Testing Times

The Difference Between a Dead FPGA and a Disconnected FPGA One of the most uncomfortable moments during FPGA bring-up is not when something clearly fails. It’s when nothing seems to happen at all. No configuration. No I/O activity. No obvious response. At that point, a dangerous assumption often creeps in: “The FPGA might be dead.” In practice, that conclusion is far more common — and far more wrong — than most teams would like to admit. Why “Dead FPGA” Is Usually the Wrong First Diagnosis FPGAs today are remarkably robust devices. Genuine silicon failures do happen, but they are relatively rare compared to the number of boards that initially appear non-functional. Much more often, the problem lies somewhere else: A missing or incorrect connection A configuration pin not behaving as expected A power or reset condition that never quite reaches the device A signal that is assumed to be present, but isn’t From the outside, all of these scenarios can look identical. The FPGA doesn’t respond. The board appears lifeless. Progress stalls. The Cost of Guessing Wrong Treating a disconnected or inaccessible FPGA as “dead” has consequences. Boards get swapped unnecessarily. Time is spent reworking designs that are logically correct. Confidence erodes, not just in the hardware, but in the process itself. In teams working to tight schedules or limited prototype availability, this kind of misdiagnosis quickly turns into a delivery risk. What Engineers Actually Need at This Point At this stage, progress doesn’t come from more speculation. It comes from evidence. The critical questions are simple: Can the FPGA be accessed at all? Are configuration and control paths intact? Is the device electrically connected the way we believe it is? Until those questions are answered, behaviour-based debugging is premature. Why Behaviour Alone Isn’t Enough An FPGA that doesn’t configure, doesn’t toggle I/O, or doesn’t respond to software is not necessarily faulty. It may simply be unreachable. Without a way to distinguish between absence of behaviour and absence of connectivity, teams end up debugging symptoms rather than causes. This is the point where experienced teams pause and change approach. Instead of asking: “Why isn’t it working?” They ask: “What can we prove about this board right now?” Turning Uncertainty Into Direction Once basic accessibility and connectivity are established, everything else becomes easier. If the FPGA is provably reachable, attention can return to design, configuration, and timing with confidence. If it isn’t, the problem is no longer abstract, it’s localised and actionable. Either way, progress resumes. Closing Thought A dead FPGA and a disconnected FPGA can look identical from the outside. The difference is not discovered by waiting for behaviour, it’s discovered by establishing proof. The teams that move fastest through bring-up are usually the ones that make this distinction early, before guesswork sets the direction. FPGA Board-Level Tip of the Week Always provide a reliable way to prove FPGA accessibility before relying on behaviour. Before assuming a configuration or design problem, ensure there is a clear, repeatable method to confirm that the FPGA can be accessed electrically and structurally. Why it matters Connectivity issues often masquerade as device or design failures Early proof of access prevents unnecessary board swaps and redesigns Confidence in basic accessibility accelerates all subsequent debug What to watch out for Configuration and JTAG pins that are assumed to be connected but aren’t Reset or mode pins that prevent access under certain conditions Designs that only allow access once the FPGA is fully configured Being able to prove that an FPGA is reachable is often the single most important step in early bring-up.

What FPGA Board Bring-Up Really Looks Like (Not the Marketing Version) FPGA board bring-up is often described as a clean, linear process. Power on. Program the device. Run a simple test. Iterate. In reality, experienced engineers know it rarely unfolds that way. Bring-up is messy, uncertain, and often emotionally taxing — not because the tools are bad, but because real hardware doesn’t politely explain what’s wrong. The Hidden Anxiety of Early Bring-Up One of the least discussed aspects of FPGA bring-up is doubt. When a board doesn’t behave as expected, the immediate questions are rarely technical. They’re existential: Is the FPGA still alive? Did something get damaged? Is this a design issue — or a hardware fault? Did we just lose a development board? This uncertainty is a quiet reality many teams don’t think about until it matters. The real challenge is not answering these questions quickly — it’s knowing how to answer them. The Role — and Reality — of FPGA Development Boards To accelerate development, many teams quite sensibly start with FPGA development boards. A key advantage of these boards is simple but powerful: the design has already been proven by someone else. Power, configuration, clocking, and core interfaces are known to work, allowing engineers to focus on architecture, firmware, and system behaviour rather than first-principles hardware uncertainty. When development boards are selected carefully, they can offer even greater value, particularly those that provide full design data, including schematics, layout and BOM, as well as support for high-speed programming and example production-line test solutions. They allow teams to: Reuse validated power and configuration schemes Transition more quickly from evaluation hardware to a custom prototype Drastically reduce the number of board iterations required before reaching a production-ready PCBA This stage also presents an often-overlooked opportunity: test procedures can be developed in parallel with FPGA design, rather than deferred until hardware issues appear. For many projects, this makes FPGA development boards a significant time saver and well worth the cost. Because the hardware is already known-good, teams can begin defining access methods, programming flows, and basic structural checks, that will later be reused when custom hardware becomes available. When “It Doesn’t Work” Isn’t a Diagnosis When custom boards arrive, the statement “the board doesn’t work” is not actionable. What teams really need to know is: Is the FPGA responding at all? Are configuration paths intact? Are signals actually connected as expected? Is the issue localised or systemic? Without structured ways to answer these questions, bring-up becomes trial-and-error, swapping boards, reprogramming devices, and hoping behaviour changes. What Seasoned Teams Do Differently Teams that bring up FPGA hardware repeatedly tend to behave differently. They prioritise: Early structural confidence Repeatable access paths Ways to isolate board faults from design issues Evidence they can trust before escalating This isn’t about adding complexity, it’s about reducing uncertainty early, when every assumption is expensive and every delay compounds. Closing Thought FPGA bring-up is not just about making something work. It’s about proving why it works — or why it doesn’t. The teams that succeed fastest are usually the ones that replace guesswork with evidence, especially when hardware is new, fragile, and not easily replaced. FPGA Board-Level Tip of the Week Plan for testing and programming before the FPGA is configured. Configurable devices like FPGAs offer their greatest test access before the device is fully configured. Why it matters Unconfigured FPGAs provide broad I/O control for structural testing Early testing can catch assembly and connectivity issues before design complexity masks them Programming and test workflows are more reliable when structural confidence comes first What to watch out for Once configured, unused I/O often becomes unavailable for test Relying solely on post-configuration testing can reduce coverage significantly Establishing test and access paths early makes later debug faster and safer Avoid relying on internal pull resistors in FPGAs for correct board operation Good FPGA bring-up starts before the first application bitstream is loaded.

