一般现在多用的都是offline BIST的架构,可以分为4大类:
1)those assume no special structure to the circuit under test;
2)those that make use of scan chains in the circuit under test;
3)those that configure scan chains for test pattern generation and output reponse analysis;
4)those that use the concurrent checking circuitry of the design;
BIST Archi for circuit without scan design
需要增加的逻辑:two LFSR,two multiplexers,(CSBL arch)
1)第一个multiplexer选择PI或PRPG的输入;
2)CUT是一个或combinational或sequential的circuit;
3)第二个multiplexer选择PO或SISR的输出;
4)SISR比较最终的signature与嵌入的golden signature的区别;
STUMPS架构:
CBILBO架构:
BIST arch for circuit with scan chain
LSSD On-Chip Self-Test
CUT中的scan design的output移动到SISR中,并将pass/fail的error signal给Sout.
BIST Arch Using Concurrent Checking Circuit
Concurrent Self-Verification(CSV)
CBILBO是唯一一种可以使用pesudo-exhausting的架构;
CSV是唯一一种不需要额外的SISR或MISR的架构;
STUMPS目前应用最广的架构;但是是使用pseudo-random pattern generation的架构;