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I don't think I need any new parts, so I'm not really concerned with how genuine they are.  I just need to troubleshoot and repair existing boards.  We've purchased high quality reball and x-ray verification equipment, but the solution of "take the whole thing off and reball everything" is not a great one because reballing can cause more issues than it solves, and it doesn't always work. 

We need to perform boundary scans to test pin connectivity so that we can be more targeted in our repairs.  I'm building a netlist for our boards, but it's going to be much harder to test the pins under that chip if I can only communicate with the 4 other parts around it.  If we can get a BSDL file for that chip, then it'll be much easier to test and repair the boards to which they are attached.