Why Probing an FPGA Board Is Often the Wrong First Instinct When an FPGA doesn’t behave as expected, the instinct to probe is almost automatic. Oscilloscope out. Logic analyser attached. Let’s see what’s going on. But on FPGA boards, probing is often the least efficient first step. Physical Access Has Changed High-density packages, BGAs, and tightly coupled interfaces mean: Many critical signals are unreachable Others are sensitive to loading Some faults cannot be observed directly at all Probing can confirm what you already suspect, but it rarely provides complete answers. Probing Answers “What”, Not “Why” Probes (if you have access) show signal behaviour, not intent. They can tell you: A signal toggles A rail is present A clock exists They don’t tell you: Whether every connection is correct Whether a pin is actually connected Whether the behaviour matches the design intent That distinction matters during bring-up. A More Useful First Question Experienced FPGA engineers often pause and ask: “What can I prove about this board before I chase behaviour?” That shift, from observation to proof, saves time and reduces guesswork. Closing Thought Probing is still valuable. It’s just rarely the best starting point. On complex FPGA boards, establishing confidence in connectivity and structure first often makes every subsequent debug step faster and more reliable. FPGA Board-Level Tip of the Week Treat the JTAG chain as a high-speed signal path, not a low-speed afterthought. Although JTAG is often thought of as “slow control”, poor JTAG chain layout can create failures that block testing entirely, or worse, cause intermittent behaviour that’s hard to diagnose. Why it matters JTAG clocks commonly run at 10–30 MHz, with some JTAG chains running significantly faster than this Noise, skew, and poor termination can corrupt scan data A marginal JTAG chain undermines all higher-level debug and test What to watch out for Route TCK, TMS, TDI, and TDO consistently and avoid unnecessary stubs Do not tie nTRST directly to ground, this can disable the entire chain Correctly terminate TCK and TDO, this means adding more than just a pull resistor A reliable JTAG chain doesn’t just enable testing, it creates confidence in every conclusion you draw from it.

The Silent Failures Between FPGA Pins and the PCB Some of the most frustrating FPGA bring-up problems share a common trait: silence. No error messages. No obvious symptoms. Just behaviour that doesn’t quite make sense. These issues don’t originate inside the FPGA design. They live quietly in the space between the FPGA package and the rest of the board. Why These Failures Are So Hard to Spot FPGA boards rely on: High-density pinouts Multiple I/O banks Fine-pitch routing Tight assembly tolerances This contributes to many failure modes that are electrically subtle but functionally disruptive: Single-pin opens Incorrect pull resistors Mis-stuffed resistors Marginal solder joints Pin swaps that “almost” work Because the FPGA is still largely functional, these faults often masquerade as design or timing problems. The Illusion of Partial Success One of the most dangerous bring-up traps is partial success. Some I/O works. Some interfaces respond. Others don’t. This creates a false narrative: “The FPGA is mostly fine, it must be a corner-case design issue.” In reality, inconsistent behaviour on a board or between boards is often the strongest signal that something is wrong at the board level. Why Probing Isn’t Always the Answer Probing feels reassuring, but on FPGA boards it has limits: Physical access is restricted Loading effects distort signals Not every pin can be reached safely The result is often more uncertainty, not less. Closing Thought Silent failures are dangerous because they waste engineering intuition. They push teams deeper into design analysis when the problem is physical. Being able to prove connectivity and intent early changes the entire tone of FPGA bring-up. FPGA Board-Level Tip of the Week Specify and use JTAG-capable devices wherever possible. Design-for-testability starts with device selection. The more JTAG-capable devices that surround your FPGA, the more visibility and control you gain when things don’t behave as expected. Why it matters JTAG devices allow direct control and observation of board-level nets Test coverage increases dramatically when logic is surrounded by controllable I/O Faults can be isolated without relying on physical probing What to watch out for Mixing JTAG and non-JTAG devices is unavoidable, but excessive reliance on non-JTAG logic reduces coverage High-speed or AC-coupled nets may require IEEE 1149.6-capable pins on both sides of the coupling Early device choices directly affect how diagnosable the board will be later Good FPGA bring-up is often decided long before the first bitstream is loaded.

Why FPGA Simulation Success Doesn’t Guarantee Hardware Success If you’ve worked with FPGAs for any length of time, this scenario will feel familiar. The design simulates cleanly. Timing closes. The bitstream builds without complaint. And yet, when the board powers up, something doesn’t behave as expected. This isn’t a failure of FPGA tools or methodology. Today's FPGA design flows are extremely mature. The issue lies elsewhere, in the often-underestimated gap between a correct FPGA design and a working piece of hardware. Where Simulation Stops Helping Simulation answers an important question: Is the FPGA design logically correct? What it does not answer is a different, equally important question: Is the FPGA correctly connected, powered, and behaving as part of a real system? Once a design leaves simulation and meets a physical PCB, it becomes subject to realities no simulator can see: Connectivity errors Assembly defects Power sequencing issues Incorrect pull-ups or terminations Subtle opens, shorts, or pin swaps None of these appear in a waveform. When a “Dead FPGA” Isn’t Dead One of the most time-consuming moments in FPGA bring-up is uncertainty. An FPGA that doesn’t configure, doesn’t toggle I/O, or doesn’t respond as expected is often labelled as “dead”. In practice, the silicon is frequently fine. The problem lives somewhere between: FPGA pins PCB traces Surrounding components At this point, engineers often reach for probes but modern FPGA boards make physical access increasingly difficult. High-density packages, fine-pitch routing, and sensitive high-speed signals turn probing into a slow and sometimes risky exercise. The Blind Spot in FPGA Workflows This isn’t a criticism of FPGA vendors. FPGA tools are rightly focused on: RTL correctness Timing closure Resource utilisation Functional behaviour What they intentionally do not focus on is board-level visibility. That responsibility sits with the system designer and it’s often where FPGA projects lose time and confidence. There’s a point in every FPGA project where the question is no longer: Is my design correct? but instead: What can I prove about this hardware? That transition is rarely explicit and often underestimated. Closing Thought Simulation remains essential. It’s the foundation of reliable FPGA design. But the moment an FPGA design touches a PCB, a new class of problems appears problems that require different forms of visibility and evidence. Knowing where simulation ends and where board-level reality begins, is one of the most valuable skills an FPGA engineer develops. Next week: We’ll look at the silent failures that occur between FPGA pins and the PCB, and why they can be so hard to detect.

