Intel® Core™ Ultra 200H and 200U Series Processors CFG and MEM Registers

ID Date Version Classification
844345 01/29/2025 001 Public
Document Table of Contents
D0:F0 Host Bridge and DRAM Controller - MCHBAR Memory Controller (part 1) In-Band ECC Activate (IBECC_ACTIVATE) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_0) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_1) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_2) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_3) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_4) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_5) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_6) IBECC Protected Address Range (IBECC_PROTECT_ADDR_RANGE_7) ECC Protected VC0 Read Data Request Count (ECC_VC0_RD_REQCOUNT) ECC Protected VC1 Read Data Request Count (ECC_VC1_RD_REQCOUNT) ECC Protected VC0 Write Data Request Count (ECC_VC0_WR_REQCOUNT) ECC Protected VC1 Write Data Request Count (ECC_VC1_WR_REQCOUNT) Unprotected VC0 Read Request Count (NOECC_VC0_RD_REQCOUNT) Unprotected VC1 Read Request Count (NOECC_VC1_RD_REQCOUNT) Unprotected VC0 Write Request Count (NOECC_VC0_WR_REQCOUNT) Unprotected VC1 Write Request Count (NOECC_VC1_WR_REQCOUNT) ECC Error Log (ECC_ERROR_LOG) Parity Error Log (PARITY_ERR_LOG) ECC Injection Address Mask (ECC_INJ_ADDR_MASK) ECC Error Injection Address Base (ECC_INJ_ADDR_BASE) Parity Error Injection (PARITY_ERR_INJ) IBECC ECC Error Injection Control (ECC_INJ_CONTROL) Request Counter (ECC_VC0_SYND_RD_REQCOUNT) Request Counter (ECC_VC1_SYND_RD_REQCOUNT) Request Counter (ECC_VC0_SYND_WR_REQCOUNT) Request Counter (ECC_VC1_SYND_WR_REQCOUNT) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_0) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_1) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_2) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_3) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_4) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_5) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_6) ECC Data Storage Address (ECC_STORAGE_ADDR_RANGE_7) ECC Error Counter (ECC_ERR_COUNT) IBECC Memory Initialization Control (IBECC_MEMORY_INIT_CONTROL)
D0:F0 Host Bridge and DRAM Controller - VTDPVC0BAR Version Register (VER_REG_0_0_0_VTDBAR) Capability Register (CAP_REG_0_0_0_VTDBAR) Extended Capability Register (ECAP_REG_0_0_0_VTDBAR) Global Command Register (GCMD_REG_0_0_0_VTDBAR) General Status Register (GSTS_REG_0_0_0_VTDBAR) Root Table Address Register (RTADDR_REG_0_0_0_VTDBAR) Context Command Register (CCMD_REG_0_0_0_VTDBAR) Fault Status Register (FSTS_REG_0_0_0_VTDBAR) Fault Event Control Register (FECTL_REG_0_0_0_VTDBAR) Fault Event Data Register (FEDATA_REG_0_0_0_VTDBAR) Fault Event Address Register (FEADDR_REG_0_0_0_VTDBAR) Fault Event Upper Address Register (FEUADDR_REG_0_0_0_VTDBAR) Advanced Fault Log Register (AFLOG_REG_0_0_0_VTDBAR) Protected Memory Enable Register (PMEN_REG_0_0_0_VTDBAR) Protected Low Memory Base Register (PLMBASE_REG_0_0_0_VTDBAR) Protected Low-Memory Limit Register (PLMLIMIT_REG_0_0_0_VTDBAR) Protected High-Memory Base Register (PHMBASE_REG_0_0_0_VTDBAR) Protected High-Memory Limit Register (PHMLIMIT_REG_0_0_0_VTDBAR) Invalidation Queue Head Register (IQH_REG_0_0_0_VTDBAR) Invalidation Queue Tail Register (IQT_REG_0_0_0_VTDBAR) Invalidation Queue Address Register (IQA_REG_0_0_0_VTDBAR) Invalidation Completion