600 Series Chipset Family Platform Controller Hub

Datasheet, Volume 1 of 2

ID 648364
Date 05/10/2022
Document Table of Contents

Reset

Each host controller has an independent reset associated with it. Control of these resets is accessed through the Reset Register.

Each host controller and DMA will be in reset state once powered ON and require SW (BIOS or driver) to write into specific reset register to bring the controller from reset state into operational mode.

Note:To avoid a potential I2C peripheral deadlock condition where the reset goes active in the middle of a transaction, the I2C controller must be idle before a reset can be initiated.