Intel BX80605I7870 Data Sheet - Page 16

Register Description

16

Datasheet

2.2

Platform Configuration Structure

The processor contains 6 PCI devices within a single physical component. The

configuration registers for these devices are mapped as devices residing on the PCI bus

assigned for the processor socket. Bus number is derived by the max bus range setting

and processor socket number.

•

Device 0:

Generic processor non-core. Device 0, Function 0 contains the generic

non-core configuration registers for the processor and resides at DID (Device ID) of

2C41h. Device 0, Function 1 contains the System Address Decode registers and

resides at DID of 2C01h.

•

Device 2:

Intel QPI. Device 2, Function 0 contains the Intel

®

QuickPath

Interconnect configuration registers for Intel QPI Link 0 and resides at DID of

2C10h. Device 2, Function 1 contains the physical layer registers for Intel QPI Link

0 and resides at DID of 2C11h.

•

Device 3:

Integrated Memory Controller. Device 3, Function 0 contains the general

registers for the Integrated Memory Controller and resides at DID of 2C18h. Device

3, Function 1 contains the Target Address Decode registers for the Integrated

Memory Controller and resides at DID of 2C19h. Device 3, Function 2 contains the

RAS registers for the Integrated Memory Controller and resides at DID of 2C1Ah.

Device 3, Function 4 contains the test registers for the Integrated Memory

Controller and resides at DID of 2C1Ch. Function 2 only applies to processors

supporting registered DIMMs.

•

Device 4:

Integrated Memory Controller Channel 0. Device 4, Function 0 contains

the control registers for Integrated Memory Controller Channel 0 and resides at

DID of 2C20h. Device 4, Function 1 contains the address registers for Integrated

Memory Controller Channel 0 and resides at DID of 2C21h. Device 4, Function 2

contains the rank registers for Integrated Memory Controller Channel 0 and resides

RSVD

Reserved Bit.

This bit is reserved for future expansion and must not be written. The

PCI

Local Bus Specification,

Revision 2.2 requires that reserved bits must be preserved. Any

software that modifies a register that contains a reserved bit is responsible for reading the

register, modifying the desired bits, and writing back the result.

Reserved Bits

Some of the processor registers described in this section contain reserved bits. These bits

are labeled “Reserved”. Software must deal correctly with fields that are reserved. On

reads, software must use appropriate masks to extract the defined bits and not rely on

reserved bits being any particular value. On writes, software must ensure that the values

of reserved bit positions are preserved. That is, the values of reserved bit positions must

first be read, merged with the new values for other bit positions and then written back.

Note that software does not need to perform a read-merge-write operation for the

Configuration Address (CONFIG_ADDRESS) register.

Reserved

Registers

In addition to reserved bits within a register, the processor contains address locations in

the configuration space that are marked either “Reserved” or “Intel Reserved”. The

processor responds to accesses to “Reserved” address locations by completing the host

cycle. When a “Reserved” register location is read, a zero value is returned. (“Reserved”

registers can be 8, 16, or 32 bits in size). Writes to “Reserved” registers have no effect on

the processor. Registers that are marked as “Intel Reserved” must not be modified by

system software. Writes to “Intel Reserved” registers may cause system failure. Reads to

“Intel Reserved” registers may return a non-zero value.

Default Value

upon a Reset

Upon a reset, the processor sets all of its internal configuration registers to predetermined

default states. Some register values at reset are determined by external strapping

options. The default state represents the minimum functionality feature set required to

successfully bring up the system. Hence, it does not represent the optimal system

configuration. It is the responsibility of the system initialization software (usually BIOS) to

properly determine the DRAM configurations, operating parameters and optional system

features that are applicable, and to program the processor registers accordingly.

“ST” appended

to the end of a

bit name

The bit is “sticky” or unchanged by a hard reset. These bits can only be cleared by a

PWRGOOD reset.

