The Arm CoreLink CCI-550 Cache Coherent Interconnect

The Arm CoreLink CCI-550 Cache Coherent Interconnect provides full cache coherency between big.LITTLE processor clusters, Mali GPU, and other agents such as network interfaces or accelerators. It can support up to six AXI Coherency Extensions (ACE) and six memory interfaces for the efficient movement of data. 

Features and Benefits

Fully Coherent GPU Support

One to six ACE ports means CoreLink CCI-550 supports a fully coherent GPU to simplify software development. Hardware coherency enables shared virtual memory and removes the need for time-consuming software-managed cache maintenance.

Complete System Solution

The CoreLink CCI-550 has been designed, tested, and optimized with the latest Arm technology, including the Cortex and Mali processor series, and CoreLink system IP.


Highly scalable configuration serves a wide range of applications from premium tablet down to smaller, cost-sensitive designs.

Increased Performance

Microarchitecture for the CoreLink CCI-550 snoop filter provides a 2x snoop hit for bandwidth that extends efficiency across the system.

Use Cases

Where Innovation and Ideas Come to Life


Arm technology is used in various applications throughout the car including Advanced driver-Assistance Systems (ADAS) and autonomous driving.

Smart Homes

Connected intelligence across the home, including smart meters, connected lighting, connected appliances, and much more.

Talk with an Expert

A trusted interconnect solution must work for multiple applications and result in an improved user experience. Talk to an Arm expert about the highest efficiency coherent interconnect to do the job.

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Related Products and Services

Explore More Options and Features

Arm Cortex Processors

Cortex Processors

Arm processors include the ultra-low power Cortex-M series, real-time response Cortex-R series, and the high-performance Cortex-A series.

Mali Graphics & Multimedia Processors

Graphics and Multimedia

Arm Mali media IP offer high-performing, energy-efficient media processing across a large and growing number of mobile and consumer devices, including smartphones, tablets, TVs and wearables.

CoreSight Debug and Trace

CoreSight Debug and Trace

Arm CoreSight technology is a set of tools that can be used to debug and trace software that runs on Arm-based SoCs.

Memory Controllers

Memory Controllers 

The Arm family of Dynamic Memory Controllers manage the differing demands of multiple processing elements while delivering maximum DRAM bandwidth.

System Memory Management Units

System Memory Management Units

A system memory management unit (SMMU) is responsible for all aspects of memory management, including caching and memory virtualization.

Interrupt Controllers

Interrupt Controllers

Arm generic interrupt controllers (GIC) perform critical tasks of interrupt management, prioritization and routing.

CCI-550 Resources

Everything you need to know to make the right decision for your project. Includes technical documentation, industry insights, and where to go for expert advice.


Technical Documentation



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