2 Datasheet
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I2C is a two-wire communications bus/protocol developed by Philips. SMBus is a subset of the I2C bus/protocol and was developed by Intel. Implementations of the I2C bus/protocol may require licenses from various entities, including Philips Electronics N.V. and North American Philips Corporation.
Intel Anti-Theft Technology: No system can provide absolute security under all conditions. Requires an enabled chipset, BIOS, firmware and software and a subscription with a capable Service Provider. Consult your system manufacturer and Service Provider for availability and functionality. Intel assumes no liability for lost or stolen data and/or systems or any other damages resulting thereof. For more information, visit http://www.intel.com/go/anti-theft
Intel High Definition Audio: Requires an Intel HD Audio enabled system. Consult your PC manufacturer for more information. Sound quality will depend on equipment and actual implementation. For more information about Intel HD Audio, refer to http://www.intel.com/design/chipsets/hdaudio.htm
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Intel Active Management Technology (Intel AMT) requires activation and a system with a corporate network connection, an Intel AMT-enabled chipset, network hardware and software. For notebooks, Intel AMT may be unavailable or limited over a host OS-based VPN, when connecting wirelessly, on battery power, sleeping, hibernating or powered off. Results dependent upon hardware, setup & configuration. For more information, visit http://www.intel.com/technology/platform-technology/intel-amt
Intel Trusted Execution Technology: No computer system can provide absolute security under all conditions. Intel Trusted Execution Technology (Intel TXT) requires a computer system with Intel Virtualization Technology, an Intel TXT-enabled processor, chipset, BIOS, Authenticated Code Modules and an Intel TXT-compatible measured launched environment (MLE). The MLE could consist of a virtual machine monitor, an OS or an application. In addition, Intel TXT requires the system to contain a TPM v1.2, as defined by the Trusted Computing Group and specific software for some uses. For more information, see http://www.intel.com/technology/security
Intel Virtualization Technology requires a computer system with an enabled Intel processor, BIOS, virtual machine monitor (VMM). Functionality, performance or other benefits will vary depending on hardware and software configurations. Software applications may not be compatible with all operating systems. Consult your PC manufacturer. For more information, visit http://www.intel.com/go/virtualization
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Copyright 2011, Intel Corporation
Datasheet 3
Contents
1 Introduction ............................................................................................................ 411.1 About This Manual ............................................................................................. 411.2 Overview ......................................................................................................... 44
1.2.1 Capability Overview............................................................................. 451.3 Intel 6 Series Chipset and Intel C200 Series Chipset SKU Definition ..................... 51
2 Signal Description ................................................................................................... 552.1 Direct Media Interface (DMI) to Host Controller ..................................................... 572.2 PCI Express* .................................................................................................... 572.3 PCI Interface .................................................................................................... 582.4 Serial ATA Interface........................................................................................... 602.5 LPC Interface.................................................................................................... 632.6 Interrupt Interface ............................................................................................ 632.7 USB Interface ................................................................................................... 642.8 Power Management Interface.............................................................................. 652.9 Processor Interface............................................................................................ 692.10 SMBus Interface................................................................................................ 692.11 System Management Interface............................................................................ 692.12 Real Time Clock Interface................................................................................... 702.13 Miscellaneous Signals ........................................................................................ 702.14 Intel High Definition Audio Link ......................................................................... 722.15 Controller Link .................................................................................................. 732.16 Serial Peripheral Interface (SPI) .......................................................................... 732.17 Thermal Signals ................................................................................................ 732.18 Testability Signals ............................................................................................. 742.19 Clock Signals .................................................................................................... 742.20 LVDS Signals .................................................................................................... 772.21 Analog Display /VGA DAC Signals ........................................................................ 782.22 Intel Flexible Display Interface (Intel FDI) ........................................................ 782.23 Digital Display Signals........................................................................................ 792.24 General Purpose I/O Signals ............................................................................... 822.25 Manageability Signals ........................................................................................ 862.26 Power and Ground Signals.................................................................................. 872.27 Pin Straps ........................................................................................................ 892.28 External RTC Circuitry........................................................................................ 92
3 PCH Pin States......................................................................................................... 933.1 Integrated Pull-Ups and Pull-Downs ..................................................................... 933.2 Output and I/O Signals Planes and States............................................................. 953.3 Power Planes for Input Signals .......................................................................... 107
4 PCH and System Clocks ......................................................................................... 1134.1 Platform Clocking Requirements ........................................................................ 1134.2 Functional Blocks ............................................................................................ 1164.3 Clock Configuration Access Overview ................................................................. 1174.4 Straps Related to Clock Configuration .................................................
