Presentation
Toward an Open Chiplet Ecosystem: Arm® Foundation Chiplet System Architecture
DescriptionThe rapid growth of AI workloads is fundamentally reshaping system-on-chip (SoC) design. Monolithic scaling is increasingly constrained by reticle limits, rising costs, power density, and yield challenges, while AI systems demand heterogeneous compute, high-bandwidth memory, and system-level co-design across silicon, packaging, and software. Chiplet-based architectures offer a compelling path forward, enabling modularity, reuse, and faster innovation. However, the lack of common system-level standards risks fragmenting the ecosystem and limiting multi-vendor interoperability.
This presentation introduces the Foundation Chiplet System Architecture (FCSA), an open, ISA-neutral, and architecture-agnostic framework designed to enable interoperable chiplet-based systems at scale. Building on the lessons and adoption of the Arm Chiplet System Architecture (CSA), FCSA defines a common foundation for chiplet systems independent of CPU instruction set, enabling reuse across diverse architectures and markets. Developed under the Open Compute Project (OCP), FCSA establishes a shared vocabulary of chiplet types—including compute, accelerator, I/O, memory, and system expansion—and specifies their expected behaviors, interfaces, and trust boundaries.
FCSA adopts a layered model spanning system partitioning, functional interfaces, protocol mappings, and physical integration, leveraging industry standards such as UCIe, AMBA CHI-C2C, PCIe, and CXL to ensure multi-vendor interoperability. By decoupling architecture-specific requirements from common system foundations, FCSA enables both ISA-specific optimization and broad ecosystem compatibility.
The Foundation Chiplet System Architecture represents a critical step toward an open chiplet marketplace, reducing integration friction, accelerating custom silicon development, and enabling scalable, heterogeneous systems for AI infrastructure, cloud, automotive, and edge computing.
This presentation introduces the Foundation Chiplet System Architecture (FCSA), an open, ISA-neutral, and architecture-agnostic framework designed to enable interoperable chiplet-based systems at scale. Building on the lessons and adoption of the Arm Chiplet System Architecture (CSA), FCSA defines a common foundation for chiplet systems independent of CPU instruction set, enabling reuse across diverse architectures and markets. Developed under the Open Compute Project (OCP), FCSA establishes a shared vocabulary of chiplet types—including compute, accelerator, I/O, memory, and system expansion—and specifies their expected behaviors, interfaces, and trust boundaries.
FCSA adopts a layered model spanning system partitioning, functional interfaces, protocol mappings, and physical integration, leveraging industry standards such as UCIe, AMBA CHI-C2C, PCIe, and CXL to ensure multi-vendor interoperability. By decoupling architecture-specific requirements from common system foundations, FCSA enables both ISA-specific optimization and broad ecosystem compatibility.
The Foundation Chiplet System Architecture represents a critical step toward an open chiplet marketplace, reducing integration friction, accelerating custom silicon development, and enabling scalable, heterogeneous systems for AI infrastructure, cloud, automotive, and edge computing.
Event Type
Engineering Poster
TimeTuesday, July 285:00pm - 6:00pm PDT
LocationDAC Pavilion, Exhibit Floor