Term

Description

Section	Page
1 Introduction	11
1.1 Terminology	11
1.1.1 Processor Terminology	11
1.2 References	13
2 Register Description	15
2.1 Register Terminology	15
2.2 Platform Configuration Structure	16
2.3 Device Mapping	17
2.4 Detailed Configuration Space Maps	18
2.5 PCI Standard Registers	36
2.5.1 VID - Vendor Identification Register	36
2.5.2 DID - Device Identification Register	36
2.5.3 RID - Revision Identification Register	37
2.5.4 CCR - Class Code Register	37
2.5.5 HDR - Header Type Register	38
2.5.6 SID/SVID - Subsystem Identity/Subsystem Vendor Identification Register	38
2.5.7 PCICMD - Command Register	39
2.5.8 PCISTS - PCI Status Register	40
2.6 SAD - System Address Decoder Registers	41
2.6.1 SAD_PAM0123	41
2.6.2 SAD_PAM456	43
2.6.3 SAD_HEN	44
2.6.4 SAD_SMRAM	44
2.6.5 SAD_PCIEXBAR	45
2.6.6 SAD_DRAM_RULE_0, SAD_DRAM_RULE_1, SAD_DRAM_RULE_2, SAD_DRAM_RULE_3 SAD_DRAM_RULE_4, SAD_DRAM_RULE_5 SAD_DRAM_RULE_6, SAD_DRAM_RULE_7	45
2.6.7 SAD_INTERLEAVE_LIST_0, SAD_INTERLEAVE_LIST_1 SAD_INTERLEAVE_LIST_2, SAD_INTERLEAVE_LIST_3 SAD_INTERLEAVE_LIST_4, SAD_INTERLEAVE_LIST_5 SAD_INTERLEAVE_LIST_6, SAD_INTERLEAVE_LIST_7	46
2.7 Intel QPI Link Registers	47
2.7.1 QPI_QPILCL_L0, QPI_QPILCL_L1	47
2.8 Integrated Memory Controller Control Registers	47
2.8.1 MC_CONTROL	47
2.8.2 MC_STATUS	49
2.8.3 MC_SMI_SPARE_DIMM_ERROR_STATUS	50
2.8.4 MC_SMI_SPARE_CNTRL	51
2.8.5 MC_RESET_CONTROL	51
2.8.6 MC_CHANNEL_MAPPER	52
2.8.7 MC_MAX_DOD	53
2.8.8 MC_RD_CRDT_INIT	54
2.8.9 MC_CRDT_WR_THLD	55
2.8.10 MC_SCRUBADDR_LO	55
2.8.11 MC_SCRUBADDR_HI	56
2.9 TAD - Target Address Decoder Registers	57
2.9.1 TAD_DRAM_RULE_0, TAD_DRAM_RULE_1 TAD_DRAM_RULE_2, TAD_DRAM_RULE_3 TAD_DRAM_RULE_4, TAD_DRAM_RULE_5 TAD_DRAM_RULE_6, TAD_DRAM_RULE_7	57
2.9.2 TAD_INTERLEAVE_LIST_0, TAD_INTERLEAVE_LIST_1 TAD_INTERLEAVE_LIST_2, TAD_INTERLEAVE_LIST_3 TAD_INTERLEAVE_LIST_4, TAD_INTERLEAVE_LIST_5 TAD_INTERLEAVE_LIST_6, TAD_INTERLEAVE_LIST_7	58
