New ASSET InterTech eBook explains how QPI self-healing bus can hinder circuit board quality

Dec 17, 2014 -- According to a new eBook from ASSET® InterTech, circuit boards with self-healing buses like Intel® QuickPath Interconnect (QPI) can be a challenge to test and assure board quality unless JTAG boundary-scan (IEEE 1149.1) tests are included in manufacturing. ASSET ( www.asset-intertech.com) is the leading supplier of debug, validation and test tools based on embedded instrumentation for software, chips and systems.

“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® QPI 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-Structrual-Defects .

Other informative eBooks, white papers and videos on issues relating to software debug, and chip, board and system validation and test can be downloaded from the ASSET website at: http://www.asset-intertech.com/eResources

About ASSET InterTech

ASSET InterTech is a leading supplier to the electronics industry of tools based on embedded instrumentation. Its SourcePoint™ debug and trace platform and the ScanWorks® platform for embedded instruments overcome the limitations of external test and measurement equipment. SourcePoint applies trace instrumentation embedded in code to debug software while ScanWorks applies instruments embedded in chips to test and validate chips and circuit boards during design and manufacturing. With ASSET’s software/hardware tools, engineers can quickly debug firmware and then diagnose how it interacts with hardware. ASSET InterTech is located at 2201 North Central Expressway, Suite 105, Richardson, TX 75080.

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