Intel® Core™ Ultra Processor

Datasheet, Volume 1 of 2
Supporting Intel® Core™ Ultra Processor for U/H/U-Type4-series Platforms, formerly known as Meteor Lake

ID Date Version Classification
792044 03/05/2024 Public

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Document Table of Contents

SMBus Power Gating

SMBus shares the Power Gating Domain with Primary-to-Sideband Bridge (P2SB). A single FET controls the single Power Gating Domain; but SMBus and P2SB each has its own dedicated Power Gating Control Block. The FET is only turned off when all these interfaces are ready to PG entry or already in the PG state.