AMBA C2C Introduced as Converged Foundation for Chiplet Connectivity - News and Statistics - IndexBox

Arm pushing AMBA interconnect from on-die to off-die is, at its core, a revenue-model migration: shifting the toll booth from the hardware layer to the IP licensing layer. Previously, chiplet interconnect was defined independently by packaging houses and chip designers. This move inserts Arm at the protocol-stack base of advanced packaging—meaning CoWoS, Foveros, and similar solutions now carry an additional Arm tax at the interface layer. The technical cascade is immediate: Synopsys and Cadence must deliver C2C protocol validators within 12 months or the chiplet design flow fractures. Arm is replicating the PCIe playbook—establish de facto standard first, monetize later. On compliance, bundling interconnect standards with processor IP systematically compresses downstream bargaining power. EU and China antitrust authorities should monitor this trajectory. In the competitive arena, the UCIe consortium (Intel, AMD, Samsung, SK Hynix) will likely ship a 3.0 spec by Q3 2025 as a hedge, while Chinese fabless players accelerate in-house interconnect IP to sever Arm dependency. 12-24 month outlook: interconnect standards enter a three-way war. Arm's ecosystem inertia secures 60%+ share in server and mobile. The real variable isn't technical superiority—it's who completes joint validation with advanced packaging lines first.