82801AB datasheet(22/414 Pages) INTEL

22 / 414 page

Introduction

1-2

82801AA and 82801AB Datasheet

Chapter 5. Functional Description

Chapter 5 provides a detailed description of the functions in the ICH. All functions in this datasheet

are abbreviated using the following nomenclature; Device:Function. This manual abbreviates

devices with D30 and D31 and functions with F0, F1, F2, F3, F4, F5 and F6. For example, Device

31 Function 5 is abbreviated as D31:F5.

Chapter 6. Register Memory and I/O Address Maps

Chapter 6 provides an overview of the registers, fixed I/O ranges, variable I/O ranges, and memory

ranges decoded by the ICH.

Chapter 7. Hub Interface to PCI Bridge Registers

Chapter 7 provides a detail description of all registers that reside in the Hub Link to PCI bridge.

This bridge resides at Device 30, Function 0 (D30:F0).

Chapter 8. LPC Bridge Registers

Chapter 8 provides a detail description of all registers that reside in the LPC bridge. This bridge

resides at Device 31, Function 0 (D31:F0). This function contains registers for many different units

within the ICH including DMA, Timers, Interrupts, Processor Interface, GPIO, Power

Management, System Management and RTC.

Chapter 9. IDE Controller Registers

Chapter 9 provides a detail description of all registers that reside in the IDE controller. This

controller resides at Device 31, Function 1 (D31:F1).

Chapter 10. USB Controller Registers

Chapter 10 provides a detail description of all registers that reside in the USB controller. This

controller resides at Device 31, Function 2 (D31:F2).

Chapter 11. SMBus Controller Registers

Chapter 11 provides a detail description of all registers that reside in the SMBus controller. This

controller resides at Device 31, Function 3 (D31:F3).

Chapter 12. AC’97 Audio Controller Registers

Chapter 12 provides a detail description of all registers that reside in the audio controller. This

controller resides at Device 31, Function 5 (D31:F5). Note that this section of the EDS does not

include the native audio mixer registers. Accesses to the mixer registers are forwarded over the

AC-link to the codec where the registers reside.

Chapter 13. AC’97 Modem Controller Registers

Chapter 13 provides a detail description of all registers that reside in the modem controller. This

controller resides at Device 31, Function 6 (D31:F6). Note that this section of the EDS does not

include the modem mixer registers. Accesses to the mixer registers are forwarded over the AC-link

to the codec where the registers reside.

Chapter 14. Electrical Characteristics

Chapter 14 provides all AC and DC characteristics including detailed timing diagrams.

Chapter 15. Pinout and Package Information

Chapter 15 provides a table of each signal and its ball assignment in the 241 BGA package. A

footprint of the ballout is also provided. This chapter also provides the physical dimensions and

characteristics of the 241 BGA package.

Chapter 16. Testability

Chapter 17 provides details about the implementation of two test modes provided in the ICH;

NAND Tree and High-Z.

Appendix A. Register Index

Appendix A provides a list of registers and the location within the datasheet where the register

description can be found.

Appendix B. Register Bit Index

Appendix B provides an alphabetical list of the register bits (by bit name) and the location within

the datasheet where the register bit description can be found.

82801AB Datasheet(PDF) 22 Page - Intel Corporation

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