UCIe Based Chiplet Ecosystem Interoperable Testbench for Multi Vendor IP Integration

By Luis E. Rodriguez, Senior Technical Product Manager, Siemens and Prashant Dixit, Architect, Siemens

The chiplet ecosystem and standards are still in their infancy. Consequently, official interoperability and compliance programs from groups like the UCIe Working Group are not yet available. It usually takes a few years after a spec is published for such programs to begin, since silicon isn't available immediately. This creates risk for early adopters but also opens opportunities for early design collaboration.

We describe a simulation-based interoperability program that integrates UCIe IP from two companies into a simulation environment, focusing on LogPhy and D2D interoperability in two stages. Verification IP for UCIe is used to create test cases and drive traffic through RDI and FDI interfaces. We discuss the challenges during the interoperability effort, test cases created, and results. We also explore how other companies can join similar efforts to accelerate UCIe adoption and rollout.