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I know in ATPG chain simulation is done to test integrity of scan chains and serial is done to test correctness shifting.
My question is while checking of chain itself, if there is any problem with shifting of data. it will fail right? then what is need of doing serial simulation?
I'm new to ATPG simulation debug. I heard from my colleague saying there is some kind of shadow path, because of that parallel simulation is failing but serial is passing. Can anyone please give me an idea of what is shadow path and how it will effect the parallel simulation.
I am a beginner in DFT field so can anyone elaborate in detail steps to how to debug a pattern mismatch during ATPG simulation at SOC level - ( I know a couple of types of simulations Readback and TorteSim) and please let me know any common mismatches you see regularly.