* XJTAG's powerful and easy-to-use Development System can cut costs through
the product life cycle from pre-design to field support and repair
* XJTAG provides the design engineer with early prototype testing of a
circuit that includes BGAs, SDRAMs, Ethernet controllers, video interfaces
etc. XJTAG also enables In-System Programming of FPGAs, CPLDs, flash
* XJTAG scripts are re-usable and portable across different boards due to
XJTAG's device-centric approach enabling a 'fast track' development and
* Early adopters of XJTAG include, among others, ARM, Cambridge Broadband,
IPWireless, Pandora International, Thales Communications UK, and TTPCom.
CAMBRIDGE, England, July 2, 2003 - XJTAG Limited (www.xjtag.com), a
specialist design and test tool developer and part of the Cambridge
Technology Group, has released version 1.0 of its highly acclaimed XJTAG
Development System, designed to cut the cost and shorten the development
cycle of electronic products.
"With the continuing trend towards smaller, more tightly packed circuit
boards and the widespread use of BGA (Ball Grid Array) and chip scale
packaging, design verification and circuit test is becoming a greater and
greater challenge," said Dominic Plunkett, chief technology officer, XJTAG
"Traditional methods of fault location become impossible when many tracks
are inaccessible to oscilloscope probes and logic analysers. Even getting a
processor running might require a large part of the circuit to be
operational before test software can be executed. XJTAG solves this by
utilising the often underused JTAG port allowing the circuit to be tested
with only power and a handful of connections operational."
The XJTAG Development System provides a unique solution that can test JTAG
as well as non-JTAG devices. XJTAG can test a high proportion of the circuit
including BGA and chip scale devices, SDRAMs, Ethernet controllers, video
interfaces, flash memories, FPGAs (Field Programmable Gate Arrays),
microprocessors and many other devices. XJTAG also enables In-System
Programming of FPGAs, CPLDs (Complex Programmable Logic Devices) and flash
The powerful and easy-to-use XJTAG Development System provides a
fully-integrated environment which can migrate seamlessly through the
product life cycle from early design to field support and repair. XJTAG
enables circuit designers to shorten the development cycle and prototyping
process by facilitating early test development, early design validation of
CAD netlists, fast generation of highly functional tests and test re-use
across circuits that utilise the same devices.
XJTAG test scripts are also re-usable and portable across different boards
due to the novel device-centric approach that the designers have adopted.
Re-usable device tests and the abstraction of device tests from both circuit
detail and complexity of JTAG (Joint Test Action Group), mean that designers
can quickly develop systems to debug elements of their designs and to
functionally test early prototypes. The test systems developed can then be
taken forward seamlessly to production testing and through into field
support and repair.
"Our XJTAG Development System is designed by engineers for engineers and
represents a major advance in testing techniques bringing unparalleled
integration, test re-usability and programming flexibility to circuit
developers," added Dominic Plunkett. "Our tools are designed to help circuit
designers, particularly those using BGAs, to minimise the time it takes to
move from a concept to a design that is tested and ready for production."
The XJTAG Development System includes - XJAnalyser, XJEase, XJLink and XJDemo.
XJAnalyser is a powerful tool for circuit visualisation that provides a
simple graphical view of the state of all JTAG pins. Its 'plug and play'
configuration provides instant JTAG chain verification and allows a
developer to interact with the circuit and view and set the values of pins
or buses on devices in the JTAG chain. It also identifies the correct
Boundary Scan Description Language (BSDL) files from its library ahead of
XJEase is the high-level, BASIC-like test description language for
manipulating non-JTAG devices. Unlike other JTAG tools it is device rather
than board-centric. This enables circuit developers to re-use XJEase scripts
in different projects. XJEase also allows the use of loops, jumps and
variables to adapt test sequences to the current state of the circuit.
XJLink is a USB 2.0 hardware module used to connect the computer with the
unit under test and supports multiple JTAG chains. Finally, XJDemo is a
fully populated demonstrator board with tutorial designed to provide the
developer with a rapid understanding of the XJTAG system and how to simulate
Version 1.0 of the XJTAG Development System is available from July 2003 and
is priced extremely competitively. "Our strategy is to price the XJTAG
Development System to encourage multiple sales per company," said Dr Gordon
Hollingworth, head of XJTAG development. "We want developers to share test
scripts and that will only happen when XJTAG is ubiquitous and available on
every hardware and software developer's computer and not just restricted to
Feedback from developers with access to a pre-release version of the new
Development System has been very positive. One example, ARM in Cambridge,
invested in XJTAG for use in the design and testing of future Integrator
development boards and reduced the board development cycle significantly due
to the ability to re-use existing test scripts. Other early adopters of
XJTAG include Alphamosaic, Cambridge Broadband, IPWireless, Pandora
International, Thales Communications UK and TTPCom.
"Whilst XJTAG offers huge potential benefits to product designers, test and
field engineers, there has also been significant interest from manufacturers
of non-JTAG devices keen to build design for test (DFT) capability into
their components," added Plunkett. "Just as JTAG device manufacturers
provide BSDL files for developers, it is possible, and much more cost
effective than redesigning a device to make it JTAG-enabled, that non-JTAG
device manufacturers could provide a XJTAG script with their components.
This would be attractive to developers and a good selling point for a device
For more information about Version 1.0 of the XJTAG Development System,
please contact XJTAG Limited, The Irwin Centre, Scotland Road, Dry Drayton,
Cambridge CB3 8AR, U.K. Telephone +44 (0) 1954 211244, facsimile +44 (0)
1954 211565 or email firstname.lastname@example.org. Alternatively visit www.xjtag.com.
About XJTAG (www.xjtag.com)
XJTAG Limited is a specialist design and test tool developer. Its JTAG
(Joint Test Action Group) development system offers a competitive solution
for designers and developers of electronic circuits. Utilising XJTAG allows
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 utilise
the same devices. The company is based in the U.K. at The Irwin Centre, Dry
Drayton, Cambridge, U.K.
About the Cambridge Technology Group (www.cambridgetechgroup.com)
Cambridge Technology Group is a holding company with three wholly owned
subsidiaries - Adiabatic Logic Limited, Cambridge Technology Consultants
Limited and XJTAG Limited. Adiabatic Logic (www.adiabaticlogic.com) was set
up to exploit a portfolio of secured patents in the low power technology
arena. Adiabatic Logic's patented Intelligent Output Driver (IOD), launched
in May 2003, delivers significant (up to 75%) power savings in chip I/O for
portable devices such as laptop computers, personal digital assistants
(PDAs), MP3 players and smartphones.
Cambridge Technology Consultants (www.camtechconsultants.com) offers its
clients - companies such as ARM, AT&T, BOC Edwards, Celoxica, Co-operative
Group, Fujitsu, Marconi, Mitsubishi Electric and IPWireless - a broad range
of services from high-end applications to innovative product development and
technical consultancy skills. For ten years, its multi disciplinary team of
hardware and software engineers have provided cost-effective solutions from
concept through to pre-production.
What is JTAG?
Advances in silicon design, such as increasing device density and, more
recently, ball grid array (BGA) and chip scale packaging, have reduced the
efficacy of traditional electronic circuit testing methods. In order to
overcome these problems and others; some of the world's leading silicon
manufacturers combined to form the Joint Test Action Group (JTAG). The
findings of this group were used as the basis for the Institute of
Electrical and Electronic Engineers (IEEE) standard 1149.1: Standard Test
Access Port and Boundary Scan Architecture and subsequently the standard
became known as JTAG.
Media contact (for XJTAG datasheets and/or photography):
Martin Brooke Associates
Tel: +44 (0) 1223 264050
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