82801CA Datasheet, PDF (29/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

Introduction
Introduction
1
1.1
About This Datasheet
This datasheet is intended for Original Equipment Manufacturers and BIOS vendors that create
ICH3-Server based products. Throughout this datasheet, all references to ICH3 refer to the Intel^®
82801CA ICH3-S part. This datasheet assumes a working knowledge of the vocabulary and
principles of USB, IDE, AC ’97, SMBus, PCI, ACPI, and LPC. Although some details of these
features are described within this datasheet, refer to the individual industry specifications listed in
Table 1-1 for the complete details.
Table 1-1. Industry Specifications
Specification
Location
LPC
AC ’97
WfM
SMBus
PCI
USB
ACPI
http://developer.intel.com/design/chipsets/industry/lpc.htm
http://developer.intel.com/ial/scalableplatforms/audio/index.htm#97spec
http://developer.intel.com/ial/WfM/usesite.htm
http://www.smbus.org/specs/
http://www.pcisig.com/
http://www.usb.org
http://www.teleport.com/~acpi/
Chapter 1. Introduction
Chapter 1 introduces the ICH3 and provides information on datasheet organization.
Chapter 2. Signal Description
Chapter 2 provides a detailed description of each ICH3 signal. Signals are arranged according to
interface and details are provided as to the drive characteristics (Input/Output, Open Drain, etc.) of
all signals.
Chapter 3. ICH3 Power Planes and Pin States
Chapter 3 provides a complete list of signals, their associated power well, their logic level in each
suspend state, and their logic level before and after reset.
Chapter 4. ICH3 and System Clock Domains
Chapter 4 provides a list of each clock domain associated with the ICH3 in an ICH3 based system.
Chapter 5. Functional Description
Chapter 5 provides a detailed description of the functions in the ICH3. All PCI buses, devices and
functions in this datasheet are abbreviated using the following nomenclature;
Bus:Device:Function. This datasheet abbreviates buses as B0 and B1, devices as D8, D29, D30 and
D31 and functions as F0, F1, F2, F3, F4, F5, and F6. For example, Device 31 Function 5 is
abbreviated as D31:F5, Bus 1 Device 8 Function 0 is abbreviated as B1:D8:F0. Generally, the bus
number will not be used, and can be considered to be Bus 0. Note that the ICH3’s external PCI bus
is typically Bus 1, but may be assigned a different number depending upon system configuration.
Chapter 6. Register, Memory and I/O Address Maps
Chapter 7 provides an overview of the registers, fixed I/O ranges, variable I/O ranges and memory
ranges decoded by the ICH3.
Intel^® 82801CA ICH3-S Datasheet
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