Document Number: 322169-004

Intel 5 Series Chipset and Intel 3400 Series ChipsetDatasheet

January 2012

2 Datasheet

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Datasheet 3

Contents

1 Introduction ............................................................................................................ 431.1 About This Manual ............................................................................................. 431.2 Overview ......................................................................................................... 47

1.2.1 Capability Overview............................................................................. 491.3 Intel 5 Series Chipset and Intel 3400 Series Chipset SKU Definition ..................... 551.4 Reference Documents ........................................................................................ 57

2 Signal Description ................................................................................................... 592.1 Direct Media Interface (DMI) to Host Controller ..................................................... 612.2 PCI Express* .................................................................................................... 612.3 Firmware Hub Interface...................................................................................... 622.4 PCI Interface .................................................................................................... 632.5 Serial ATA Interface........................................................................................... 652.6 LPC Interface.................................................................................................... 682.7 Interrupt Interface ............................................................................................ 682.8 USB Interface ................................................................................................... 692.9 Power Management Interface.............................................................................. 712.10 Processor Interface............................................................................................ 742.11 SMBus Interface................................................................................................ 742.12 System Management Interface............................................................................ 752.13 Real Time Clock Interface................................................................................... 752.14 Miscellaneous Signals ........................................................................................ 762.15 Intel High Definition Audio Link ......................................................................... 772.16 Controller Link .................................................................................................. 782.17 Serial Peripheral Interface (SPI) .......................................................................... 782.18 Intel Quiet System Technology and Thermal Reporting......................................... 792.19 JTAG Signals .................................................................................................... 802.20 Clock Signals .................................................................................................... 802.21 LVDS Signals (Mobile only) ................................................................................. 822.22 Analog Display /CRT DAC Signals ........................................................................ 832.23 Intel Flexible Display Interface (FDI).................................................................. 842.24 Digital Display Signals........................................................................................ 842.25 General Purpose I/O Signals ............................................................................... 872.26 Manageability Signals ........................................................................................ 902.27 Power and Ground Signals.................................................................................. 912.28 Pin Straps ........................................................................................................ 93

2.28.1 Functional Straps ................................................................................ 932.28.2 External RTC Circuitry.......................................................................... 97

3 PCH Pin States......................................................................................................... 993.1 Integrated Pull-Ups and Pull-Downs ..................................................................... 993.2 Output and I/O Signals Planes and States........................................................... 1013.3 Power Planes for Input Signals .......................................................................... 112

4 System Clocks ....................................................................................................... 1195 Functional Description .........................................