分析模块嵌入到FPGA信号发生器,构成一个逻辑分析仪。在FPGA芯片工作状态下,实现了内部信号的获取与分析。实验结果表明,应用SignalTapⅡ对FPGA进行测试,操作方便,实时性较高。

In the testing and design process of high integration rate FPGA, capture and analysis of internal signals in FPGA is important. A sort of embedded logic analyzer SignalTapⅡwas introduced to settle this problem. A logic analysis core was embedded in a FPGA signal generator to construct an embedded logic analyzer. All the internal signals in FPGA were tested and analyzed in the working state of FPGA. The result of the experiment shows that the test of FPGA by application of SignalTapⅡfeatures convenient operation and high real-time performance.