“For circuit board manufacturers, self-healing can mean self-defeating,” said Kent Zetterberg, author of the eBook and a product manager at ASSET. “Self-healing doesn’t mean that the bus restores itself when it has a structural fault like a short or an open. It actually downgrades its performance. As a result, functional test won’t detect the faults, but users will and they will probably not be too satisfied and return the product. JTAG-based boundary-scan tests diagnose the problem down to the pin level so the manufacturer can fix it before users receive the product.”
The new eBook is titled “JTAG Diagnostics for Intel QUP Structural Defects”. It is available now as a free download from the eResources center on the ASSET website at: http://www.asset-intertech.com/Footer/eBooks/JTAG-Diagnostics-for-Intel-QPI-Structural-Defects .