600 Series Chipset Family On-Package Platform Controller Hub

Datasheet, Volume 1 of 2

ID 691222
Date 01/05/2022

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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.