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- W21196702 abstract "Microprocessor units caught with speed failure are becoming more and moreeminent as the fabrication process shrinks according to Moore’s Law. FailureAnalysis (FA) engineers confront the problem using Critical Path Debugmethod utilizing special IC (Integrated Circuit) test system capable of testingvarious types of microprocessor’s failure. But such test system does not comecheap, each costing more than USD 2.5 million. In order to bring down cost, asystem to pull test data and locate critical path using personal computer (PC) isproposed.This system is built upon Intel Penang’s Internal FA tool called PersonalComputer Failure Analysis (PCFA) which utilizes a host computer to collectdata from Device Under Test (DUT) through TAP (Test Access Port). As PCFAwas not originally build up to carry out critical path debug, hardwaremodification and software enhancement is required. The hardware modificationinvolves platform rework and external FSB (Front Side Bus) frequency injection. By doing so, microprocessor speed can be controlled during testpattern run. The software is modified to include critical-path-related testsubroutines housed inside PCFA library. These subroutines collect, compareand display test results. The program is tested with a series of Intel’smicroprocessors to ensure that it is working as intended for current and futureproducts. 1000 test vector results are recorded from both PCFA and ATE’ssystem to carry out compare verification.100% matched is observed for all thetest vector results thus prove the functionality of the project “Critical Path FaultIsolation Debug for Intel Microprocessor Using Personal Computer”.The PCFA hardware cost only USD 10 thousand which is 0.4% of the cost of anIC test system and is currently capable of running shmoo, performing cache test,I/O pin test and also macro Fault Isolation (FI) for each test pattern in a coupleof seconds. Although in terms of functionalities; complex IC test system willcertainly have the upper hand but in the case of solving common generalmicroprocessors’ failures, system based test solution is much more costeffective." @default.
- W21196702 created "2016-06-24" @default.
- W21196702 creator A5002211829 @default.
- W21196702 date "2009-04-01" @default.
- W21196702 modified "2023-09-27" @default.
- W21196702 title "Software Modification in a Fault Analysis Tool for Critical Path Debugging" @default.
- W21196702 hasPublicationYear "2009" @default.
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