Arm Opens Access to Chiplet Architectures and AI Platforms (www.allaboutcircuits.com)

Arm announced a two-pronged push to make Arm-based silicon more accessible: it contributed the Foundation Chiplet System Architecture (FCSA) to the Open Compute Project and joined OCP’s board, and it added its Armv9 Edge AI platform to Flexible Access for early prototyping. FCSA is a vendor-neutral system-level spec that defines how chiplets interoperate and complements physical interconnect standards like UCIe and BoW. By donating FCSA and expanding its Total Design partner ecosystem, Arm aims to enable mix-and-match, disaggregated compute tiles in data centers and — crucially — extend the same reuse and safety-certified chiplet concepts into automotive SoCs. On the developer side, Flexible Access now covers Armv9 Edge AI building blocks such as Cortex‑A320 cores and Ethos‑U NPUs, letting startups and teams run RTL simulation, power/performance estimation, and software development with production-grade toolchains before committing to full licenses. That lowers prototyping cost and risk for edge AI endpoints (sensors, smart cameras, health devices) and promotes integration with Arm’s software stack (Core ML, ML Commons, ExecuTorch). Collectively, these moves signal Arm’s bet on openness and interoperability — not open-source IP — as the path to remain the default for both enterprise and constrained innovators as chiplets and multi-die packaging go mainstream.