Status Register (ICS_REG_0_0_0_VTDBAR) Invalidation Event Control Register (IECTL_REG_0_0_0_VTDBAR) Invalidation Event Data Register (IEDATA_REG_0_0_0_VTDBAR) Invalidation Event Address Register (IEADDR_REG_0_0_0_VTDBAR) Invalidation Event Upper Address Register (IEUADDR_REG_0_0_0_VTDBAR) IQ Error Info register (IQERCD_REG_0_0_0_VTDBAR) Interrupt Remapping Table Address Register (IRTA_REG_0_0_0_VTDBAR) Page Request Queue Head Register (PQH_REG_0_0_0_VTDBAR) Page Request Queue Tail Register (PQT_REG_0_0_0_VTDBAR) Page Request Queue Address Register (PQA_REG_0_0_0_VTDBAR) Page Request Status Register (PRS_REG_0_0_0_VTDBAR) Page Request Event Control Register (PECTL_REG_0_0_0_VTDBAR) Page Request Event Data Register (PEDATA_REG_0_0_0_VTDBAR) Page Request Event Address Register (PEADDR_REG_0_0_0_VTDBAR) Page Request Event Upper Address Register (PEUADDR_REG_0_0_0_VTDBAR) MTRR Capability Register (MTRRCAP_0_0_0_VTDBAR) MTRR Default Type Register (MTRRDEFAULT_0_0_0_VTDBAR) Fixed-Range MTRR Format 64K-00000 (MTRR_FIX64K_00000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 16K-80000 (MTRR_FIX16K_80000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 16K-A0000 (MTRR_FIX16K_A0000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-C0000 (MTRR_FIX4K_C0000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-C8000 (MTRR_FIX4K_C8000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-D0000 (MTRR_FIX4K_D0000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-D8000 (MTRR_FIX4K_D8000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-E0000 (MTRR_FIX4K_E0000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-E8000 (MTRR_FIX4K_E8000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-F0000 (MTRR_FIX4K_F0000_REG_0_0_0_VTDBAR) Fixed-Range MTRR Format 4K-F8000 (MTRR_FIX4K_F8000_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 0 (MTRR_PHYSBASE0_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 0 (MTRR_PHYSMASK0_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 1 (MTRR_PHYSBASE1_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 1 (MTRR_PHYSMASK1_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 2 (MTRR_PHYSBASE2_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 2 (MTRR_PHYSMASK2_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 3 (MTRR_PHYSBASE3_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 3 (MTRR_PHYSMASK3_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 4 (MTRR_PHYSBASE4_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 4 (MTRR_PHYSMASK4_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 5 (MTRR_PHYSBASE5_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 5 (MTRR_PHYSMASK5_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 6 (MTRR_PHYSBASE6_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 6 (MTRR_PHYSMASK6_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 7 (MTRR_PHYSBASE7_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 7 (MTRR_PHYSMASK7_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 8 (MTRR_PHYSBASE8_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 8 (MTRR_PHYSMASK8_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Base 9 (MTRR_PHYSBASE9_REG_0_0_0_VTDBAR) Variable-Range MTRR Format Physical Mask 9 (MTRR_PHYSMASK9_REG_0_0_0_VTDBAR) Performance Monitoring Capabilities (PERFCAP_0_0_0_VTDBAR) Enhanced Command (ECMD_0_0_0_VTDBAR) Enhanced Command Response (ERESP_0_0_0_VTDBAR) Enhanced Command Status (ESTS0_0_0_0_VTDBAR) Enhanced Command Status (ESTS1_0_0_0_VTDBAR) Enhanced Command Capabilities (ECMD_CAP0_0_0_0_VTDBAR) Enhanced Command Capabilities (ECMD_CAP1_0_0_0_VTDBAR) Enhanced Command Capabilities (ECMD_CAP2_0_0_0_VTDBAR) Enhanced Command Capabilities (ECMD_CAP3_0_0_0_VTDBAR) Fault Recording Register Low [0] (FRCDL_REG_0_0_0_VTDBAR) Fault Recording Register High [0] (FRCDH_REG_0_0_0_VTDBAR) Invalidate Address Register (IVA_REG_0_0_0_VTDBAR) IOTLB Invalidate Register (IOTLB_REG_0_0_0_VTDBAR)
D11:F0 Vision Processing Unit Device ID and Vendor ID (DEVVENDID) Status and Command (STATUSCOMMAND) Revision ID and Class Code (REVCLASSCODE) Cache Line Latency Header and BIST (CLLATHEADERBIST) Base Address Register (BAR) Base Address Register High (BAR_HIGH) Base Address Register1 (BAR1) Base Address Register1 High (BAR1_HIGH) Base Address Register (BAR2) Base Address Register High (BAR2_HIGH) Subsystem Vendor and Subsystem ID (SUBSYSTEMID) Expansion ROM Base Address (EXPANSION_ROM_BASEADDR) Capabilities Pointer (CAPABILITYPTR) Interrupt (INTERRUPTREG) PCIe Capabilities (PCIECAPREG) PCIe Device Capability (DEVCAPREG) PCIe Device Control Status (DEVCTRLSTAT) PCIe Device Capability2 (DEVCAPREG2) PCIe Device Control2 Status (DEVCTRLSTAT2) Power Management Capability ID (POWERCAPID) Power Management Control And Status (PMECTRLSTATUS) PCI Device Idle Vendor Capability (PCIDEVIDLE_CAP_RECORD) Vendor Specific Extended Capability (DEVID_VEND_SPECIFIC_REG) Software LTR Update MMIO Location (D0I3_CONTROL_SW_LTR_MMIO_REG) Device Idle Pointer (DEVICE_IDLE_POINTER_REG) D0i3 And Power Control Enable (D0I3_MAX_POW_LAT_PG_CONFIG) General Purpose Read Write 1 (GEN_PCI_REGRW1) General Purpose Read Write 2 (GEN_PCI_REGRW2) General Purpose Read Write 3 (GEN_PCI_REGRW3) General Purpose Read Write 4 (GEN_PCI_REGRW4) General Purpose Input (GEN_INPUT_REG) Msix Capability (MSIX_CAP_REG) MSIX Table Pointer (MSIX_TABLE_PTR) MSIX PBA Pointer (MSIX_PBA_PTR) MSI Capability (MSI_CAP_REG) MSI Message Low Address (MSI_ADDR_LOW) MSI Message High Address (MSI_ADDR_HIGH) MSI Message Data (MSI_MSG_DATA) MSI Mask (MSI_MASK) MSI Pending (MSI_PENDING) VTDBAR Base Low Address (VTDBAR_LOW) VTdBAR Base High Address (VTDBAR_HIGH) Manufacturers ID (MANID) ATS Extended Capability Header (ATS_EXT_CAP_HEAD) ATS Capability and Control (ATS_CAP_CONTROL_HEAD) SRIOV PCIE Capability (SRIOV_PCIE_CAP_ID) SRIOV Capability (SRIOV_CAP) SRIOV Control And Status (SRIOV_CTRL_STATUS) Initial and Total VF (TOT_INIT_VF) NUMVF And Function Dependency Link (NUMVF_SRIOV_FUN_DEP_LINK) VF Offset Stride (VF_OFFSET_STRIDE) VF Device ID (VF_DEVICE_ID) SRIOV Supported Page Size (SRIOV_SUP_PAGE_SIZE) SRIOV System Page Size (SRIOV_SYSTEM_PAGE_SIZE) VF Base Address Low (VF_BASE_ADDR_REG_LOW) VF Base Address High (VF_BASE_ADDR_REG_HI) VF Migration Array (VF_MIGRATION_ARRAY)
