System Overview

2.4.3 Support Components

Input/output functions not provided by the chipset are handled by other support components. Some of these components also provide “housekeeping” and various other functions as well. Table 2-5 shows the functions provided by the support components.

Table 2-5

Support Component Functions

Component Name

Function

 

 

SCH5317 I/O Controller

Keyboard and pointing device I/F

 

Diskette I/F

 

Serial I/F (COM1and COM2)

 

Parallel I/F (LPT1, LPT2, or LPT3)

 

PCI reset generation

 

Interrupt (IRQ) serializer

 

Power button and front panel LED logic

 

GPIO ports

 

Processor over tempurature monitoring

 

Fan control and monitoring

 

Power supply voltage monitoring

 

SMBus and Low Pin Count (LPC) bus I/F

 

 

Intel 82566DM Network Interface

10/100/1000 Fast Ethernet network interface controller.

Controller

 

 

 

ALC262 HD Audio Codec

Audio mixer

 

One digital-to-analog 2-channel converter

 

Two analog-to-digital 2-channel converters

 

Analog I/O

 

2-channel audio support

 

 

2.4.4 System Memory

✎

✎

These systems implement a dual-channel Double Data Rate (DDR2) memory architecture. All models support DDR2 800-, 667-, and 533-MHz DIMMs and ship with DDR2 800- or 667-MHz DIMMs.

DDR and DDR2 DIMMs are NOT interchangeable.

The USDT system provides three DIMM sockets supporting up to 3 GB of memory while all other form factors provide four DIMM sockets and support a total of four gigabytes of memory.

The maximum memory amounts stated above are with 1-GB memory modules using 1-Gb technology DIMMs.

 

Technical Reference Guide

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