® Intel I/O Controller Hub 7 (ICH7) Family Datasheet
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— For the Intel 82801GB ICH7, 82801GR ICH7R, 82801GDH ICH7DH,
82801GBM ICH7-M, 82801GHM ICH7-M DH, and 82801GU ICH7-U I/O
Controller Hubs
April 2007
Document Number: 307013-003
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future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
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The Intel I/O Controller Hub 7 (ICH7) Family chipset component may contain design defects or errors known as errata which may cause the product to
deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
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I C is a two-wire communications bus/protocol developed by Philips. SMBus is a subset of the I C bus/protocol and was developed by Intel.
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Implementations of the I C bus/protocol may require licenses from various entities, including Philips Electronics N.V. and North American Philips
Corporation. Alert on LAN is a result of the Intel-IBM Advanced Manageability Alliance and a trademark of IBM.
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Copyright © 2005–2007, Intel Corporation
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Intel ICH7 Family Datasheet
Contents
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Introduction ............................................................................................................ 39
1.1 Overview ......................................................................................................... 42
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1.2 Intel ICH7 Family High-Level Component Differences ........................................... 50
Signal Description ................................................................................................... 51
2.1 Direct Media Interface (DMI) to Host Controller ..................................................... 55
2.2 PCI Express* (Desktop and Mobile Only) .............................................................. 55
2.3 Platform LAN Connect Interface (Desktop and Mobile Only)..................................... 56
2.4 EEPROM Interface (Desktop and Mobile Only)........................................................ 56
2.5 Firmware Hub Interface (Desktop and Mobile Only)................................................ 56
2.6 PCI Interface .................................................................................................... 57
2.7 Serial ATA Interface (Desktop and Mobile Only) ..................................................... 59
2.8 IDE Interface.................................................................................................... 60
2.9 LPC Interface.................................................................................................... 62
2.10 Interrupt Interface ............................................................................................ 62
2.11 USB Interface ................................................................................................... 63
2.12 Power Management Interface.............................................................................. 64
2.13 Processor Interface............................................................................................ 66
2.14 SMBus Interface................................................................................................ 68
2.15 System Management Interface............................................................................ 68
2.16 Real Time Clock Interface................................................................................... 69
2.17 Other Clocks..................................................................................................... 69
2.18 Miscellaneous Signals ........................................................................................ 70
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2.19 AC ’97/Intel High Definition Audio Link............................................................... 71
2.20 Serial Peripheral Interface (SPI) (Desktop and Mobile Only) .................................... 72
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2.21 Intel Quick Resume Technology (Intel ICH7DH Only) ......................................... 72
2.22 General Purpose I/O Signals ............................................................................... 72
2.23 Power and Ground............................................................................................. 74
2.24 Pin Straps ........................................................................................................ 76
2.24.1 Functional Straps ................................................................................... 76
2.24.2 External RTC Circuitry............................................................................. 78
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Intel ICH7 Pin States............................................................................................. 79
3.1
Read the full ®
Intel I/O Controller Hub 7 (ICH7)
Family Datasheet.