Find Out How Boundary Scan Shortens Board Bring-Up by Weeks, Not Days Why Early Hardware Visibility Eliminates Guesswork and Keeps Bring-Up on Schedule Intro Board bring-up is where schedules quietly slip. A custom board arrives on the bench. It doesn’t boot. Nothing obvious appears wrong. Power rails look good. Clocks are present. Yet progress stalls. At this stage, teams often lose days, or weeks, not because the problem is complex, but because they lack clear visibility into the hardware. Boundary scan changes that dynamic by making hardware behaviour visible early, before software becomes a dependency. The Challenge When a new board fails to boot, engineers are often forced into an inefficient and frustrating loop: Probe signals with limited physical access Rewrite or instrument firmware Swap components or boards Make educated guesses On boards built around CPUs, GPUs, FPGAs, and SoCs, the challenge is compounded by device packaging such as dense BGAs and fine‑pitch components, together with buried PCB interconnects that are inaccessible to traditional probe-based testing. Critical connections disappear beneath packages and into inner layers, leaving teams unsure whether they are dealing with a hardware fault or a software issue. Without a structural test method, uncertainty dominates and uncertainty is what turns bring-up delays into schedule risk. The Turning Point Boundary scan breaks this cycle by validating hardware connectivity before software is functional. By using the JTAG interface already present on CPUs, GPUs, FPGAs, and SoCs, engineers can verify interconnects, device-to-device links, and assembly integrity without relying on firmware or extensive probing. With boundary scan in place, teams can: Eliminate hardware uncertainty early Separate electrical issues from firmware problems Focus debugging effort where it actually belongs Avoid unnecessary rework and board swaps Bring-up shifts from guesswork to structured validation. Why It Works Functional testing is designed to exercise behaviour, not to prove physical connectivity. During bring-up, that distinction is critical. Relying solely on functional tests introduces two major risks: Hidden connectivity faults – Cold solder joints, marginal opens, and partial connections can appear to function correctly once software is running. These issues often resurface later as intermittent failures, costing weeks of investigation. Poor fault insight – When functional tests fail, they rarely indicate where the fault is located. Engineers lose time instrumenting software or probing blindly, slowing progress even further. Boundary scan addresses these gaps by validating static connectivity directly, at low speed, before software or high-speed signalling can obscure underlying problems. Key advantages: Immediate clarity on whether the hardware is fundamentally sound Deterministic diagnostics that identify what failed and where Earlier fault isolation, when fixes are fastest and least disruptive Reusable test assets that carry forward into later stages Rather than replacing functional testing, boundary scan establishes a solid hardware foundation that makes software debug more efficient. Results Teams that use boundary scan during board bring-up consistently report: Weeks saved during initial bring-up, not just days Faster differentiation between hardware and software issues Fewer unnecessary board spins and rework cycles Smoother transitions from evaluation to prototype Greater confidence moving designs toward production When boundary scan tests are already proven on a vendor’s development board, those same tests can migrate directly onto the customer’s prototype, further accelerating progress and reducing risk. Take the Next Step See how boundary-scan testing shortens board bring-up and keeps projects on schedule. Explore more than 100 real-world success stories. Check out 100+ case studies. Learn how early hardware visibility can prevent bring-up delays on your next design. Try boundary-scan on your own board for free.

Find Out Why Development Boards Should Ship with Proven Boundary Scan Tests How Built-In Hardware Validation Accelerates Platform Adoption and Reduces Support Risk Most development boards do an excellent job of showcasing silicon capability. They demonstrate performance, features, and software enablement clearly and convincingly. What far fewer development boards provide is confidence. Once engineers move beyond initial evaluation and start building real hardware around a platform, a different set of questions emerges. At that point, performance matters less than trust — trust that the board is electrically sound, that interconnects are correct, and that failures can be diagnosed quickly and accurately. This is where proven boundary scan tests change the role of a development board entirely. The Challenge When a development board ships without boundary scan tests, the customer inherits uncertainty. Are all device-to-device connections correct? Is a failure caused by hardware, software, or assembly? Can the board itself be trusted as a reference? As CPUs, GPUs, FPGAs, and SoCs continue to increase in pin count and integration, these questions become harder to answer using functional testing alone. Dense BGAs, fine-pitch devices, and buried interconnects remove physical access just when engineers need visibility most. Without a structural test method, every failure risks becoming a time-consuming investigation, and every uncertainty increases support load for the vendor. The Turning Point Providing validated boundary scan tests alongside a development board changes this dynamic immediately. With proven tests in place, engineers can verify board integrity as soon as the hardware is powered and connected, often before any firmware is running. Boundary scan tests enable: Immediate verification of board interconnects Deterministic fault isolation on non-booting systems Confident hardware validation without relying on software Clear separation of hardware issues from software issues The development board stops being a black box and becomes a known-good reference. Why It Works Functional tests are designed to exercise behaviour, not to prove physical connectivity. On complex platforms, that distinction matters. Relying solely on functional testing introduces two fundamental risks: Hidden connectivity faults – Cold solder joints, marginal opens, and partial connections can appear to function correctly under normal operation. These issues often surface later as intermittent failures, creating costly debug cycles and unnecessary silicon escalations. Poor diagnostic insight – When functional tests fail, they rarely indicate where the fault resides. Engineers are left guessing, probing, or writing additional tests—slowing progress and increasing frustration. Boundary scan addresses these gaps by validating static connectivity directly, at low speed, before software or high-speed signalling can mask underlying issues. Key advantages: Immediate hardware confidence for customers evaluating the platform Clear, repeatable diagnostics that identify what failed and where Reduced false silicon escalations and support tickets Reusable test assets that scale from development boards to customer designs Stronger platform credibility as a reference for correctness Rather than replacing functional testing, boundary scan complements it, providing the structural foundation that makes higher-level validation reliable. Results Vendors that include proven boundary scan tests with their development boards will see a measurable shift in how their platforms are perceived and adopted. In practice, including proven boundary scan tests with development boards leads to: Faster customer progress beyond initial evaluation Fewer support escalations driven by hardware uncertainty Reduced time spent diagnosing non-booting boards Higher confidence in reference designs and development platforms An accelerated transition from development board to prototype, & then into production With validated test capability built in, a development board becomes more than an evaluation tool. It becomes a trusted reference for correctness. Boundary scan moves into a default platform expectation, establishing a clear baseline for trust, validation, and adoption. Take the Next Step See how advanced boundary-scan testing helps products reach market faster. Explore more than 100 real-world success stories. View 100+ case studies. Learn how proven hardware validation can reduce risk. Try advanced boundary-scan on your own board — free.

