User`s guide

PCI Conguration Space Map8.4

Table 31 PCI Conguration Space Map

Bus Number

(hex)

Device Number

(hex)

Function Number

(hex)

PCI Interrupt

Routing

Description

00h 00h 00h N.A. Host Bridge

00h 01h 00h Internal PCI Express Graphics Root Port

00h 02h 00h Internal VGA Graphics

00h 02h 01h N.A. VGA Graphics

00h 1Bh 00h Internal Intel High Denition Audio Controller (Azalia)

00h (see Note) 1Ch 00h Internal PCI Express Root Port 0

00h (see Note) 1Ch 01h Internal PCI Express Root Port 1

00h (see Note) 1Ch 02h Internal PCI Express Root Port 2

00h (see Note) 1Ch 03h Internal PCI Express Root Port 3

00h 1Dh 00h Internal UHCI Host Controller 0

00h 1Dh 01h Internal UHCI Host Controller 1

00h 1Dh 02h Internal UHCI Host Controller 2

00h 1Dh 03h Internal UHCI Host Controller 3

00h 1Dh 07h Internal EHCI Host Controller

00h 1Eh 00h Internal PCI to PCI Bridge

00h 1Eh 02h Internal AC97 Audio Controller

00h 1Fh 00h N.A. PCI to LPC Bridge

00h 1Fh 01h Internal Parallel ATA Controller in enhanced mode

00h 1Fh 02h Internal Serial ATA Controller in enhanced mode / Parallel ATA and Serial ATA as combined IDE Controller in

compatible mode

00h 1Fh 03h Internal SMBus Host Controller

01h (see Note) 00h xxh Internal PCI Express Port 0

02h (see Note) 00h xxh Internal PCI Express Port 1

03h (see Note) 00h xxh Internal PCI Express Port 2

04h (see Note) 00h xxh Internal Onboard Gigabit LAN Controller

07h (see Note) 04h xxh INTA-INTD PCI Bus Slot 1

07h (see Note) 05h xxh INTA-INTD PCI Bus Slot 2

07h (see Note) 06h xxh INTA-INTD PCI Bus Slot 3

07h (see Note) 07h xxh INTA-INTD PCI Bus Slot 4

Note

The given bus numbers only apply if all PCI Express Ports are enabled in the BIOS setup. If for example PCI Express Port 2 is disabled then

PCI Express Port 3 will be assigned bus number 3 instead of bus number 4, Port 4 will be assigned bus number 4 and the standard PCI slots will

be assigned bus number 6. Furthermore, the respective PCI Express Root Port is hidden if the corresponding PCI Express Port is disabled.