Intel D425 AU80610006252AA User Manual
Product codes
AU80610006252AA
Processor Configuration Registers
Datasheet
133
1.10.2
DID2 - Device Identification
B/D/F/Type: 0/2/1/PCI
Address Offset:
2-3h
Default Value:
A002h
Access:
RO;
Size: 16
bits
This register is unique in Function 1 (the Function 0 DID is separate). This difference
in Device ID is necessary for allowing distinct Plug and Play enumeration of function 1
when both function 0 and function 1 have the same class code.
in Device ID is necessary for allowing distinct Plug and Play enumeration of function 1
when both function 0 and function 1 have the same class code.
Bit Access
Default
Value
Description
15:0 RO
A002h
Device Identification Number (DID):
Device Identification Number (DID): This is a
16 bit value Identifier assigned to the CPU Uncore
core/primary PCI device.
DT =A002h
MB =A012h
Device Identification Number (DID): This is a
16 bit value Identifier assigned to the CPU Uncore
core/primary PCI device.
DT =A002h
MB =A012h
1.10.3
PCICMD2 - PCI Command
B/D/F/Type: 0/2/1/PCI
Address Offset:
4-5h
Default Value:
0000h
Access:
RO; RW;
Size: 16
bits
This 16-bit register provides basic control over the IGD's ability to respond to PCI
cycles. The PCICMD Register in the IGD disables the IGD PCI compliant master
cycles. The PCICMD Register in the IGD disables the IGD PCI compliant master
accesses to main memory.
Bit Access Default
Value
Description
15:11 RO
00h Reserved ():
10 RO 0b
Reserved ():
9 RO 0b
Fast Back-to-Back (FB2B):
Not Implemented. Hardwired to 0.
Not Implemented. Hardwired to 0.
8 RO 0b
SERR Enable (SERRE):
Not Implemented. Hardwired to 0.
Not Implemented. Hardwired to 0.
7 RO 0b
Address/Data Stepping Enable (ADSTEP):
Not Implemented. Hardwired to 0.
Not Implemented. Hardwired to 0.
6 RO 0b
Parity Error Enable (PERRE):
Not Implemented. Hardwired to 0. Since the
IGD belongs to the category of devices that
does not corrupt programs or data in system
memory or hard drives, the IGD ignores any
parity error that it detects and continues with
normal operation.
Not Implemented. Hardwired to 0. Since the
IGD belongs to the category of devices that
does not corrupt programs or data in system
memory or hard drives, the IGD ignores any
parity error that it detects and continues with
normal operation.