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Glossary / Expanded definition

UCIe

Universal Chiplet Interconnect Express

UCIe is an open specification for communication between chiplets within a package. Its scope includes physical interconnect and protocol aspects of die-to-die communication. (ASE: UCIe specification)

By · Educational reference

01 / UNDERSTAND THE TERM

UCIe: what it means.

Universal Chiplet Interconnect Express is an open specification for interconnects between chiplets. The consortium announcement describes physical-layer, protocol and software-stack aspects of package-level communication. (ASE: UCIe specification)

Support for a standard is one item in an integration review. Check the version and implementation, packaging needs and system assumptions rather than inferring compatibility from a logo or acronym. (ASE: UCIe specification)

02 / PRACTICAL CONTEXT

Put the definition to work.

Treat UCIe support as one part of compatibility, not permission to combine arbitrary chiplets. Review the relevant version, implementation, and system requirements. (ASE: UCIe specification)

03 / READING DOCUMENTATION

Questions to ask next.

Use these questions as a reading checklist, not as a device-selection recommendation. Exact manufacturer documentation takes priority over a general definition.

  • Specification version and implemented features
  • Physical and protocol compatibility
  • Package and complete-system requirements

For the broader explanation, explore chiplets and package integration. This page defines the term; the companion guide connects it to the rest of the system.

04 / QUICK ANSWERS

Common UCIe questions.

Is UCIe a chip that I insert into a board?

No. It is an interconnect specification. Particular devices and package designs implement relevant parts of that specification. (ASE: UCIe specification)

Keep learning

Related definitions.

Compare the processing, memory and packaging roles without confusing them.

For information purposes, not component specifications. Read our editorial standards.