Die-to-die interconnect: what it means.
A multi-die system needs electrical pathways and agreed communication behavior between its dies. Physical interconnect and protocol requirements both contribute to that communication. UCIe is one specification aimed at this package-level role. (ASE: UCIe specification)
A mechanical connection alone does not establish that two dies can communicate. A specification describes more than where contacts sit, and an actual implementation must be checked against its interface and system requirements. (ASE: UCIe specification)
Put the definition to work.
Do not confuse an internal die-to-die link with a board-level connector. Check the interface specification and packaging requirements for the particular design. (ASE: UCIe specification)
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.
- Physical interface and protocol
- Supported specification and implementation
- Packaging and integration 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.
Common Die-to-die interconnect questions.
Does die-to-die always mean UCIe?
No. Die-to-die describes the communication role. UCIe is a named specification for that role, not a replacement name for every internal link. (ASE: UCIe specification)