The Fast Access Controller (FAC) is an innovative solution designed to enhance the efficiency of processor and ASIC/SoC systems by improving the execution of in-system tests and programming. This pre-engineered IP offers a comprehensive framework for high-speed on-board Flash programming, tailored to meet demanding production environments. FAC is highly effective in reducing programming times and enhancing the support for external flash memories connected to FPGAs.\n\nFAC allows for a streamlined, scalable approach to managing the complexity of modern circuits during manufacturing, minimizing integration complexity and enhancing production throughput. By enabling the rapid programming of Flash memory via the 1149.1 interface, FAC helps designers quickly adapt to varied customer needs, offering a cost-effective alternative to traditional methods.\n\nIntegrated within the Eclipse Test Environment, FAC supports the design-for-test infrastructure, minimizing time and cost associated with debugging and system validation. This ensures that high-quality, programmable electronics are both achievable and identifiable, enhancing the overall efficacy of manufacturing strategies.