VTech PA48, i915 Technical Reference Booklet

1

Electronic Emission Notices

Federal Communications Commission (FCC) Statement

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with instructions contained in this manual, may cause harmful interference
to radio and television communications. However, there is no guarantee that interference
will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:

- REORIENT OR RELOCATE THE RECEIVING ANTENNA

- INCREASE THE SEPARATION BETWEEN THE EQUIPMENT AND THE RECEIVER

- CONNECT THE EQUIPMENT INTO AN OUTLET ON A CIRCUIT DIFFERENT FROM
THAT OF THE RECEIVER

- CONSULT THE DEALER OR AN EXPERIENCED AUDIO/TELEVISION TECHNICIAN

NOTE: Connecting this device to peripheral devices that do not comply with Class B

requirements, or using an unshielded peripheral data cable, could also result in
harmful interference to radio or television reception.

The user is cautioned that any changes or modifications not expressly approved
by the party responsible for compliance could void the user’s authority to operate
this equipment.

To ensure that the use of this product does not contribute to interference, it is
necessary to use shielded I/O cables.

Copyright

This manual is copyrighted with all rights reserved. No portion of this manual may be
copied or reproduced by any means.

While every precaution has been taken in the preparation of this manual, no responsibility
for errors or omissions is assumed. Neither is any liability assumed for damages resulting
from the use of the information contained herein.

Trademarks

All brand names, logos and registered trademarks mentioned are property of their
respective owners.

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Technical Reference Booklet

Table of Contents

HARDWARE CONFIGURATION ....................................................... 4

Key Features .................................................................................................. 4

MOTHERBOARD LAYOUT ................................................................ 7

REAR PANEL .................................................................................... 8

AUDIO CONFIGURATION ................................................................ 10

SPEAKER CONFIGURATION ............................................................ 10

Method 1: 4/6 Surround audio output of back panel only ...................... 10

Method 2: Using S-Bracket connectors ................................................. 12

JACK-SENSING INSTRUCTION ........................................................ 15

CONNECTORS ................................................................................. 18

Floppy Disk Drive Connector:CN3 ......................................................... 18

Hard Disk Connectors:CN1 .................................................................. 18

Back Panel Bracket-Six Channel Audio Output Connector:CN7 ......... 19

Fan Power Connectors: CPUFAN/SYSFAN .......................................... 21

AUX-IN Connector:AUX1 ........................................................................ 22

CD-IN Connector:CDS1 ........................................................................ 22

Serial ATA Hard Disk Connectors:SATA1/SATA2/SATA3/SATA4 ............. 23

Front Panel Audio Header:FP-S1 .......................................................... 25

IEEE 1394 Connector:CN9 .................................................................... 26

USB Connectors:FP-U1/FP-U2 ............................................................. 28

Front Panel Header:FP1 ........................................................................ 29

JUMPER SETTING ............................................................................... 3 0

JP1 - CMOS Clear .................................................................................. 30

Keyboard Power Select Jumper: JP5 .................................................... 30

CPU Frequency Jumper: JP2/JP21 ....................................................... 30

3

SLOTS .............................................................................................. 3 1

CPU INSTALLATION ........................................................................ 3 2

INSTALL DDR DIMMs ...................................................................... 35

MEMORY CONFIGURATIONS .......................................................... 36

Single Channel Mode ............................................................................ 36

Dual Channel Mode ............................................................................... 37

BIOS SETUP ..................................................................................... 38

Starting Setup ........................................................................................ 38

Main Menu .............................................................................................. 39

Standard CMOS Features ..................................................................... 40

Advanced BIOS Features ....................................................................... 41

Advanced Chipset Features .................................................................. 41

Integrated Peripherals ........................................................................... 41

Power Management Setup .................................................................... 41

PNP/PCI Configurations ........................................................................ 41

PC Health Status ................................................................................... 41

Frequency/Voltage Control..................................................................... 41

Set Supervisor/User Password ............................................................. 42

Flash Update Procedure ....................................................................... 43

APPENDIX ....................................................................................... 44

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Technical Reference Booklet

HARDWARE CONFIGURATION

Key Features :

Chipset

• Intel® 915G/915P/915GV/910GL Chipset.

Processor

• Supports Intel® Pentium® 4, Northwood and Prescott processors in
the 478-pin package (with 0.8V~1.6V voltage)

• Supports 64-bit PSB (Processor System Bus) frequency of 533MHz
(133MHz bus clock)

• Supports 64-bit PSB (Processor System Bus) frequency of 800MHz
(200MHz bus clock) (only for 915G/GV/P)

• Supports Hyper-Threading Technology.

VRM 10.1 (Voltage Regulator Modules) on Board

• Flexible motherboard design with on board VRD 10.1, easy to upgrade
with future Intel® Pentium® 4 processors.

• The Intel Pentium® 4 Processors built-in L2 Cache.

System Memory

• A total of two 184pin DDR SDRAM sockets.

• DIMM size from 64 Mbytes to 2Gbyte.