2.10 Integrated Memory Controller Channel Control Registers	59
2.10.1 MC_CHANNEL_0_DIMM_RESET_CMD MC_CHANNEL_1_DIMM_RESET_CMD MC_CHANNEL_2_DIMM_RESET_CMD	59
2.10.2 MC_CHANNEL_0_DIMM_INIT_CMD MC_CHANNEL_1_DIMM_INIT_CMD MC_CHANNEL_2_DIMM_INIT_CMD	60
2.10.3 MC_CHANNEL_0_DIMM_INIT_PARAMS MC_CHANNEL_1_DIMM_INIT_PARAMS MC_CHANNEL_2_DIMM_INIT_PARAMS	61
2.10.4 MC_CHANNEL_0_DIMM_INIT_STATUS MC_CHANNEL_1_DIMM_INIT_STATUS MC_CHANNEL_2_DIMM_INIT_STATUS	62
2.10.5 MC_CHANNEL_0_DDR3CMD MC_CHANNEL_1_DDR3CMD MC_CHANNEL_2_DDR3CMD	63
2.10.6 MC_CHANNEL_0_REFRESH_THROTTLE_SUPPORT MC_CHANNEL_1_REFRESH_THROTTLE_SUPPORT MC_CHANNEL_2_REFRESH_THROTTLE_SUPPORT	64
2.10.7 MC_CHANNEL_0_MRS_VALUE_0_1 MC_CHANNEL_1_MRS_VALUE_0_1 MC_CHANNEL_2_MRS_VALUE_0_1	64
2.10.8 MC_CHANNEL_0_MRS_VALUE_2 MC_CHANNEL_1_MRS_VALUE_2 MC_CHANNEL_2_MRS_VALUE_2	65
2.10.9 MC_CHANNEL_0_RANK_PRESENT MC_CHANNEL_1_RANK_PRESENT MC_CHANNEL_2_RANK_PRESENT	65
2.10.10 MC_CHANNEL_0_RANK_TIMING_A MC_CHANNEL_1_RANK_TIMING_A MC_CHANNEL_2_RANK_TIMING_A	66
2.10.11 MC_CHANNEL_0_RANK_TIMING_B MC_CHANNEL_1_RANK_TIMING_B MC_CHANNEL_2_RANK_TIMING_B	69
2.10.12 MC_CHANNEL_0_BANK_TIMING MC_CHANNEL_1_BANK_TIMING MC_CHANNEL_2_BANK_TIMING	70
2.10.13 MC_CHANNEL_0_REFRESH_TIMING MC_CHANNEL_1_REFRESH_TIMING MC_CHANNEL_2_REFRESH_TIMING	70
2.10.14 MC_CHANNEL_0_CKE_TIMING MC_CHANNEL_1_CKE_TIMING MC_CHANNEL_2_CKE_TIMING	71
2.10.15 MC_CHANNEL_0_ZQ_TIMING MC_CHANNEL_1_ZQ_TIMING MC_CHANNEL_2_ZQ_TIMING	71
2.10.16 MC_CHANNEL_0_RCOMP_PARAMS MC_CHANNEL_1_RCOMP_PARAMS MC_CHANNEL_2_RCOMP_PARAMS	72
2.10.17 MC_CHANNEL_0_ODT_PARAMS1 MC_CHANNEL_1_ODT_PARAMS1 MC_CHANNEL_2_ODT_PARAMS1	72
2.10.18 MC_CHANNEL_0_ODT_PARAMS2 MC_CHANNEL_1_ODT_PARAMS2 MC_CHANNEL_2_ODT_PARAMS2	73
2.10.19 MC_CHANNEL_0_ODT_MATRIX_RANK_0_3_RD MC_CHANNEL_1_ODT_MATRIX_RANK_0_3_RD MC_CHANNEL_2_ODT_MATRIX_RANK_0_3_RD	73
2.10.20 MC_CHANNEL_0_ODT_MATRIX_RANK_4_7_RD MC_CHANNEL_1_ODT_MATRIX_RANK_4_7_RD MC_CHANNEL_2_ODT_MATRIX_RANK_4_7_RD	74
