A chiplet designed for UCIe-2.5D can physically mate with any other UCIe-2.5D chiplet from any vendor, provided same bump map version.

UCIe 2.0 (released August 2024, backward compatible with 1.0/1.1). This guide covers both.

This is the electrical interface to the package media. It handles signal transmission, link training, lane repair, and sideband communication for parameter negotiation.

The UCIe specification includes covering:

The UCIe specification is after registration at: https://www.uciexpress.org/specification

UCIe Consortium (founded by AMD, Arm, Google, Intel, Meta, Microsoft, Qualcomm, Samsung, TSMC).

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