NH82801HEM S LA5R Intel, NH82801HEM S LA5R Datasheet - Page 283

• Manufacturer Part Number: NH82801HEM S LA5R
• Manufacturer: Intel

Specifications of NH82801HEM S LA5R

• Lead Free Status / RoHS Status: Compliant

Chipset Configuration Registers
7.1.42
Intel
®
ICH8 Family Datasheet
RPFN—Root Port Function Number for PCI Express* Root
Ports
Offset Address: 0238–1E03h
Default Value:
For the PCI Express root ports, the assignment of a function number to a root port is
not fixed. BIOS may re-assign the function numbers on a port by port basis. This
capability will allow BIOS to disable/hide any root port and have still have functions 0
thru N-1 where N is the total number of enabled root ports.
Port numbers will remain fixed to a physical root port.
The existing root port Function Disable registers operate on physical ports (not
functions).
Port Configuration (1x4, 4x1, etc.) is not affected by the logical function number
assignment and is associated with physical ports.
31:23
22:20
18:16
14:12
10:8
6:4
2:0
Bit
19
15
11
7
3
Reserved
Root Port 6 Function Number (RP6FN) — R/WO. These bits set the function
number for PCI Express Root Port 6. This root port function number must be a
unique value from the other root port function numbers
Reserved
Root Port 5 Function Number (RP5FN) — R/WO. These bits set the function
number for PCI Express Root Port 5. This root port function number must be a
unique value from the other root port function numbers
Reserved
Root Port 4 Function Number (RP4FN) — R/WO. These bits set the function
number for PCI Express Root Port 4. This root port function number must be a
unique value from the other root port function numbers
Reserved
Root Port 3 Function Number (RP3FN) — R/WO. These bits set the function
number for PCI Express Root Port 3. This root port function number must be a
unique value from the other root port function numbers
Reserved
Root Port 2 Function Number (RP2FN) — R/WO. These bits set the function
number for PCI Express Root Port 2. This root port function number must be a
unique value from the other root port function numbers
Reserved
Root Port 1 Function Number (RP1FN) — R/WO. These bits set the function
number for PCI Express Root Port 1. This root port function number must be a
unique value from the other root port function numbers
00543210h
Description
Attribute:
Size:
R/WO, RO
32-bit
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