Find Out Why Boundary Scan Belongs in Every CPU, FPGA, and SoC Development Board When semiconductor vendors talk about accelerating adoption of new devices, the conversation usually centres on performance, power efficiency, and software enablement. All of these matter, but they are not what ultimately determines whether a device makes it from evaluation into production. What matters just as much is how confidently engineering teams can validate hardware early. As boards built around CPUs, FPGAs, and System-on-Chip (SoC) devices grow in complexity and density, the ability to see what is really happening at the hardware level becomes critical. Without that visibility, teams lose time, confidence, and momentum just when pressure to move quickly is highest. The Challenge Boundary scan is often treated as a late-stage manufacturing tool, something to think about only once a design is complete and production is imminent. In practice, this mindset creates risk. As devices increase in pin count and integration, engineers face a fundamental challenge during bring-up and evaluation: Is this a hardware problem, or a software problem? Without early structural insight into interconnects, I/O connectivity, and assembly integrity, answering that question becomes slow and uncertain. Functional tests may run, or partially run, but they rarely provide clear answers about what is connected, what is not, and where a fault actually resides. The Turning Point Boundary scan provides a deterministic way to validate hardware connectivity before software is running, and often before full power-up debug begins. By leveraging the JTAG interface already present on most CPUs, FPGAs, and SoCs, engineering teams can: Validate interconnects and device-to-device connectivity early Verify assembly integrity beneath BGAs and on fine-pitch devices Detect shorts, opens, and stuck-at faults without relying on firmware Separate hardware issues from software issues quickly and confidently This shifts boundary scan from a manufacturing afterthought to an early-stage risk reduction tool. Why It Works Too often, teams assume functional tests alone are enough to confirm solder quality and I/O connectivity, especially on high-speed interfaces and memory devices. In reality, this assumption introduces two major risks. Undetected faults – Cold solder joints, marginal opens, and partial connections can appear to function correctly at speed due to capacitance effects. These hidden faults often degrade over time, leading to intermittent or early-life failures that are extremely difficult and costly to diagnose later. Limited fault insight – When functional tests do fail, they rarely indicate what is wrong or where the fault is located. Engineers are left developing additional tests or probing blindly, turning fault isolation into a slow and reactive process. Boundary scan addresses these gaps by validating physical connectivity directly, at low speed, before firmware or high-speed operation can mask underlying issues. Key advantages: Early hardware visibility during evaluation and bring-up Clear, deterministic diagnostics that show what failed and where Confidence in I/O connectivity on dense, high-pin-count devices Reusable test assets that scale from evaluation through production Reduced adoption risk for new platforms and devices Rather than replacing functional testing, boundary scan complements it—providing the missing structural layer that makes higher-level testing more reliable. Results Teams that integrate boundary scan as part of their CPU, FPGA, and SoC platform strategy report: Faster differentiation between hardware and software issues Shorter evaluation and bring-up cycles Fewer late-stage surprises during production Improved long-term reliability and field performance Greater confidence adopting new devices and platforms By making hardware behaviour visible earlier, teams reduce risk when it is cheapest to do so. Take the Next Step Discover how boundary scan could reduce risk and accelerate adoption of CPU, FPGA, and SoC-based platforms. Explore more than 100 real-world success stories. View case studies. Learn how early hardware visibility can strengthen your next design decision. Try advanced boundary-scan for free on your own board.

Find Out How You Can Bring Complex Processor and FPGA Boards to Life Faster Intro If you’ve worked on building embedded systems, you’ve likely faced this problem before. As boards built around processors, FPGAs, and System‑on‑Chip (SoC) devices become more powerful and more densely packed, test access disappears just when you need confidence most. With pressure to move quickly from prototype to production, traditional testing methods often fail to give you the visibility required to ensure reliability. That’s why more engineers are adopting structured testing approaches that reveal hardware connectivity long before firmware is available, reducing risk and accelerating development. The Challenge You have a board on the bench. Power rails are good. Clocks are present. But the system won’t boot. No firmware output. No LEDs. No clear indication of what’s wrong. For designs built around CPUs, FPGAs, and SoCs, this scenario is all too common. These boards typically include: High‑pin‑count processors, FPGAs, and SoCs High‑speed memories and complex bus interfaces Dense BGA, CSP, or WLP packages with thousands of hidden connections Without visibility into these high‑density interconnects, engineers are forced to guess. Is the device fully soldered? Are memory interfaces connected correctly? Are critical peripherals even reachable? Each unanswered question costs hours, delays schedules, and increases development risk. The Turning Point Structured boundary scan testing gives you a way to answer these questions quickly and safely. By using the JTAG interface already present on most processors, FPGAs, and SoCs, you can verify board-level connectivity and device-to-device links without relying on firmware or physical probing. With this approach, you can: Detect shorts, opens, and stuck‑at faults early Verify solder joints and interconnects beneath BGAs and on fine‑pitch devices Confirm memory buses and peripheral connections before first boot Begin fault isolation immediately, rather than waiting on software This shifts board bring‑up from trial‑and‑error to structured validation. Why It Works Boundary scan operates at low speed and focuses on static connectivity, which is exactly why it is so effective for complex embedded designs. Too often, teams assume functional tests alone are enough to confirm solder quality and I/O connectivity, particularly on high‑speed interfaces and memory devices. In practice, this assumption introduces risk. There are two fundamental limitations with relying solely on functional testing: Undetected faults - Cold solder joints, marginal opens, and partial connections can appear to function correctly at speed due to capacitance effects. These hidden issues often degrade over time, leading to intermittent or early‑life failures that are extremely costly to diagnose once systems are deployed. Limited fault insight - When functional tests do fail, they rarely indicate what is wrong or where the fault is located. Engineers are left to spend significant time developing additional tests or probing blindly, slowing fault isolation and increasing debug cost. Structured boundary scan addresses these gaps by validating physical connectivity directly, before firmware or high‑speed operation can mask underlying issues. Key advantages: Deep visibility into device pins and interconnects where probes cannot reach Early fault detection before firmware or functional tests are available Clear diagnostics, identifying what failed and where Reusable test assets that scale from prototype to production Consistent workflows across development, manufacturing, and in‑field support Rather than replacing functional testing, structured testing complements it, closing the gap between hardware assembly and software validation. Results Teams using structured testing on processor‑ and FPGA‑based boards report: Faster board bring‑up and earlier confidence in hardware integrity Reduced debug time on non‑booting systems Fewer surprises during production ramp‑up Improved test coverage on dense, high‑pin‑count devices Shorter time‑to‑market for complex embedded products By validating hardware earlier, fixes are applied when they are fastest and least expensive. Take the Next Step Discover how you can validate CPU, FPGA, and SoC‑based designs faster using structured testing. Explore more than 100 real‑world success stories. View case studies. Learn how improved hardware visibility can reduce risk on your next design. Start your free evaluation on your own board today.

