Pci Devices And Functions - Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet

9.1

PCI Devices and Functions

The PCH incorporates a variety of PCI devices and functions, as shown in
If for some reason, the particular system platform does not want to support any one of
the Device Functions, with the exception of D30:F0, can individually be disabled. The
integrated Gigabit Ethernet controller will be disabled if no Platform LAN Connect
component is detected (See
appear at all to the software. A disabled function will not respond to any register reads
or writes, insuring that these devices appear hidden to software.
b
Table 9-1. PCI Devices and Functions
Bus 0:Device 30:Function 0
Bus 0:Device 31:Function 0
Bus 0:Device 31:Function 2
Bus 0:Device 31:Function 3
Bus 0:Device 31:Function 5
Bus 0:Device 31:Function 6
Bus 0:Device 29:Function 0
Bus 0:Device 26:Function 0
Bus 0:Device 28:Function 0
Bus 0:Device 28:Function 1
Bus 0:Device 28:Function 2
Bus 0:Device 28:Function 3
Bus 0:Device 28:Function 4
Bus 0:Device 28:Function 5
Bus 0:Device 28:Function 6
Bus 0:Device 28:Function 7
Bus 0:Device 27:Function 0
Bus 0:Device 25:Function 0
Bus 0:Device 22:Function 0
Bus 0:Device 22:Function 1
Bus 0:Device 22:Function 2
Bus 0:Device 22:Function 3
NOTES:
1. The PCI-to-LPC bridge contains registers that control LPC, Power Management, System
Management, GPIO, Processor Interface, RTC, Interrupts, Timers, and DMA.
2. SATA controller 2 (D31:F5) is only visible when D31:F2 CC.SCC=01h.
3. Prior to BIOS initialization of the PCH USB subsystem, the EHCI controllers will appear as
Function 7. After BIOS initialization, the EHCI controllers will be Function 0.
4. This table shows the default PCI Express Function Number-to-Root Port mapping. Function
numbers for a given root port are assignable through the "Root Port Function Number and
Hide for PCI Express Root Ports" register (RCBA+0404h).
350
Section
Bus:Device:Function
3
3
5.3). When a function is disabled, it does not
Function Description
PCI-to-PCI Bridge
1
LPC Controller
SATA Controller #1
SMBus Controller
2
SATA Controller #2
Thermal Subsystem
USB EHCI Controller #1
USB EHCI Controller #2
PCI Express* Port 1
PCI Express Port 2
PCI Express Port 3
PCI Express Port 4
PCI Express Port 5
PCI Express Port 6
PCI Express Port 7
PCI Express Port 8
®
Intel High Definition Audio Controller
Gigabit Ethernet Controller
®
Intel Management Engine Interface #1
Intel Management Engine Interface #2
IDE-R
KT
Register and Memory Mapping
Table 9-1.
Datasheet