Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Boundary scan description language (BSDL) is a description languageforor electronics testing using JTAG. It has been added to the IEEE Std. 1149.1, and BSDL files are increasingly well supported by JTAG tools for boundary scan applications, and by test case generators.BSDL is a VHDL subset. Each BSDL file describes one version of an IC and has many package pin maps as are available for a particular die. This is necessary because, for example, two different BGA packages will have different balls; even if the ball has the same name it may be bonded to a different signal on the other package, and sometimes bondings change between revisions.

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