600 Series Chipset Family On-Package Platform Controller Hub

Datasheet, Volume 1 of 2

ID 691222
Date 01/05/2022

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

Thermal Reporting to an EC

To support a platform EC that is managing the system thermals, the PCH provides the ability for the EC to read the PCH temperature over SMBus and/or over eSPI. If enabled, PMC will drive the temperature directly to the SMBus and eSPI units . The EC will issue an SMBus read or eSPI OOB Channel request and receives a single byte of data, indicating a temperature between 0°C and 127°C, where 255 (0xFF) indicates that the sensor isn’t enabled yet. The EC must be connected to either SMLink1 or eSPI for thermal reporting support.

Note:The catastrophic trip value is set close to 110 °C and is not programmed or accessible by BIOS.