OVERVIEW

Highly Scalable Mesh for Large Core Count Automotive Designs Including Chiplets

The Arm Neoverse CMN S3AE coherent mesh network is designed for scalable performance in automotive applications, central compute, and machine learning (ML) workloads. The highly scalable mesh is optimized for Armv9.2, Armv9, Armv8-A processors, multichip configurations, and CXL attached devices. It forms the foundation for both SoCs and chiplets. It can be customized across a wide range of performance points.

CMN S3AE delivers the many-core performance scaling and chip-to-chip connectivity that enables the first Arm Automotive Compute Subsystem – Zena CSS.

Features and Benefits

High-Performance, Scalable Coherent Mesh

The scalable mesh network can be customized to meet system performance and area requirements. The native AMBA 5 CHI network provides high-frequency, non-blocking data transfers between compute, accelerator, and IO to shared memory resources.
Safety Capability

CMN S3AE is designed for enable ASIL B use cases, with a range of safety features including ECC and parity mechanisms and other techniques to achieve diagnostic coverage goals.
AMBA CHI Chip to Chip

The foundation for chiplet-based architectures, CMN S3AE delivers high-speed chip-to-chip connectivity that matches the performance of monolithic SoCs, supporting scalability and modular design.
TECHNOLOGIES

A Foundation of Silicon Success

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Explore Products and Technologies

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Neoverse V3AE

The first Armv9.2 Neoverse CPU with safety enhancements for automotive markets and the highest single-thread performance for AI/ML workloads and automotive markets.

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Cortex-A720AE

The first Armv9-A high-performance Cortex-A CPU based on Arm DynamIQ technology and designed for safety-critical applications. Designed for the next generation of SDVs.

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Arm Cortex-A520AE

Cortex-A520AE

High-efficiency Armv9.2 Cortex-A CPU for safety-critical applications, bringing power efficiency in the smallest silicon footprint. Designed for the next generation of SDVs.

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USE CASES

Where Innovation and Ideas Come to Life

Software-Defined Vehicles (SDV)

AI-defined vehicles demand scalable, efficient, and safety-ready compute platforms. Arm addresses this challenge through industry-standard frameworks like SOAFEE and EWAOL, enabling innovators to build on a consistent foundation and accelerate development across the ecosystem.

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Artificial Intelligence (AI)

AI and ML workloads are rapidly expanding in the SDV era — powering perception, prediction, personalization, and more. CMN S3AE provides the high-throughput, scalable mesh architecture needed to support these growing demands across safety-critical and user-facing systems in the AI-defined vehicle.

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RESOURCES

CMN S3AE Resources


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