摘要
为提高测试覆盖率,本文提出了基于任务流的混合信号SoC系统测试方法。根据SoC的设计要求可以抽取出所希望的操作集合,所有操作的不同组合可以形成若干基本任务,将不同的任务连接起来形成一个具体的SoC工作目标,这个不同任务的连续实现形成了任务流。针对一个混合信号SoC系统,通过分析其功能结构,建立了任务执行过程的DFG模型,并从中提取出对系统测试的三个任务和约束条件,据此设计出testbench及其测试程序。在Modelsim仿真工具下的结果显示,基于任务流的IP核测试方法对IP模块的覆盖率能够达到100%。
To reduce the testing cost of IP cores in SoC systems,a novel design method of the testbench based on task flow is proposed in this paper,which tries to improve the test coverage,differing from reducing test time and re-sources.The method is designed for applying to a mixed-signal SoC system.With functional model analysis,as an ex-ample,the system DFG model for a mixed signal SoC is derived.Following the design specification and DFG,three tasks and their constraints to the system test is extracted.Finally the testbench and test program are designed.The simulation results in Modelsim show that the functions coverage of the testbench based on task flow can reach 100% for IP modules.
出处
《电子测量与仪器学报》
CSCD
2010年第11期1024-1030,共7页
Journal of Electronic Measurement and Instrumentation
基金
北京市教委科技强教计划PHR(IHLB)项目资助
