SoC-to-IOE Force Thermal Throttling Control (S2I_FTT_CTRL) – Offset 15a4 - 001 - ID:834576 | Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2

Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2

ID	Date	Version	Classification
834576	10/10/2024	001	Public

SoC-to-IOE Force Thermal Throttling Control (S2I_FTT_CTRL) – Offset 15a4

SoC-to-IOE Force Thermal Throttling Control

Bit Range	Default	Access	Field Name and Description
31:11	0h	RO	Reserved
10	0h	RW	SoC-to-IOE Force Thermal Throttle Software Override Value (S2I_FTT_OVERRIDE_VAL) Software override value for the SoC-to-IOE Force Thermal Throttling mechanism. Refer to the definition of S2I_FTT_OVERRIDE_EN for enabling details.
9	0h	RW	SoC-to-IOE Force Thermal Throttle Software Override Enable (S2I_FTT_OVERRIDE_EN) Software override enable for the SoC-to-IOE Force Thermal Throttling mechanism. When the S2I_FTT_EN bit is 1 and this bit is 1, SoC PMC will set the force throttle wire to the value in the S2I_FTT_OVERRIDE_VAL register. When this bit is 0 or the S2I_FTT_EN bit is 0, SoC PMC will ignore the value in the S2I_FTT_OVERRIDE_VAL register when determining the state of the SoC-to-IOE forced thermal throttling wire.
8	0h	RW	SoC-to-IOE Force Thermal Throttling Enable (S2I_FTT_EN) Enables the SoC-to-IOE Force Thermal Throttling mechanism. When this bit is 1, SoC PMC will assert the force throttle wire to the IOE when the measured maximum SoC temperature is above the threshold programmed in the S2I_FTT_THRESHOLD register. When this bit is 0, SoC PMC will not assert the force throttle wire to the IOE regardless of other conditions.
7:0	0h	RW	SoC-to-IOE Force Thermal Throttling Threshold (S2I_FTT_THRESHOLD) SoC aggregate temperature threshold for forcing thermal throttling on the IOE die. When the SoC-to-IOE Force Thermal Throttling feature is enabled and the aggregated SoC South temperature is above this threshold value, the IOE will be forced into a thermal throttling state. When the temperature is below this threshold, the IOE will not be forced into a thermal throttling state. The format of this register is in S8.7.0 2's complement format. This register is not lockable, so that SW can change the values during runtime.