Find Out How UAV and Drone Manufacturers Are Accelerating Development A leading aerospace technology manufacturer that delivers advanced UAV and drone systems faced growing challenges as the complexity of its next‑generation embedded electronics increased. With rising pressure to meet tighter delivery windows and performance targets, traditional testing methods were no longer fast or flexible enough. To maintain reliability and accelerate development, the engineering team adopted advanced structured testing. The Challenge Modern UAV platforms rely on dense, multi‑layer PCBs powering mission‑critical functions such as guidance, communication, sensing, and control. These boards often include: High‑performance processors Larger FPGAs in BGA packages High‑speed memories and interfaces Fine‑pitch, tightly packed digital circuitry Limited physical test access made it difficult to verify solder joints, interconnects, and logic behaviour, especially under BGAs and high‑density components. The team needed a faster way to validate prototypes and ensure production‑ready quality without relying on slow or labour‑intensive probing. The Turning Point Boundary scan testing enabled engineers to overcome test‑access and time‑to‑market challenges by providing a safe, automated way to verify assembly quality. With this approach, the engineering team could: Detect shorts, opens, and interconnect faults Validate soldering and verify connections beneath BGAs, and on fine‑pitch devices Program memories and programmable logic devices quickly during development and production Reuse test scripts created during prototyping for production units This capability dramatically reduced the time required to prepare UAV electronics for functional testing. Why It Works Advanced boundary scan testing provides a unified method for verifying digital circuitry across development, production, and field‑level validation. Key advantages: High‑coverage testing even under inaccessible BGA devices Fast programming workflows, enabling rapid iteration during development Portable testing hardware, allowing engineers to validate boards in the lab, on production lines, or during field integration Reusable, scalable test assets, supporting multiple designs and product variants This consistency strengthens test strategy across the full UAV electronics lifecycle. Results Faster turnaround during prototype bring‑up Earlier identification of assembly and interconnect issues Improved reliability before functional or environmental testing Simplified production test workflows with reusable scripts Increased confidence during integration of UAV subsystems Structured testing now plays a key role in helping aerospace engineering teams deliver high‑performance UAV electronics within tight project timelines. Take the Next Step Discover how a aerospace and UAV manufacturer improved safety and accelerated their testing. Here is the case study. Book a Free Hands-on Taster Workshop Today.

Find Out How Medical Device Manufacturers Are Taking Testing to the Next Level Medical device manufacturers that deliver life‑saving equipment face growing challenges as their next generation of embedded electronic systems becomes increasingly complex. Traditional testing approaches can not effectively verify dense circuitry. To ensure reliability, improve coverage, and accelerate testing, engineering teams need to adopt a new approach. The Challenge Medical devices demand rigorous verification, especially where high‑voltage subsystems are involved. Ensuring the integrity of control circuitry, signal paths, and programmable logic is essential. Many designs feature: High‑voltage control circuits Fine‑pitch, high‑density components Flash memories, CPLDs, and programmable logic Multi‑layer, densely populated PCBAs With limited physical access and safety‑critical requirements, engineers need a method to validate structural integrity. The Turning Point Advanced structural testing enables engineers to verify correct assembly and quickly adopt the method to: Detect shorts, opens, and stuck-at faults Validate soldering and interconnects across digital device pins, even under BGAs Program flash memories rapidly Begin functional test immediately after programming These tests don't replace functional testing - they complement it. Together, they provide a full lifecycle safety net from prototype to production. Why It Works Advanced boundary scan testing provides a unified, repeatable method that supports development, production, and field validation. Key advantages: Structural verification, improving safety and reducing risk Fast programming of on‑board devices to streamline production throughput Portable testing hardware, for use in development, manufacturing, and at customer sites Test flexibility, allowing reusable scripts across multiple products and revisions This continuity strengthens manufacturers' entire test strategy from design through field deployment. Results Faster isolation of assembly issues Greater reliability and confidence in deployed equipment Advanced boundary scan now supports production helping engineers validate each system with confidence. Take the next step Read a case study from a leading medical manufacturer. Learn how structured testing could improve your own workflow, discover how much test coverage you could achieve. Get your free test coverage report today.

Discover how a Leading Defense Manufacturer Cut Debug & Test Time by 20% Intro A leading defense manufacturer that delivers complex, high-performance electronic platforms soon discovered that traditional testing methods simply couldn’t keep pace with the density of their modern designs. But as the company engineered its lastest embedded platform, traditional testing methods simply couldn’t keep up with the complexity of their densely populated boards. To accelerate development and improve test coverage, they turned to structured testing. The Challenge The defense manufacturer was developing a next‑generation embedded platform with high levels of integration and dense digital architecture. The complexity of this platform, combined with its use in demanding operational environments, made reliable test access a critical requirement. These boards featured: High pin‑count FPGA/BGA devices Fine‑pitch high‑density connectors Large programmable logic components Dense multi‑layer architecture All of which made traditional probing slow, unreliable, or impossible. Engineers needed a faster, more scalable way to debug and test both JTAG and non‑JTAG components. The Turning Point This leading defense manufacturer selected advanced boundary scan as its preferred platform for development, first article build, production, and field service, adopted both internally and by its manufacturing. The engineering team quickly found that smarter structured testing provided a cost‑effective and highly intuitive way to get up and running fast, enabling engineers to move from setup to meaningful test coverage within hours rather than days. Within hours, engineers achieved around 80% test coverage on complex digital circuitry-even on sections that were previously inaccessible. Why It Works Advanced boundary scan testing delivered a unified approach that worked across development, production, and support, removing much of the friction typically associated with complex board bring-up. Key advantages: Reusable device‑centric tests that work across multiple boards and future projects Testing of JTAG and non‑JTAG devices through a high‑level structural test method scripting Rapid programming of flash and other devices from development through production Fast fault isolation in densely populated PCBAs Portable structural test scripts that can be reused across different designs, reducing engineering effort and improving long-term maintainability Results ≈20% reduction in debug and test development time 80%+ digital coverage achieved rapidly Unified design‑for‑test strategy across development, first article build, production, and field service Reusable scripts enabling faster future projects Cost‑effective testing for boards containing large numbers of JTAG and non‑JTAG devices The organisation also recognised that advanced boundary scan offered the speed, versatility, and cost‑effectiveness needed to support a unified design‑for‑test approach that could scale across the entire product lifecycle, from early development through production and ongoing support. Call to Action See how these world leading defense companies are accelerating their design and testing using advanced boundary scan. Read the defense case studies here. Or explore more success stories, click here to see over 100 case studies. Now it is your turn to try advanced boundary scan for free with your own board and see how much faster you can debug, test, and program your designs.