2.10.21 MC_CHANNEL_0_ODT_MATRIX_RANK_0_3_WR MC_CHANNEL_1_ODT_MATRIX_RANK_0_3_WR MC_CHANNEL_2_ODT_MATRIX_RANK_0_3_WR	74
2.10.22 MC_CHANNEL_0_ODT_MATRIX_RANK_4_7_WR MC_CHANNEL_1_ODT_MATRIX_RANK_4_7_WR MC_CHANNEL_2_ODT_MATRIX_RANK_4_7_WR	74
2.10.23 MC_CHANNEL_0_WAQ_PARAMS MC_CHANNEL_1_WAQ_PARAMS MC_CHANNEL_2_WAQ_PARAMS	75
2.10.24 MC_CHANNEL_0_SCHEDULER_PARAMS MC_CHANNEL_1_SCHEDULER_PARAMS MC_CHANNEL_2_SCHEDULER_PARAMS	76
2.10.25 MC_CHANNEL_0_MAINTENANCE_OPS MC_CHANNEL_1_MAINTENANCE_OPS MC_CHANNEL_2_MAINTENANCE_OPS	76
2.10.26 MC_CHANNEL_0_TX_BG_SETTINGS MC_CHANNEL_1_TX_BG_SETTINGS MC_CHANNEL_2_TX_BG_SETTINGS	77
2.10.27 MC_CHANNEL_0_RX_BGF_SETTINGS MC_CHANNEL_1_RX_BGF_SETTINGS MC_CHANNEL_2_RX_BGF_SETTINGS	77
2.10.28 MC_CHANNEL_0_EW_BGF_SETTINGS MC_CHANNEL_1_EW_BGF_SETTINGS MC_CHANNEL_2_EW_BGF_SETTINGS	78
2.10.29 MC_CHANNEL_0_EW_BGF_OFFSET_SETTINGS MC_CHANNEL_1_EW_BGF_OFFSET_SETTINGS MC_CHANNEL_2_EW_BGF_OFFSET_SETTINGS	78
2.10.30 MC_CHANNEL_0_ROUND_TRIP_LATENCY MC_CHANNEL_1_ROUND_TRIP_LATENCY MC_CHANNEL_2_ROUND_TRIP_LATENCY	78
2.10.31 MC_CHANNEL_0_PAGETABLE_PARAMS1 MC_CHANNEL_1_PAGETABLE_PARAMS1 MC_CHANNEL_2_PAGETABLE_PARAMS1	79
2.10.32 MC_CHANNEL_0_PAGETABLE_PARAMS2 MC_CHANNEL_1_PAGETABLE_PARAMS2 MC_CHANNEL_2_PAGETABLE_PARAMS2	79
2.10.33 MC_TX_BG_CMD_DATA_RATIO_SETTINGS_CH0 MC_TX_BG_CMD_DATA_RATIO_SETTINGS_CH1 MC_TX_BG_CMD_DATA_RATIO_SETTINGS_CH2	80
2.10.34 MC_TX_BG_CMD_OFFSET_SETTINGS_CH0 MC_TX_BG_CMD_OFFSET_SETTINGS_CH1 MC_TX_BG_CMD_OFFSET_SETTINGS_CH2	80
2.10.35 MC_TX_BG_DATA_OFFSET_SETTINGS_CH0 MC_TX_BG_DATA_OFFSET_SETTINGS_CH1 MC_TX_BG_DATA_OFFSET_SETTINGS_CH2	80
2.10.36 MC_CHANNEL_0_ADDR_MATCH MC_CHANNEL_1_ADDR_MATCH MC_CHANNEL_2_ADDR_MATCH	81
2.10.37 MC_CHANNEL_0_ECC_ERROR_MASK MC_CHANNEL_1_ECC_ERROR_MASK MC_CHANNEL_2_ECC_ERROR_MASK	82
2.10.38 MC_CHANNEL_0_ECC_ERROR_INJECT MC_CHANNEL_1_ECC_ERROR_INJECT MC_CHANNEL_2_ECC_ERROR_INJECT	82
2.10.39 Error Injection Implementation	83