D2:F0 Processor Graphics Vendor Identification (VID2_0_2_0_PCI) Device Identification (DID2_0_2_0_PCI) PCI Command (PCICMD_0_2_0_PCI) PCI Status (PCISTS2_0_2_0_PCI) Revision Identification and Class Code register (RID2_CC_0_2_0_PCI) Cache Line Size (CLS_0_2_0_PCI) Master Latency Timer (MLT2_0_2_0_PCI) Header Type (HDR2_0_2_0_PCI) Built In Self Test (BIST_0_2_0_PCI) Graphics Translation Table Memory Mapped Range Address (GTTMMADR0_0_2_0_PCI) Graphics Translation Table Memory Mapped Range Address (GTTMMADR1_0_2_0_PCI) Local Memory Bar (LMEMBAR0_0_2_0_PCI) Local Memory Bar (LMEMBAR1_0_2_0_PCI) Subsystem Vendor Identification (SVID2_0_2_0_PCI) Subsystem Identification (SID2_0_2_0_PCI) Capabilities Pointer (CAPPOINT_0_2_0_PCI) Interrupt Line (INTRLINE_0_2_0_PCI) Interrupt Pin (INTRPIN_0_2_0_PCI) Minimum Grant (MINGNT_0_2_0_PCI) Maximum Latency (MAXLAT_0_2_0_PCI) Capability Identifier (CAPID0_0_2_0_PCI) Capabilities Control (CAPCTRL0_0_2_0_PCI) Capabilities A (CAPID0_A_0_2_0_PCI) Capabilities B (CAPID0_B_0_2_0_PCI) PCI Mirror of GMCH Graphics Control (MGGC0_0_2_0_PCI) Device 2 Control (DEV2CTL_0_2_0_PCI) VTd Status (VTD_STATUS_0_2_0_PCI) PCI Express Capability Header (PCIECAPHDR_0_2_0_PCI) PCI Express Capability (PCIECAP_0_2_0_PCI) Device Capabilities (DEVICECAP_0_2_0_PCI) PCI Express Device Control (DEVICECTL_0_2_0_PCI) PCI Express Device Status Register (DEVICESTS_0_2_0_PCI) Link Capabilities (LINKCAP_0_2_0_PCI) Link Control and Status (LINKCTRLSTS_0_2_0_PCI) Device Capabilities 2 (DEVCAP2_0_2_0_PCI) Device Control 2 (DEVCTRL2_0_2_0_PCI) Link Capabilities 2 (LINKCAP2_0_2_0_PCI) Message Signaled Interrupts Capability ID (MSI_CAPID_0_2_0_PCI) Message Control (MC_0_2_0_PCI) Message Address (MA0_0_2_0_PCI) Message Address (MA1_0_2_0_PCI) Message Data (MD_0_2_0_PCI) MSI Mask Bits (MSI_MASK_0_2_0_PCI) MSI Pending Bits (MSI_PEND_0_2_0_PCI) Power Management Capabilities ID (PMCAPID_0_2_0_PCI) Power Management Capabilities (PMCAP_0_2_0_PCI) Power Management Control and Status (PMCS_0_2_0_PCI) Graphics System Event (GSE_0_2_0_PCI) Device 2 Mirror of Protected Audio Video Path Control (PAVPC0_0_2_0_PCI) Device 2 Mirror of Protected Audio Video Path Control (PAVPC1_0_2_0_PCI) Stepping Revision ID (SRID_0_2_0_PCI) ASL Storage (ASLS_0_2_0_PCI) ARI Extended Capability Header (ARI_CAPHDR_0_2_0_PCI) ARI Capability (ARI_CAP_0_2_0_PCI) ARI Control (ARI_CTRL_0_2_0_PCI) PASID Extended Capability Header (PASID_EXTCAP_0_2_0_PCI) PASID Capability (PASID_CAP_0_2_0_PCI) PASID Control (PASID_CTRL_0_2_0_PCI) ATS Extended Capability Header (ATS_EXTCAP_0_2_0_PCI) ATS Capability (ATS_CAP_0_2_0_PCI) ATS Control (ATS_CTRL_0_2_0_PCI) Page Request Extended Capability Header (PR_EXTCAP_0_2_0_PCI) Page Request Control (PR_CTRL_0_2_0_PCI) Page Request Status (PR_STATUS_0_2_0_PCI) Outstanding Page Request Capacity (OPRC_0_2_0_PCI) Outstanding Page Request Allocation (OPRA_0_2_0_PCI) SRIOV Extended Capability Header (SRIOV_ECAPHDR_0_2_0_PCI) SRIOV Capabilities (SRIOV_CAP_0_2_0_PCI) SRIOV Control Register (SRIOV_CTRL_0_2_0_PCI) SRIOV Status (SRIOV_STS_0_2_0_PCI) SRIOV Initial VFs (SRIOV_INITVFS_0_2_0_PCI) SRIOV Total VFs (SRIOV_TOTVFS_0_2_0_PCI) Number Of VFs (SRIOV_NUMOFVFS_0_2_0_PCI) First VF Offset (FIRST_VF_OFFSET_0_2_0_PCI) VF Stride (VF_STRIDE_0_2_0_PCI) VF Device ID (VF_DEVICEID_0_2_0_PCI) Supported Page Sizes (SUPPORTED_PAGE_SIZES_0_2_0_PCI) System Page Sizes (SYSTEM_PAGE_SIZES_0_2_0_PCI) VF BAR0 Lower DWORD (VF_BAR0_LDW_0_2_0_PCI) VF BAR0 Upper DWORD (VF_BAR0_UDW_0_2_0_PCI) VF Migration State Array Offset (VF_MIGST_OFFSET_0_2_0_PCI) LTR Extended Capability Header (LTR_CAPHDR_0_2_0_PCI) Max Snoop Latency Register (MAX_SNP_LAT_0_2_0_PCI) Max No Snoop Latency Register (MAX_NOSNP_LAT_0_2_0_PCI) PF Resizable Capability Header (PF_RESIZE_CAPHDR_0_2_0_PCI) PF Resizable BAR Capability (PF_RESIZE_BAR_CAP_0_2_0_PCI) PF Resizable BAR Control (PF_RESIZABLE_BAR_CTRL_0_2_0_PCI)

