Pci Devices And Functions On Processor; Register Attribute Modifiers - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet

Table 2-2.

Register Attribute Modifiers

Attribute
Modifier
S
-K
-L
-O
-FW
-V
2.2

PCI Devices and Functions on Processor

PCI Express Controller
PCI Express Controller
PCI Express Controller
Integrated Graphics Device
PCI Express Controller
Note: Not all devices are enabled in all configurations.
14
Applicable
Attribute
RO (w/ -V)
Sticky: These bits are only re-initialized to their default value by a "Power Good
RW
Reset".
RW1C
Note: Does not apply to RO (constant) bits.
RW1S
Key: These bits control the ability to write other bits (identified with a 'Lock'
RW
modifier)
RW Lock: Hardware can make these bits "Read Only" via a separate configuration
bit or other logic.
WO
Note:
Mutually exclusive with 'Once' modifier.
RW Once: After reset, these bits can only be written by software once, after which
they become "Read Only".
Note: Mutually exclusive with 'Lock' modifier and does not make sense with
WO
'Variant' modifier.
Firmware Write: The value of these bits can be updated by firmware (PCU,
RO
TAP, etc.).
Variant: The value of these bits can be updated by hardware.
RO Note: RW1C and RC bits are variant by definition and therefore do not need
to be modified.
Description
DRAM Controller
Processor Configuration Registers
Description
DID Device
0100h 0
0101h 1
0105h 1
0109h 1
0102h 2
010Dh 6
Function
0
0
1
2
0
0
Datasheet, Volume 2