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Vol. 3C 35-73

MODEL-SPECIFIC REGISTERS (MSRS)

63:0

CORE C6 Residency Counter. (R/O)
Value since last reset that this core is in processor-specific C6 

states. Counts at the TSC Frequency.

400H

1024

IA32_MC0_CTL

Module

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

401H

1025

IA32_MC0_STATUS

Module

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

402H

1026

IA32_MC0_ADDR

Module

See Section 15.3.2.3, “IA32_MCi_ADDR MSRs.”
The IA32_MC0_ADDR register is either not implemented or 

contains no address if the ADDRV flag in the IA32_MC0_STATUS 

register is clear. 
When not implemented in the processor, all reads and writes to this 

MSR will cause a general-protection exception.

404H

1028

IA32_MC1_CTL

Module

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

405H

1029

IA32_MC1_STATUS

Module

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

408H

1032

IA32_MC2_CTL

Module

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

409H

1033

IA32_MC2_STATUS

Module

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

40AH

1034

IA32_MC2_ADDR

Module

See Section 15.3.2.3, “IA32_MCi_ADDR MSRs.” 
The IA32_MC2_ADDR register is either not implemented or 

contains no address if the ADDRV flag in the IA32_MC2_STATUS 

register is clear. 
When not implemented in the processor, all reads and writes to this 

MSR will cause a general-protection exception.

40CH

1036

IA32_MC3_CTL

Core

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

40DH

1037

IA32_MC3_STATUS

Core

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

40EH

1038

IA32_MC3_ADDR

Core

See Section 15.3.2.3, “IA32_MCi_ADDR MSRs.”
The MSR_MC3_ADDR register is either not implemented or 

contains no address if the ADDRV flag in the MSR_MC3_STATUS 

register is clear. 
When not implemented in the processor, all reads and writes to this 

MSR will cause a general-protection exception.

410H

1040

IA32_MC4_CTL

Core

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

411H

1041

IA32_MC4_STATUS

Core

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

412H

1042

IA32_MC4_ADDR

Core

See Section 15.3.2.3, “IA32_MCi_ADDR MSRs.”
The MSR_MC4_ADDR register is either not implemented or 

contains no address if the ADDRV flag in the MSR_MC4_STATUS 

register is clear. 
When not implemented in the processor, all reads and writes to this 

MSR will cause a general-protection exception.

414H

1044

IA32_MC5_CTL

Package

See Section 15.3.2.1, “IA32_MCi_CTL MSRs.”

415H

1045

IA32_MC5_STATUS

Package

See Section 15.3.2.2, “IA32_MCi_STATUS MSRS.”

Table 35-6.   MSRs Common to the Silvermont Microarchitecture and Newer Microarchitectures for Intel Atom 

Processors

Address

Register Name

Scope

Bit Description

 Hex

Dec