Thermal Status GT (THERM_STATUS_GT_0_0_0_MCHBAR_PCU) – Offset 59c0

Contains status information about the processors thermal sensor and automatic thermal monitoring facilities.

Bit Range

Default

Access

Field Name and Description

31

0h

RO/V

(VALID)

This bit indicates that the TEMPERATURE field is valid. It is set by PCODE if the temperature is within valid thermal sensor range.

30:27

1h

RO

(RESOLUTION)

Supported resolution in degrees C.

26:24

0h

RO

Reserved

23:16

0h

RO/V

(TEMPERATURE)

This is a temperature offset in degrees C below theTJ Max temperature. This number is meaningful only if VALID bit in this register is set.

15

0h

RW/0C/V

Cross Domain Limit Log (CROSS_​DOMAIN_​LIMIT_​LOG)

R/WC0 - If set (1), indicates another hardware domain (e.g. processor graphics) has limited energy efficiency optimizations in the processor core domain since the last clearing of this bit or a reset. This bit is sticky, software may clear this bit by writing a zero (0).

14

0h

RO/V

Cross Domain Limit Status (CROSS_​DOMAIN_​LIMIT_​STATUS)

RO - If set (1), indicates another hardware domain (e.g. processor graphics) is currently limiting energy efficiency optimizations in the processor core domain.

13

0h

RW/0C/V

Current Limit Log (CURRENT_​LIMIT_​LOG)

R/WC0 - If set (1), an electrical current limit has been exceeded that has adversely impacted energy efficiency optimizations since the last clearing of this bit or a reset. This bit is sticky, software may clear this bit by writing a zero (0).

12

0h

RO/V

Current Limit Status (CURRENT_​LIMIT_​STATUS)

RO - If set (1), indicates an electrical current limit (e.g. Electrical Design Point/IccMax) is being exceeded and is adversely impacting energy efficiency optimizations.

11

0h

RW/0C/V

Power Limitation Log (POWER_​LIMITATION_​LOG)

R/WC0 - Sticky bit which indicates whether the current P-state is limited by power limitation since the last clearing of this bit or a reset.
SW may clear this bit by writing a zero (0).
For legacy P state method, this bit will be set only if the P-state is limit below the guaranty level.

10

0h

RO/V

Power Limitation Status (POWER_​LIMITATION_​STATUS)

RO - Indicates whether the current P-state is limited by power limitation.
For legacy P state method, this bit will be set only if the P-state is limit below the guaranty level.

9

0h

RW/0C/V

Threshold2 Log (THRESHOLD2_​LOG)

Sticky log bit that asserts on a 0 to 1 or a 1 to 0 transition of the THRESHOLD2_​STATUS bit.
This bit is set by hardware and cleared by software.

8

0h

RO/V

Threshold2 Status (THRESHOLD2_​STATUS)

Indicates that the current temperature is higher than or equal to Threshold 2 temperature.

7

0h

RW/0C/V

Threshold1 Log (THRESHOLD1_​LOG)

Sticky log bit that asserts on a 0 to 1 or a 1 to 0 transition of the THRESHOLD1_​STATUS bit.
This bit is set by hardware and cleared by software.

6

0h

RO/V

Threshold1 Status (THRESHOLD1_​STATUS)

Indicates that the current temperature is higher than or equal to Threshold 1 temperature.

5

0h

RW/0C/V

Out Of Specification Log (OUT_​OF_​SPEC_​LOG)

Sticky log bit indicating that the processor operating out of its thermal specification since the last time this bit was cleared.
This bit is set by hardware on a 0 to 1 transition of OUT_​OF_​SPEC_​STATUS.

4

0h

RO/V

Out Of Specification Status (OUT_​OF_​SPEC_​STATUS)

Status bit indicating that the processor is operating out of its thermal specification. Once set, this bit should only clear on a reset.

3

0h

RW/0C/V

PROCHOT# Log (PROCHOT_​LOG)

Sticky log bit indicating that xxPROCHOT# has been asserted since the last time this bit was cleared by SW.
This bit is set by HW on a 0 to 1 transition of PROCHOT_​STATUS.

2

0h

RO/V

PROCHOT# Status (PROCHOT_​STATUS)

Status bit indicating that xxPROCHOT# is currently being asserted. Tracks IO_​THERM_​COMMAND.prochot_​status

1

0h

RW/0C/V

Thermal Monitor Log (THERMAL_​MONITOR_​LOG)

Sticky log bit indicating that the core has seen a thermal monitor event since the last time software cleared this bit.
This bit is set by hardware on a 0 to 1 transition of THERMAL_​MONITOR_​STATUS.

0

0h

RO/V

Thermal Monitor Status (THERMAL_​MONITOR_​STATUS)

Status bit indicating that the Thermal Monitor has tripped and is currently thermally throttling.