1149 1 1990 Ieee Standard Test Access Port And Boundary Scan Architecture
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Boundary-Scan Test
Author: Harry Bleeker
language: en
Publisher: Springer Science & Business Media
Release Date: 2011-06-28
The ever-increasing miniaturization of digital electronic components is hampering the conventional testing of Printed Circuit Boards (PCBs) by means of bed-of-nails fixtures. Basically this is caused by the very high scale of integration of ICs, through which packages with hundreds of pins at very small pitches of down to a fraction of a millimetre, have become available. As a consequence the trace distances between the copper tracks on a printed circuit board cmne down to the same value. Not only the required small physical dimensions of the test nails have made conventional testing unfeasible, but also the complexity to provide test signals for the many hundreds of test nails has grown out of limits. Therefore a new board test methodology had to be invented. Following the evolution in the IC test technology. Boundary-Scan testing hm; become the new approach to PCB testing. By taking precautions in the design of the IC (design for testability), testing on PCB level can be simplified 10 a great extent. This condition has been essential for the success of the introduction of Boundary-Sc,m Test (BST) at board level.
The Boundary — Scan Handbook
Author: Kenneth P. Parker
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
In February of 1990, the balloting process for the IEEE proposed standard P1149.1 was completed creating IEEE Std 1149.1-1990. Later that summer, in record time, the standard won ratification as an ANSI standard as well. This completed over six years of intensive cooperative effort by a diverse group of people who share a vision on solving some of the severe testing problems that exist now and are steadily getting worse. Early in this process, someone asked me if 1 thought that the P1l49.l effort would ever bear fruit. 1 responded somewhat glibly that "it was anyone's guess". Well, it wasn't anyone's guess, but rather the faith of a few individuals in the proposition that many testing problems could be solved if a multifaceted industry could agree on a standard for all to follow. Four of these individuals stand out; they are Harry Bleeker, Colin Maunder, Rodham Tulloss, and Lee Whetsel. In that I am convinced that the 1149.1 standard is the most significant testing development in the last 20 years, I personally feel a debt of gratitude to them and all the people who labored on the various Working Groups in its creation.
Design of Hardware/Software Embedded Systems
Author: Eugenio Villar Bonet
language: en
Publisher: Ed. Universidad de Cantabria
Release Date: 2001
Este libro presenta los desafíos planteados por las nuevas y sumamente poderosas tecnologías de integración de sistemas electrónicos, que están en la base de los cambios sociales hacia lo que llaman la Sociedad de la Información; en la que los dispositivos electrónicos se harán una parte incorporada de la vida diaria, encajados en casi cada producto. Es necesario un conocimiento cuidadoso de los desafíos para aprovechar la amplia gama de ocasiones ofrecidas por tales capacidades de integración y las correspondientes posibilidades de diseño de sistemas electrónicos.