Hardware

JTAG And Boundary Scan Testing

Posted 4 Sep 2002 at 22:22 UTC by steve Share This

Ever wonder what those JTAG ports on your microcontroller are good for besides just a way to download software? Basically JTAG gives you the equivalent of the physical test points that used to be present on printed circuit boards before the days of multi-layer boards. ChipCenter.com has published a very good JTAG tutorial. And, if you want more detail, TI offers a 145 page JTAG Primer (PDF format).

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