Find Out How a Leading Electronic Design Company Shaves Weeks Off Debug and Testing When deadlines are tight and designs are complex, every hour saved in debugging counts. That’s exactly what one advanced RF technology product developer achieved a faster time to market by adopting smart testing to speed up development, improve coverage, and streamline production. The Challenge The company develops cutting-edge spectral analysis products used for real-time spectrum monitoring across multiple industry sectors. Their advanced system, built around a Xilinx FPGA, surveys a wide frequency range to map and manage radio spectrum usage. But behind the innovation came complexity. Each of their advanced RF system boards featured a high pin-count FPGA, a nightmare for traditional testing. Probing those densely packed BGAs wasn’t just time-consuming; it was next to impossible. The Turning Point That’s when the company turned to smart testing. The switch changed everything. Their engineers could test the Xilinx FPGA (a JTAG enabled device) and extend the testing to non-JTAG devices on their board by using advanced boundary scan, achieving over 80% device coverage across the their boards, all without complex test fixtures. Tests that once took weeks to validate could now be completed in a fraction of the time. Why It Works Boundary-scan testing, defined by IEEE 1149.x, allows engineers to validate connections and functionality without physically probing every device pin. This can then be taken further with an intuitive development environment, making it easier to write, reuse, and share tests across multiple boards and projects. By testing from the device’s perspective, the company could reuse test scripts between modules, saving engineering time and ensuring consistency. And by visualising results and isolating faults development became faster than ever. The Results Weeks of debugging reduced to days 80%+ device coverage achieved via advanced boundary scan Reusable tests across multiple products and projects Simplified production testing through reusable test harnesses The company now uses advanced boundary scan across the entire product lifecycle from design and development to contract manufacturing, ensuring every board leaving production meets the highest standard of reliability. See how this world leading company is accelerating their design and testing using advanced boundary scan. Read the case study here. Or explore more success stories, click here to see over 100 case studies. Is it time to try XJTAG for free with your own board and see how much faster you can debug, test, and program your designs?

Pinpointing Faults Faster: How One Tech Company Found Component Failures in Minutes – Not Hours The 'F' word stands for 'Failed' – because when a circuit fails without explanation, everything stops. Development halts, deadlines slip, and engineers are left searching in the dark for answers. When your test process can’t tell why something failed, it slows everything down. Multiple engineers, hours of troubleshooting, and high rework costs all just to find one faulty component. But what if you could locate that failure in minutes? That’s exactly what one manufacturer achieved when they switched to smarter testing. The Problem Traditional testing only told their team if a product passed or failed – not why. When a failure occurred, engineers faced long, frustrating debugging sessions. In one example, a bad signal issue consumed 40 hours of troubleshooting by multiple employees. The actual fault? A single component that boundary-scan testing could have found instantly at the PCB level. The Turning Point By integrating advanced boundary-scan testing early in their process, the team gained visibility that traditional testing couldn’t deliver. Instead of waiting until system-level testing to find problems, they started catching issues at the board level – before final assembly. That change didn’t just save time, it cut costs dramatically. What once required dozens of engineering hours can now be done by one operator in under an hour. Why It Works Advanced boundary-scan gives access to the hidden pins beneath BGAs and densely populated boards, where traditional test methods can’t reach. It allows engineers to run comprehensive interconnect tests without needing extra test points, probing, or X-ray inspection. The system can test a wide range of devices, from CPUs, FPGAs, RAM, flash and ADCs/DACs to I/O expanders, clock buffers, and bus interfaces like I²C, SPI and PCIe. There is an extensive device library and automated setup made it easy to deploy in their existing environment. The Result Fault isolation reduced from dozens of hours to under one hour Debugging done by a single operator, not multiple engineers Problems caught before final product assembly Substantial savings in engineering time and rework costs As their hardware lead explained how advance boundary scan “saves hours of troubleshooting by pinpointing the faulty component causing the failure.” The Insight Integrating boundary-scan doesn’t just enhance test coverage, it transforms your entire workflow. Instead of chasing failures reactively, engineers can test intelligently and prevent them from reaching production. If you’re still relying solely on functional tests, it might be time to add the precision of advanced boundary-scan to your toolkit. See more real-world examples of how teams cut testing time and costs using advanced boundary scan. View how this advanced manufacturer turned it around here. Or explore more success stories - see over 100 case studies here. Is it time to try advanced boundary-scan for free with your own board and see how fast you can pinpoint faults that functional testing misses.

