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Table of Contents Declaration of Original Content..................................................................................... 2 Abstract .......................................................................................................................... 3 Table of Contents ........................................................................................................... 4 Table of Figures ............................................................................................................. 6 Achievements.................................................................................................................. 7 Product Applications ...................................................................................................... 9 Description of Operation .............................................................................................. 10 Secure-T ...............................................................................................................................10 Encrypter .............................................................................................................................10 DS1 Framer ..........................................................................................................................12 Control Module ....................................................................................................................13 Clock Divider .......................................................................................................................15 Design and Testing....................................................................................................... 16 Design Hierarchy .................................................................................................................16 Resource Requirements .......................................................................................................17 Design Implementation Decisions/Investigations ................................................................17 Framing...........................................................................................................................................17 Frame Synchronization (Deframe)....................................................................................................17 Encryption/Decryption.....................................................................................................................19 Timing Investigations ......................................................................................................................19 Design Verification...............................................................................................................20 Testing Strategy for Frame Block .....................................................................................................20 Testing Strategy for Deframe Block .................................................................................................20 Testing Strategy for Encryption/Decryption......................................................................................21 Testing Strategy for Entire Secure-T Design.....................................................................................21 IC Characterization Results ......................................................................................... 23 Interface Testing ..................................................................................................................23 Functional Testing................................................................................................................23 References .................................................................................................................... 25 Appendix A – Product Data Sheet ................................................................................ 26 Part No. IM5434........................................................................................................... 27 Appendix B - LIU Datasheet ........................................................................................ 31 Appendix C - Frame Synchronization Algorithm......................................................... 34 Ian Kuon Mark Calder Secure-T Page 4 of 54
