CAJ | 학술논문

利用一个和扫描链等长的扫描移位寄存器,对传统扫描链进行改造,提出了一种新型的选择触发的扫描链结构.它有效地降低了传统扫描链扫描移位过程中的动态功耗,并提高了扫描时钟频率,同时它所需要的测试数据为原始测试向量集的差分向量序列集合,编码压缩差分序列中连续"0"的测试数据后,在解压测试时不需要分离的CSR(Cyclical Scan Register,循环扫描移位寄存器).在ISCAS'89基准电路上进行的实验表明,该方法与传统的串行扫描技术相比,能有效地降低扫描移位过程中的平均功耗.
이용일개화소묘련등장적소묘이위기존기,대전통소묘련진행개조,제출료일충신형적선택촉발적소묘련결구.타유효지강저료전통소묘련소묘이위과정중적동태공모,병제고료소묘시종빈솔,동시타소수요적측시수거위원시측시향량집적차분향량서렬집합,편마압축차분서렬중련속"0"적측시수거후,재해압측시시불수요분리적CSR(Cyclical Scan Register,순배소묘이위기존기).재ISCAS'89기준전로상진행적실험표명,해방법여전통적천행소묘기술상비,능유효지강저소묘이위과정중적평균공모.
This paper presents a new selective trigger scan chain architecture by changing traditional scan design using a scan register,whose length is equal to that of scan chain.It Can efficiently reduce dynamic power in shift cvcle and increase the scan clock frequency.The test data that the architecture requires is difference test vector set,so a separate CSR(Cyclical Scan Register)isn't required in decompression after encoding lengths of runs of 0s in the test data.Experiment resuIts on ISCAS,89 benchmark circuits show that the proposed technique is more superior to reduce average power during scan test than traditional scan design.