Prototype to Production: Power Your AI Development with Hardware That Gives You Test Access and BSDL Support Every engineer pushing the limits of hardware feels the same demands: more performance and increased board density causing far less test visibility. You can’t test what you can’t reach, yet you’re still expected to guarantee reliability. If you’re evaluating AI chips or modules for your hardware design, you’re not just buying performance, you’re investing in reliability from day one. The best designs don’t wait until manufacturing to think about testability. They start at the prototype stage, using the right tools and verified data to prevent costly surprises later. When an AI board fails, it’s rarely the chip that’s at fault. It’s almost always a connection that was never properly tested. Why Great Designs Still Fail in Test Not all AI chips or modules are equal when it comes to test access. Some semiconductor vendors fail to provide a verified BSDL (Boundary-Scan Description Language) file, a prerequisite for enabling full boundary-scan (JTAG) testing. This leaves engineers unable to validate solder joints, I/O connectivity, or board integrity after assembly. Once the PCBA (Printed Circuit Board Assembly) is completed, the AI BGA (Ball Grid Array) device hides thousands of I/O pins beneath each device. There’s simply no physical way to check whether every BGA connection is sound, making structural test methods like boundary-scan essential for uncovering hidden defects. You might be thinking, “We already use X-ray for that.” And you should, it’s a great tool. X-ray systems provide visual inspection that can reveal solder and assembly defects, but they cannot perform any electrical tests to verify signal connectivity or logic behavior and that’s where boundary-scan makes all the difference. When Vendors Remove Your Safety Net Some semiconductor vendors still don't provide a verified BSDL file for JTAG boundary-scan testing of BGA devices, assuming that engineering teams will rely solely on functional testing. There are two major issues with this assumption: Undetected faults: Functional tests can pass boards that actually have hidden faults. Cold solder joints, marginal opens, and partial connections can appear “good” at speed because of capacitance effects. These faults often worsen over time, leading to intermittent or early-life failures that are very expensive to diagnose and fix later. Limited fault insight: When functional tests do detect that something’s wrong, they rarely reveal what the fault is or where it’s located without considerable extra development time. What You Lose When You Lose Boundary-Scan Engineers rarely miss deliveries because of workload, they miss them because they can’t see what’s really happening in their circuit. When you’re chasing down a fault on a new board, it’s like working in the dark. Signals vanish under BGAs, nets disappear into inner layers, and every test feels like guesswork. That lack of visibility costs time, rework, and ultimately deadlines. Verified BSDL files with the right tools change that - they let you see what’s going on even where your probes can’t reach, turning blind debugging into confident validation. Selecting a device without a verified BSDL file and full boundary-scan capability means you and your colleagues in design and manufacturing lose a powerful tool for diagnosing board-level faults. Without boundary-scan, fault isolation slows down, test coverage shrinks, and production debug costs escalate very quickly. If your design includes BGA devices - as nearly all AI chips do - the thousands of buried I/O pins make physical access virtually impossible. Engineers don’t need to be blind to what is happening beneath complex devices; boundary-scan brings those hidden faults into the light, exposing what’s really going on deep inside the PCBA. What to Look For Before selecting an AI chip or module, confirm the vendor provides a verified BSDL file, the foundation for implementing full boundary-scan testing. A verified BSDL ensures compliance with the IEEE 1149.x standard and enables boundary-scan testing that provides interconnect verification between JTAG and non-JTAG devices on your PCBA. This unlocks broader fault coverage and diagnostic capability. Boundary-scan operates at low speed, and that’s exactly why it works so well. By testing static interconnections and device pins, it reveals faults that high-speed functional tests often mask. This ensures your engineers can: Detect shorts, opens, and stuck-at faults Validate soldering and interconnects across digital device pins, even under BGAs Integrate boundary-scan with functional testing for complete coverage Avoid costly rework and reduce early-life field failures Boundary-scan doesn’t replace functional testing - it complements it. Together, they provide a full lifecycle safety net from prototype to production. The Question that Separates Smart from Lucky When comparing AI chips, don’t just focus on FLOPS, power, or price. Ask the question that separates reliable suppliers from risky ones: “Does this AI device include a verified BSDL file to enable full boundary-scan testing?” That single question could save your design and manufacturing teams weeks of debugging, cut thousands in support costs, and strengthen your product’s long-term reliability. Design teams have told us that boundary-scan has transformed the way they approach debugging and validation. Instead of spending days chasing elusive faults, engineers now pinpoint issues in minutes, freeing valuable development time and reducing project delays. One team explained that the technology “enabled us to shave weeks off the development schedule by freeing our team from time-consuming debugging tasks.” For many, boundary-scan has become “an absolute necessity for any company designing complex circuits with high pin-count devices.” It allows faults to be detected early, even on dense BGAs and buried nets where traditional probing methods fall short. By providing clear visibility and rapid diagnostics, it “helps us quickly localize any problems, saving time and simplifying rework.” Across different industries and product types, the message is consistent: boundary-scan has become an essential tool for accelerating development, improving quality, and giving engineers the confidence that every board has been thoroughly tested before it leaves the bench or production line. Take the Next Step Before you finalize your next design, see how boundary-scan strengthens testing and reliability. Explore more than 100 real-world examples where boundary-scan testing caught faults early, before production even began. View case studies You can even try boundary-scan for free with your own board a quick way to see the faults your functional tests may have missed. Final Note Boundary-scan isn’t just a testing option, it’s a design decision that shapes every stage of your product’s journey, from the first prototype to full-scale manufacture. By integrating boundary-scan early, not only do you strengthen your product’s long-term reliability and manufacturability, you strengthen your reputation. Remember, the most effective testing strategy is a comprehensive one that combines multiple, complementary test methods to maximize fault coverage and confidence. Whether you’re developing AI hardware, SoCs, FPGAs, or any other complex electronics, ensuring your key components are supported by verified BSDL files will deliver measurable benefits throughout the entire lifecycle - from design validation to field performance and customer satisfaction.

Why AI Chip Vendors Must Rethink Test Imagine this, AI chips power the next generation of high-speed, high-density systems, but your design and manufacturing customers can’t fully test them after assembly. Hours vanish as engineers run functional tests, probing for solder issues, only to miss faults that silently degrade performance over time. This challenge is intensified by the use of BGA (Ball Grid Array) packages for AI chips. With solder joints and I/O pins hidden beneath the device, engineers can’t access them for visual inspection or probing. Once assembled, there’s simply no physical way to check whether every connection is sound, making structural test methods like boundary scan essential for uncovering hidden defects. The Problem Across the industry, many engineers supporting AI chip customers believe boundary scan isn’t being used for PCBA testing. They assume functional tests are enough to confirm solder quality and I/O connectivity, especially for high-speed interfaces and memory devices. However, there are two major issues with this assumption: Undetected faults: Functional tests can pass boards that actually have hidden faults. Cold solder joints, marginal opens, and partial connections can appear “good” at speed because of capacitance effects. These faults often worsen over time, leading to intermittent or early-life failures that are very expensive to diagnose and fix later. Limited fault insight: When functional tests do detect that something’s wrong, they rarely reveal what the fault is or where it’s located without considerable extra development time. This makes fault isolation slow, reactive, and very costly! The Misconception Some engineers think boundary scan can’t detect cold solder or high-speed I/O problems,  and as a result, BSDL (Boundary-Scan Description Language) support is being dropped from some new AI chip designs. This belief is not only outdated but highly risky. That’s a dangerous oversight, especially as AI devices use dense BGA packaging. Because these devices have no exposed leads or probe points, boundary scan provides the quickest and most effective diagnostic tool for verifying connectivity beneath the package. Removing boundary scan support leaves customers without an easy, reliable way to detect and isolate faults that would otherwise remain hidden. The Smarter Approach Boundary scan operates at low speed, and that’s exactly why it works so well. By testing static interconnections and device pins, it reveals faults that high-speed functional tests often mask. It can detect: Opens, shorts, and poor solder joints beneath BGAs. Faults in high-speed signal paths that appear stable during functional tests. Issues in signal distribution and memory interfaces that degrade over time. Boundary scan isn’t a replacement for functional testing, it’s complementary. Together, they form part of a complete test strategy that improves yield, reliability, and customer satisfaction. The Call to Action for AI Chip Vendors For AI chip leaders like NVIDIA, AMD, ARM, and Intel, supporting boundary scan shouldn't be just a checkbox, it’s a commitment to reliability and customer success. Providing a full BSDL file enables customers to integrate AI devices into their board-level tests, improving product quality across the ecosystem. Fully implementing boundary scan in AI devices ensures that engineers can: Validate PCBA connectivity on the board or even between boards. Help identify weak or marginal connections that could lead to intermittent faults. Detect manufacturing defects earlier and at lower cost. The Turning Point In real-world prototyping and production, companies adopting full boundary-scan testing have cut debugging time from days to minutes, catching subtle connection faults invisible to functional testing. That’s the difference between reactive troubleshooting and proactive reliability. What About You? If you’re developing, producing and supporting AI chips, now is the time to rethink the test strategies you support. Boundary scan isn’t just a nice-to-have; it’s a necessity for you and your customers. Explore over 100 real-world examples of how companies have transformed their fault isolation and testing using boundary scan technology: View case studies Or experience it first-hand: Try XJTAG with your own board and see how fast, structured testing exposes the faults functional testing misses.

