I need to come up to speed really fast on the basics of XScale microarchitecture and how the VTune update for it works. Can you suggest or recommend any books or URLs to help me out?
I would recommend you read the Intel XScale? Microarchitecture for the PXA250 and PXA210 Applications Processors User's Manual. Click here to get it. For information on the VTune update for XScale click here. If you have any specific questions please feel free to post them here.