Method for implementing a bist scheme into integrated circuits for testing RTL controller-data paths in the integrated circuits
    3.
    发明授权
    Method for implementing a bist scheme into integrated circuits for testing RTL controller-data paths in the integrated circuits 有权
    将集成电路实现为集成电路的方法,用于测试集成电路中的RTL控制器数据路径

    公开(公告)号:US06463560B1

    公开(公告)日:2002-10-08

    申请号:US09338338

    申请日:1999-06-23

    IPC分类号: G01R3187

    CPC分类号: G01R31/3187

    摘要: A method for testing a controller-data path RTL circuit using a BIST scheme without imposing any major design restrictions on the circuit. A state table is extracted from the controller netlist of the circuit using a state machine extraction program. The untested RTL elements/modules in the circuit are then selected, and the test control and data flow (TCDF) of the circuit are extracted from the controller/data path. Once the TCDF is extracted for the selected RTL elements, a symbolic testability analysis (STA) is performed to obtain test environments for as many untested data path elements as possible. The controller input sequence at the select signals of these test multiplexers needed for the particular test environment is noted and/or stored. A BIST controller is synthesized from the stored input sequences and the circuit is integrated with the BIST components using the thereby determined BIST architecture.

    摘要翻译: 一种用于使用BIST方案测试控制器数据路径RTL电路的方法,而不对电路施加任何主要的设计限制。 使用状态机提取程序从控制器网表中提取状态表。 然后选择电路中未经测试的RTL元件/模块,并从控制器/数据通路中提取电路的测试控制和数据流(TCDF)。 一旦为所选择的RTL元素提取TCDF,就执行符号可测试性分析(STA)以获得尽可能多的未经测试的数据路径元素的测试环境。 记录和/或存储特定测试环境所需的这些测试多路复用器的选择信号的控制器输入序列。 从所存储的输入序列合成BIST控制器,并且使用由此确定的BIST架构将电路与BIST组件集成。