What is JTAG/Boundary Scan?

JTAG/Boundary Scan is probably the most ingenious test process, which like ICT, tests within the circuit and detects structural fault locations by setting thousands of test points - even under BGAs - with only four test bus lines. JTAG/Boundary Scan essentially means “testing at the periphery (boundaries) of a circuit”.

In addition to the core logic and the test points, an IC (Integrated Circuit) also features some test control logic. The test points are integrated between the core logic and the physical pins of the IC. This special IC architecture and the testbus connections among each chip are preconditions for the use of JTAG/Boundary Scan.

Not all components on the board have to be testable in order to use the JTAG/Boundary Scan philosophy. Even if only one component meets the JTAG/Boundary Scan requirement, JTAG/Boundary Scan can be used for certain test applications.

Decide Now for the JTAG/Boundary Scan Technology Leader!

Most experienced – GOEPEL electronic is the JTAG/Boundary Scan pioneer and highly reputed vendor since 1991
Global presence – Five subsidiaries worldwide and a network of more than 350 sales and support experts
Innovation – Continuous market introductions of numerous awarded JTAG/Boundary Scan products
Versatility – Biggest portfolio of more than 250 products for your individual test solution
Market leader – Over 7,000 JTAG/Boundary Scan system installations
Flexibility – Integration of JTAG/Boundary Scan in existing systems of all ATE vendors

Overview of the Capabilities of the JTAG/Boundary Scan Technology

Advantages of the JTAG/Boundary Scan Technology

Usable throughout the entire product life cycle
No mechanical access necessary - while still offering very high test coverage
Accelerates development of new products - reduced time to market
Test program generation in a short time - fast turnaround, e.g. for design changes
Improved product quality by simultaneous testing and programming within one program sequence

Cost Savings with the JTAG/Boundary Scan Technology:

Low initial investment and cost of maintenance compared to other test technologies
No storage costs
Minimal running costs
Fast return on investment

Testing Capabilities with the JTAG/Boundary Scan Technology:

Test particular components
Test the connections among the ICs on the board
Test the function of complete boards under operating conditions

Applications with the JTAG/Boundary Scan Technology:

Testing
Design verification
In-system programming
Debugging
Emulation

GOEPEL electronics Ltd., Unit 1A, The Old Granary, Westwick, Cambridge, CB24 3AR
Phone +44-1223-858298, Fax +44-1223-257800, goepel.co.uk