2.11 Integrated Memory Controller Channel Address Registers	84
2.11.1 MC_DOD_CH0_0, MC_DOD_CH0_1, MC_DOD_CH0_2	84
2.11.2 MC_DOD_CH1_0, MC_DOD_CH1_1, MC_DOD_CH1_2	85
2.11.3 MC_DOD_CH2_0, MC_DOD_CH2_1, MC_DOD_CH2_2	86
2.11.4 MC_SAG_CH0_0, MC_SAG_CH0_1, MC_SAG_CH0_2 MC_SAG_CH0_3, MC_SAG_CH0_4, MC_SAG_CH0_5 MC_SAG_CH0_6, MC_SAG_CH0_7, MC_SAG_CH1_...	87
2.12 Integrated Memory Controller Channel Rank Registers	88
2.12.1 MC_RIR_LIMIT_CH0_0, MC_RIR_LIMIT_CH0_1 MC_RIR_LIMIT_CH0_2, MC_RIR_LIMIT_CH0_3 MC_RIR_LIMIT_CH0_4, MC_RIR_LIMIT_CH0_5 MC_R...	88
2.12.2 MC_RIR_WAY_CH0_0, MC_RIR_WAY_CH0_1 MC_RIR_WAY_CH0_2, MC_RIR_WAY_CH0_3 MC_RIR_WAY_CH0_4, MC_RIR_WAY_CH0_5 MC_RIR_WAY_CH0_6...	89
2.12.3 MC_RIR_WAY_CH1_0, MC_RIR_WAY_CH1_1 MC_RIR_WAY_CH1_2, MC_RIR_WAY_CH1_3 MC_RIR_WAY_CH1_4, MC_RIR_WAY_CH1_5 MC_RIR_WAY_CH1_6...	90
2.12.4 MC_RIR_WAY_CH2_0, MC_RIR_WAY_CH2_1 MC_RIR_WAY_CH2_2, MC_RIR_WAY_CH2_3 MC_RIR_WAY_CH2_4, MC_RIR_WAY_CH2_5 MC_RIR_WAY_CH2_6...	91
2.13 Memory Thermal Control	92
2.13.1 MC_THERMAL_CONTROL0 MC_THERMAL_CONTROL1 MC_THERMAL_CONTROL2	92
2.13.2 MC_THERMAL_STATUS0 MC_THERMAL_STATUS1 MC_THERMAL_STATUS2	92
2.13.3 MC_THERMAL_DEFEATURE0 MC_THERMAL_DEFEATURE1 MC_THERMAL_DEFEATURE2	93
2.13.4 MC_THERMAL_PARAMS_A0 MC_THERMAL_PARAMS_A1 MC_THERMAL_PARAMS_A2	93
2.13.5 MC_THERMAL_PARAMS_B0 MC_THERMAL_PARAMS_B1 MC_THERMAL_PARAMS_B2	94
2.13.6 MC_COOLING_COEF0 MC_COOLING_COEF1 MC_COOLING_COEF2	94
2.13.7 MC_CLOSED_LOOP0 MC_CLOSED_LOOP1 MC_CLOSED_LOOP2	95
2.13.8 MC_THROTTLE_OFFSET0 MC_THROTTLE_OFFSET1 MC_THROTTLE_OFFSET2	95
2.13.9 MC_RANK_VIRTUAL_TEMP0 MC_RANK_VIRTUAL_TEMP1 MC_RANK_VIRTUAL_TEMP2	96
2.13.10 MC_DDR_THERM_COMMAND0 MC_DDR_THERM_COMMAND1 MC_DDR_THERM_COMMAND2	96
2.13.11 MC_DDR_THERM_STATUS0 MC_DDR_THERM_STATUS1 MC_DDR_THERM_STATUS2	97
2.14 Integrated Memory Controller Miscellaneous Registers	97
2.14.1 MC_DIMM_CLK_RATIO_STATUS	97

Intel BX80605I7870 Data Sheet - Page 16

Platform Configuration Structure

Page 16 highlights