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Free JTAG DFT Assistant for Mentor Xpedition

17 May 2018 – Developed by XJTAG, the free software for the Mentor Xpedition Designer product will significantly increase the design for test and debug capabilities of the schematic capture and PCB design environment. The XJTAG DFT Assistant comprises of the XJTAG Chain Checker, and the XJTAG Access Viewer.

“The XJTAG DFT Assistant provides engineers using Xpedition with a free, easy-to-use interface to check if JTAG chains are correctly connected and terminated at the schematic capture stage, long before the PCB is produced,” said Dave Wiens, Xpedition product marketing manager at Mentor, a Siemens business. “By detecting and correcting these faults earlier, companies can save both time and money.”

The XJTAG DFT Assistant comprises of two key elements: the XJTAG Chain Checker, and the XJTAG Access Viewer. XJTAG Chain Checker identifies common errors in a JTAG scan chain, such as incorrectly connected Test Access Ports (TAPs). A single connection error would inhibit an entire scan chain from working. XJTAG Chain Checker identifies connection errors and reports them to the developer during the design process. Incorrectly terminated TAPs are also identified.

XJTAG Access Viewer overlays the extent of boundary scan access onto the schematic diagram, allowing users to instantly see which components are accessible using boundary scan, and where test coverage could be further extended. Engineers can highlight the nets individually to show read, write, power/ground and the nets that don’t have any JTAG access on the schematic.

While the first prototype is being manufactured, XJTAG DFT Assistant allows engineers to export a preliminary XJTAG project from the Xpedition schematic capture environment to the XJTAG development software, where additional tests can be developed. These can then be used to test real hardware, as soon as it’s available. This provides a vital new capability to electronic engineers everywhere.

This software is free for Xpedition users of VX.2.1 or higher and can be downloaded from XJTAG.

www.xjtag.com/



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