Turn Your Debugging Hours into Minutes of Insight Picture this, you’re testing products after assembly, but fault-finding keeps tripping you up. Hours vanish as you and your colleagues chase hidden issues, only to find out too late which components are causing the problem. The Problem Functional tests that just say pass or fail won’t tell you why something failed. Faults hide under BGAs, debugging takes days, and engineers spend valuable time tracing signals instead of solving problems. In some cases it can take entire teams dozens of hours to isolate a single bad component, wasting valuable time and resources. Tried and Failed Typical fixes involve re-running functional tests, manual probing, or swapping components at random, yet the root cause often remains hidden. When faults occur on densely populated PCBAs or under BGAs where physical access is impossible, manual inspection turns into guesswork. Confidence fades, stress builds, and projects grind to a halt. The Turning Point The breakthrough comes with smarter testing, a structured way to diagnose faults down to the component level. Here’s what changes: Your and your team can pinpoint exactly which component or connection has failed in minutes, not hours. Shorts, opens, and missing pull-ups or pull-downs are identified automatically, even across logic paths. Hidden faults under BGAs or in dense layouts become visible without complex fixtures. Comprehensive coverage is achieved earlier, reducing costly rework later. The Transformation The impact is immediate: Debugging that once took a team several days of work can now be done in less than an hour. Faulty boards are detected early, preventing delays and unnecessary rebuilds. Component-level visibility transforms testing into a proactive, cost-saving process. Greater consistency and quality can then be delivered. What about you? If fault-finding and rework are still slowing your team down, it’s time to rethink your approach. It doesn’t just save time, it gives you clear visibility and confidence in every board. Want to see the full story of how this transformation happens? Here’s how a developer and manufacturer of security and intelligence products reduced debugging from days to minutes. Read the case study Or why not see it for yourself? Try XJTAG with your own board and explore how fast, structured testing can help you pinpoint faults and cut debugging and testing time.

Why Your Prototype Board Won’t Boot, and How to Fix It Faster. It’s the moment every engineer dreads: your new prototype arrives, you do some basic checks, power it on, and… nothing. No LEDs, no serial output, just silence. What went wrong? Is it a solder bridge, a missing pull-up, or a short hiding under a BGA? The clock’s ticking, and every hour lost brings you closer to a delayed project. The Challenge During bring-up, every second counts. You need to verify connections, check power rails, and confirm that devices are communicating properly,  all before you can even begin functional testing. But traditional debugging methods, oscilloscopes, logic probes, and manual checks, only get you so far, especially on dense, multi-layer boards. The Common Pitfalls Many teams rely on trial-and-error to find faults, reflowing, resoldering, and swapping components in hope of a breakthrough. Others jump straight into firmware debugging before confirming hardware integrity. The result? Days or even weeks wasted chasing invisible faults that could have revealed in minutes. The Smarter Approach When traditional debugging hits a wall, there’s a better way to bring up and test your prototype boards. Instead of spending hours with probes and trial‑and‑error fixes, engineers can now use advanced testing tools to access hidden pins, automate testing, and pinpoint faults faster. Achieve Superior Test Coverage This technology allows engineers to achieve high test coverage by using device pins as virtual test points, no need for complex fixtures or physical access to hard‑to‑reach BGAs. A built‑in library of tens of thousands of components covers connection and functionality tests, letting teams efficiently test a wide range of devices and quickly resolve manufacturing faults. Test Complex, Integrated Boards An integrated development environment (IDE) guides engineers through creating and executing PCB tests to find assembly faults and validate the function of components, from LEDs to DDR5 memory. The intuitive interface makes component categorisation quick, with ready‑made device models or easy scripting options using the test language. Tests can be run on any board, no programming or boot code needed, to locate faults before power‑up. Find the Root of Problems, Quickly Advanced diagnostics provide full visibility of the board’s state. Engineers can instantly see the fault type, nets and pins involved, and their exact location on schematics, pinpointing shorts in seconds. Without any custom tests, interconnection testing finds opens, shorts, missing pull‑ups/downs, and faults hidden through logic or resistors. When an issue is found, additional tests run automatically to provide more context. Take Full Control of Your Testing All this capability is accessible without coding. The tools are designed for ease of use, featuring an extensive library of ready‑to‑use device models that simplify setup and reduce onboarding time. Tests can also be customised to interact with boards in real time, bringing up power rails in sequence or adapting tests dynamically based on hardware configuration. The Turning Point Teams using XJTAG’s bring-up approach have cut prototype debug time from days to hours. Instead of endless probing, they validate entire interconnects instantly and move straight to firmware testing with confidence. The result? Faster validation, fewer surprises, and more predictable schedules. The Takeaway Prototype bring-up doesn’t have to be stressful. With the right method, you can find faults faster, protect your design from costly damage, and get to that satisfying first boot in record time. Explore It Now Check out the test-coverage-report. It’s completely free, just upload your design data to instantly visualise test coverage, identify untested devices, and strengthen your validation plan. Tip: Before you start, use the Device Checker to see if your device is supported for testing. The Device Checker currently checks for: JTAG devices, with a BSDL file “Test” devices, covered by a file in the XJEase Library “Logic” devices, covered by a definition in the Logic Library For Test and Logic devices, XJTAG can further test the board for connectivity using the expected behaviour of the device. Check out our page on Testing Non‑JTAG Devices