The UCIe Consortium's Universal Chiplet Interconnect Express (UCIe) is designed to connect chiplets together providing multiple high-speed serial interfaces such as PCI Express (Fig. 1). I talked with Brian Rea about the UCIe standard and what protocols it supports (watch the video above).

One of the features of UCIe is the ability to support more than one protocol at the same time. This muxing feature is called Multi-Protocol Enable (MPE). MPE (Fig. 2) allows more than one protocol to be used across a UCIe link. This is similar to other connectivity standards like USB, which can support multiple connections over a single connection like muxing data and video streams. The approach reduces the number of connections between nodes while transparently providing multiple logical connections.