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

Thermal Reporting to EC

To support a platform EC that is managing the system thermals, the processor provides the ability for the EC to read the processor temperature over SMBus and/or over eSPI. If enabled, Power Management 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.