307013-003 Datasheet, PDF (43/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Introduction
The ICH7 incorporates a variety of PCI functions that are divided into six logical devices
(B0:D27, B0:D28, B0:D29, B0:D30, B0:D31 and B1:D8) as listed in Table 1-2. D30 is
the DMI-to-PCI bridge and the AC ’97 Audio and Modem controller functions, D31
contains the PCI-to-LPC bridge, IDE controller, SATA controller, and SMBus controller,
D29 contains the four USB UHCI controllers and one USB EHCI controller, and D27
contains the PCI Express root ports. B1:D8 is the integrated LAN controller.
Table 1-2.
PCI Devices and Functions
Bus:Device:Function
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, ICH7DH, and ICH7-M DH
Only)
PCI Express Port 6 (Intel ICH7R, ICH7DH, and ICH7-M DH Only)
Intel^® High Definition Audio Controller
LAN Controller (Desktop and Mobile Only)
NOTES:
1.
The PCI-to-LPC bridge contains registers that control LPC, Power Management, System
Management, GPIO, Processor Interface, RTC, Interrupts, Timers, and DMA.
The following sub-sections provide an overview of the ICH7 capabilities.
Direct Media Interface (DMI)
Direct Media Interface (DMI) is the chip-to-chip connection between the Memory
Controller Hub / Graphics Memory Controller Hub ((G)MCH) and I/O Controller Hub 7
(ICH7). This high-speed interface integrates advanced priority-based servicing allowing
for concurrent traffic and true isochronous transfer capabilities. Base functionality is
completely software-transparent, permitting current and legacy software to operate
normally.
Intel ^® ICH7 Family Datasheet
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