Intel i7-2600 CM8062300834302S User Manual
Product codes
CM8062300834302S
Datasheet, Volume 2
59
Processor Configuration Registers
2.5.13
DEVEN—Device Enable Register
This register allows for enabling/disabling of PCI devices and functions that are within
the processor package. In the following table the bit definitions describe the behavior of
all combinations of transactions to devices controlled by this register.
the processor package. In the following table the bit definitions describe the behavior of
all combinations of transactions to devices controlled by this register.
All the bits in this register are Intel TXT Lockable.
B/D/F/Type:
0/0/0/PCI
Address Offset:
54–57h
Reset Value:
0000_209Fh
Access:
RW-L, RO, RW
Size:
32 bits
BIOS Optimal Default
00_0000h
Bit
Attr
Reset
Value
RST/
PWR
Description
31:15
RO
0h
Reserved
14
RO
0h
Reserved
13
RW-L
1b
Uncore
PEG60 Enable (D6F0EN)
0 = Disabled. Bus 0 Device 6 Function 0 is disabled and hidden.
0 = Disabled. Bus 0 Device 6 Function 0 is disabled and hidden.
1 = Enabled. Bus 0 Device 6 Function 0 is enabled and visible.
This bit will be set to 0b and remain 0b if PEG60 capability is
This bit will be set to 0b and remain 0b if PEG60 capability is
disabled.
12:8
RO
0h
Reserved
7
RO
0h
Reserved
6:5
RO
0h
Reserved
4
RW-L
1b
Uncore
Internal Graphics Engine (D2EN)
0 = Disabled. Bus 0 Device 2 is disabled and hidden
0 = Disabled. Bus 0 Device 2 is disabled and hidden
1 = Enabled. Bus 0 Device 2 is enabled and visible
This bit will be set to 0b and remain 0b if Device 2 capability is
This bit will be set to 0b and remain 0b if Device 2 capability is
disabled.
3
RW-L
1b
Uncore
PEG10 Enable (D1F0EN)
0 = Disabled. Bus 0 Device 1 Function 0 is disabled and hidden.
0 = Disabled. Bus 0 Device 1 Function 0 is disabled and hidden.
1 = Enabled. Bus 0 Device 1 Function 0 is enabled and visible.
This bit will be set to 0b and remain 0b if PEG10 capability is
This bit will be set to 0b and remain 0b if PEG10 capability is
disabled.
2
RW-L
1b
Uncore
PEG11 Enable (D1F1EN)
0 = Disabled. Bus 0 Device 1 Function 1 is disabled and hidden.
0 = Disabled. Bus 0 Device 1 Function 1 is disabled and hidden.
1 = Enabled. Bus 0 Device 1 Function 1 is enabled and visible.
This bit will be set to 0b and remain 0b if:
This bit will be set to 0b and remain 0b if:
• PEG11 is disabled by strap (PEG0CFGSEL)
1
RW-L
1b
Uncore
PEG12 Enable (D1F2EN)
0 = Disabled. Bus 0 Device 1 Function 2 is disabled and hidden.
0 = Disabled. Bus 0 Device 1 Function 2 is disabled and hidden.
1 = Enabled. Bus 0 Device 1 Function 2 is enabled and visible.
This bit will be set to 0b and remain 0b if:
This bit will be set to 0b and remain 0b if:
• PEG12 is disabled by strap (PEG0CFGSEL)
0
RO
1b
Uncore
Host Bridge (D0EN)
Bus 0 Device 0 Function 0 may not be disabled and is therefore
Bus 0 Device 0 Function 0 may not be disabled and is therefore
hardwired to 1.