Arm has released the first public specification of its Arm Chiplet System Architecture (CSA).

First introduced by the company last year, more than 60 organizations have now engaged with Arm’s CSA, helping to address the physical layer compatibility of chiplets, a challenge that occurs when designs from different teams are paired together.

Customized chiplets can be used to make System-on-Chips (SoCs) more flexible, accessible, and cost-effective while reducing the risk of fragmentation. However, without industry-wide standards and frameworks, variations in chipsets could result in compatibility issues.

Arm said its chiplet ecosystem provides a set of system partitioning and chiplet connectivity standards that would “revolutionize system design," enabling the creation of multiple custom systems-on-chip that can deliver better performance and reduced power consumption at lower overall design costs compared to monolithic chips.

Arm’s ecosystem partners include ADTechnology, Alphawave Semi, AMI, Cadence, Jaguar Micro, Kalray, Rebellions, Siemens, and Synopsys. Arm said several vendors have already engaged with its CSA and started building solutions as part of the company’s Arm Total Design ecosystem.

Launched in late 2023, Arm Total Design supports the delivery of custom silicon built using its Neoverse compute subsystems (CSS) solutions.

In a blog post outlining the announcement, Eddie Ramirez, VP of infrastructure business, Arm, wrote: “We believe the Arm-based chiplet ecosystem is uniquely positioned to meet the challenge of growing AI demands in all markets, leveraging the flexibility of the Arm compute platform, the seamless communication enabled by standards like AMBA CHI chip-to-chip [architecture], and the integration enabled by CSA.

“As the ecosystem around CSA continues to grow, so does the collaboration on standards and the impact we can make as an industry to significantly reduce fragmentation and enable faster development and deployment of custom silicon solutions.”