发明名称 |
Method for the localization of time-critical events within a clock electronic circuit |
摘要 |
Time-critical events are localized within a clocked electronic circuit without requiring cyclical operation By way of measuring at the outputs of the circuit, the limit frequency of the circuit is identified. A test pattern sequence is then applied to this circuit. The number n of that test pattern at which errors are perceived at the outputs is identified, in particular with a clock frequency higher than the identified limit frequency of the circuit. The test patterns having the numbers n-m are applied to the circuit with a clock frequency greater than the identified limit frequency of the circuit and the remaining n test patterns are applied to the circuit with a clock frequency lower than the identified limit frequency of the circuit, being applied thereto in succession step-by-step with m=1,2,3 . . . in at least one run of n test patterns. A check is carried out after every run of a test pattern sequence of n test patterns as to whether an error still exist at the output until an error can no longer be documented at the output and a determination is thus made with respect to which test pattern having the number n-m the error is generated within the -circuit. An error tracking technique is carried out in order to localize the cause of error within the electronic circuit.
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申请公布号 |
US4686455(A) |
申请公布日期 |
1987.08.11 |
申请号 |
US19840636925 |
申请日期 |
1984.08.02 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
LASSMANN, REINER;KRUPP, ALBERT;FAZEKAS, PETER |
分类号 |
G01R31/28;G01R31/305;(IPC1-7):G01R15/12;G01R31/00 |
主分类号 |
G01R31/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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