Multi-chip module (MCM) with interface adapter circuitry

Semiconductor devices, packaging architectures and associated methods are disclosed. In one embodiment, a multi-chip module (MCM) is disclosed. The MCM includes a package substrate and a first integrated circuit (IC) chip disposed on the package substrate. The first IC chip includes first core circuitry, and first interface circuitry for communicating with the first core circuitry. A second IC chip is disposed on the package substrate and includes second core circuitry and second interface circuitry for communicating with the second core circuitry. The second interface circuitry exhibits a non-matching interface with respect to the first interface circuitry. Interface adapter circuitry couples to the first interface circuitry and the second interface circuitry to establish a common physical interface (PHY) for communicating between the first core circuitry and the second core circuitry.