INTEL82801 データシートの表示（PDF） - Intel

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INTEL82801

Intel® 82801AA (ICH) and Intel® 82801AB (ICH0) I/O Controller Hub

Intel 

Contents

1

Introduction ................................................................................................................1-1

1.1 About this Manual .........................................................................................1-1

1.2 Overview.......................................................................................................1-3

2

Signal Description......................................................................................................2-1

2.1 Hub Interface ................................................................................................2-1

2.2 Firmware Hub Interface ................................................................................2-1

2.3 PCI Interface.................................................................................................2-2

2.4 IDE Interface.................................................................................................2-4

2.5 Low Pin Count (LPC) Interface .....................................................................2-5

2.6 Interrupt Interface .........................................................................................2-6

2.7 USB Interface ...............................................................................................2-6

2.8 Power Management Interface.......................................................................2-7

2.9 Processor Interface.......................................................................................2-8

2.10 SMBus Interface ...........................................................................................2-9

2.11 System Management Interface.....................................................................2-9

2.12 Real Time Clock Interface ............................................................................2-9

2.13 Other Clocks ...............................................................................................2-10

2.14 Miscellaneous Signals ................................................................................2-10

2.15 AC’97 Link ..................................................................................................2-10

2.16 General Purpose I/O...................................................................................2-11

2.17 Power and Ground......................................................................................2-12

2.18 Pin Straps ...................................................................................................2-12

2.18.1 Functional Strap.............................................................................2-12

2.18.2 Test Straps ....................................................................................2-13

2.18.3 External RTC Circuitry ...................................................................2-13

2.18.4 5VREF / Vcc3_3 Sequencing Requirements .................................2-14

3

Power Planes and Pin States ....................................................................................3-1

3.1 Power Planes................................................................................................3-1

3.2 Output and I/O Signal Planes and States .....................................................3-1

3.3 Power Planes for Input Signals.....................................................................3-4

3.4 Integrated Pull-Ups and Pull-Downs.............................................................3-5

3.5 IDE Integrated Series Termination Resistors ...............................................3-5

4

Clock Domains...........................................................................................................4-1

5

Functional Description ...............................................................................................5-1

5.1 Hub Interface to PCI Bridge (D30:F0)...........................................................5-1

5.1.1 PCI Bus Interface.............................................................................5-1

5.1.2 PCI-to-PCI Bridge Model .................................................................5-1

5.1.3 IDSEL to Device Number Mapping ..................................................5-2

5.1.4 SERR#/PERR#/NMI# Functionality .................................................5-2

vi

82801AA and 82801AB Datasheet

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