307013-003 Datasheet, PDF (254/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Register and Memory Mapping
6.1
PCI Devices and Functions
Note:
b
Table 6-1.
The ICH7 incorporates a variety of PCI functions as shown in Table 6-1. These functions
are divided into six logical devices (B0:D30, B0:D31, B0:D29, B0:D28, B0:D27 and
B1:D8). D30 contains the DMI interface-to-PCI bridge and the AC ’97 Audio and Modem
controller. D31 contains the PCI-to-LPC bridge, IDE controller, SATA controller, and the
SMBus controller. D29 contains the four USB UHCI controllers and one USB EHCI
controller. D27 contains the Intel High Definition Audio controller. B1:D8 is the
integrated LAN controller.
From a software perspective, the integrated LAN controller resides on the ICH7’s
external PCI bus. This is typically Bus 1, but may be assigned a different number
depending on system configuration.
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, they can individually be disabled.
The integrated LAN controller will be disabled if no Platform LAN Connect component is
detected (See Chapter 5.3). When a function is disabled, it does not 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.
PCI Devices and Functions
Bus:Device:Function¹
Function Description
Bus 0:Device 30:Function 0
Bus 0:Device 30:Function 2
Bus 0:Device 30:Function 3
Bus 0:Device 31:Function 0
Bus 0:Device 31:Function 1
Bus 0:Device 31:Function 2
Bus 0:Device 31:Function 3
Bus 0:Device 29:Function 0
Bus 0:Device 29:Function 1
Bus 0:Device 29:Function 2
Bus 0:Device 29:Function 3
Bus 0:Device 29:Function 7
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 27:Function 0
Bus n:Device 8:Function 0
PCI-to-PCI Bridge
AC ’97 Audio Controller (Desktop and Mobile Only)
AC ’97 Modem Controller (Desktop and Mobile Only)
LPC Controller¹
IDE Controller
SATA Controller (Desktop and Mobile Only)
SMBus Controller
USB UHCI Controller #1
USB UHCI Controller #2
USB UHCI Controller #3
USB UHCI Controller #4
USB 2.0 EHCI Controller
PCI Express* Port 1 (Desktop and Mobile Only)
PCI Express Port 2 (Desktop and Mobile Only)
PCI Express Port 3 (Desktop and Mobile Only)
PCI Express Port 4 (Desktop and Mobile Only)
PCI Express Port 5 (Intel^® ICH7R, and ICH7DH, and ICH7-M
Only)
PCI Express Port 6 (Intel^® ICH7R, and ICH7DH, and ICH7-M
Only)
Intel^® High Definition Audio Controller
LAN Controller (Desktop and Mobile Only)
NOTES:
1.
The LPC controller contains registers that control LPC, Power Management, System
Management, GPIO, processor Interface, RTC, Interrupts, Timers, DMA.
254
Intel ^® ICH7 Family Datasheet