Embedded infrastructure IP to optimize chip-level manufacturing test and debugging has become common practice. However, adopting the same approach for boards and systems requires a different family of infrastructure IP. This tutorial introduces a structured, standards-based approach to PCB self-test and FPGA configuration and presents how it can optimize manufacturing test and debugging, leverage ASIC level DFT, and support configurability, especially in today?s reconfigurable products.
Today?s complex IC relies on scan and BIST for the majority of the test coverage achieved. Software driven functional self-test for PCBs and Systems now requires a solid foundation of scan-based self-test due to the complexity and skill required to achieve high fault coverage and useful diagnostics. Off-the-shelf infrastructure IP based on IEEE standards will enable system designers to build in the field re-configurable and high quality self-testable products with a minimum of engineering time and effort. Furthermore, the convergence of the FPGA configuration standard and scan-based test presents the designers new opportunities to increase fault coverage, lower their manufacturing test costs, field support costs, and extend their products? useful life with in-the-field updates. Infrastructure IP for the board and system level will save engineering time and will reduce design risk since they are pre-engineered and leverage IEEE standards. The standards-based solutions are re-usable, from one phase of a single product life cycle to the next, and from one product design to the next.