<p>According to the invention, a circuit that is capable of automated scan testing is disclosed. Included in the circuit are a cryptographic engine, a digital circuit, an input pin, and an output pin. The cryptographic engine capable of performing at least one of encryption and decryption of one or more digital signals. The digital circuit includes combinatorial logic and a number of memory cells. The memory cells have scan inputs connected serially in a scan chain. The input pin and output pin are coupled to the scan chain. At least one of the input pin and the output pin carries at least some cipher text data of the scan chain.</p>
申请公布号
WO03093844(A8)
申请公布日期
2004.12.23
申请号
WO2003US13761
申请日期
2003.05.02
申请人
GENERAL INSTRUMENT CORPORATION
发明人
PENUGONDA, MADHUSUDHAN, R.;JOHNSON, MICHAEL, W.;SPRUNK, ERIC, J.;TONTHAT, AN