Diagnosys XJTAG: Highly competitive Boundary Scan solution for PCB designers and test engineers

Diagnosys XJTAG Solutions

The XJTAG series of products offers compliant boundary scan development tools. Its JTAG (Joint Test Action Group) development system offers a highly competitive solution for designers and developers of electronic circuits. Utilizing XJTAG allows the circuit development and prototyping process to be shortened significantly by facilitating early test development, early design validation, fast development of functional tests and test re-use across circuits that use the same devices.

XJTAG was the first boundary scan solution to offer a common platform for use by design and development engineers, test engineers, contract manufacturers and field test engineers, providing testing of not only JTAG-enabled devices but non-JTAG devices as well.


JTAG is a technology that has existed for over a decade. However, its potential as a testing and programming tool is only just beginning to be fully realized.

Advances in silicon design such as increasing device density and, more recently, BGA packaging has reduced the efficiency of traditional testing methods.

In order to overcome these problems, some of the world's leading silicon manufacturers combined to form the Joint Test Action Group. The findings and recommendations of this group were used as the basis for the Institute of Electrical and Electronic Engineers standard.

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XJTAG Applications

Connection testing and In System Programming (ISP) are the two applications most commonly associated with JTAG. However the technology has far more to offer.

Non-JTAG-compliant sections of a circuit can be tested by using the interconnecting nets between the devices in the JTAG chain and other devices in the circuit.

XJTAG has been designed to unlock the potential of JTAG, with its development system of software products and XJLink USB-JTAG connector or an XJTAG PXI module.