• Support Dual Channel 128-bit Wide Memory Interface

• Support DDR 333/400 DDR SDRAM memory type.

• 2.5V DRAM interface for DDR SDRAM.

System BIOS

• PnP, APM, ATAPI for Windows®2000/XP.

• Full support of ACPI & DMI.

• Auto detects and supports LBA harddisks with capacities over 160GB.

• Easy to upgrade BIOS by end-user.

On-board AC97 Sound (optional)

• Integrated AC97 controller with standard AC97 Codec.

• Direct Sound and Sound Blaster compatible.

• Full-Duplex 16-bit record and play back.

• PnP and APM 1.2 support.

• Windows®2000/XP drivers ready.

• Line-in, Line-out, Mic-in .

• Supports ALC650/655 AC97 Code for six sound channel output
(optional).

• ALC655 supports SPK-out, MIC-in, LINE-in, jack sensing.

5

Hardware Configuration

Plug-and-Play

• Supports Plug and Play specification 1.1.

• Plug and Play for Windows®2000 as well as Windows®XP.

• Fully steerable PCI interrupts.

On-board I/O

• On board one PCI fast IDE ports supporting up to 2 ATA, ATA2 , Ultra
ATA33/66/100 IDE HDDs, CD-ROMs, ZIP drives and LS-120 drives
as boot drive.

• Support Bus Master IDE, Read transfers up to 100MB/s, Writes to
89MB/s.

• One ECP/EPP parallel port.

• One 16550 Compatible UART serial port (Two serial ports for 915P).

• One floppy port supports two FDD of 360KB, 720KB, 1.2MB , 1.44MB

and 2.88MB capacity.

• Eight USB ports.

• PS/2 keyboard connector.

• PS/2 mouse is supported.

• One Front Panel Sound Connector.

• Infrared (IrDA) is supported via a header.

On-board Realtek RT8100C LAN (optional)

• Integrated 10/100 transceiver.

• Supports Full Duplex flow control(IEEE802.3x)

• Fully compliant with IEEE802.3, IEEE802.3u, IEEE802.3ab.

• Supports Wake-On-LAN function and remote wake-up.

• Transmit/Receive FIFO (8K/64K) support.

On-board VGA (only for 915G/GV/910GL)

• Core Frequency of 333MHz.

• 3D Setup Render Engine.

• High Quality Texture Engine.

• 3D Graphics Rasterization Enhancements.

• Full 2D H/W Acceleration.

• Motion Video Acceleration.

• Up to 2048x1536 in 8 bit Color at 85Hz Refresh.

• H/W Motion Compensation Assistance for S/W MPEG2 Decode.

• Software DVD at 30fps.

• Integrated 24-bit 350MHz RAMDAC.

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Technical Reference Booklet

Static electricity can harm delicate components of the motherboard.
To prevent damage caused by static electricity, discharge the static
electricity from your body before you touch any of the computers
electronic components.

PCI Express Graphics interface

• One 16-lane(X16 port) PCI Express port intended for Graphics Attach,
Fully compliant to the PCI Express Base Specification revision 1.0a.

• A base PCI Express frequency of 2.5GB/s only.

• PCI Express supports and Enhanced Addressing Mechanism.

• ADD2 card utilizes PCI Express Graphics x16 connector.

PCI ExpressX1 Ports

• Full PCI Express 1.0a compliant.

• Two virtual channel support for full isochronous data transfers.

• Supports for full 2.5GB/s bandwidth in each direction per X1 lane.

Expanded USB Support

• Includes 4 UHCI host controllers,increasing the number of external
ports to eight.

• Includes 1 EHCI USB2.0 Host Controller that supports all eight ports
(Bandwidth shared between eight ports).

Power Management

• Supports SMM, APM and ACPI.

• Break switch for instant suspend/resume on system operations.

• Energy star “Green PC” compliant.

• Hardware monitoring circuit is supported, provide voltage,
temperature, fan speed, etc. monitoring (optional).

• Supports suspend-to-RAM(STR) (optional).

• External Modem Ring-in Wake-up support.

On board IEEE1394 OHCI Link Controller(optional)

• Compliant with 1394 open HCI specifications v1.0 and v1.1.

• Integrated 400Mbit 2 ports PHY.

Integrated Serial ATA host Controller

• Independent DMA operation on four ports.

• Data transfer rates of 150Mb/s.

• RAID feature support (optional).

Expansion Slots

• 1 PCI Express X16 slot.

• 1 PCI Express X1 slots.

• 2 PCI bus master slots - ver. 2.1 compliant.

7

Motherboard Layout

The following diagrams show the relative positions of the jumpers,

connectors, major components and memory banks on the motherboard.

NOTE

1) Be sure to check the cable orientation in order to match the colored strip to
the pin1 end of the connector.

2) When you start up the system, please wait for 5 seconds after you power
on AC.

3) It is not recommended to add a metal spacer plate on the back of the
Socket478. Otherwise, some components will be short and damaged.

# The LAN, CN7&Video out connectors are optional.
# The ALC650/655 embeds an internal analog switch (by driver software) to
share LINE input with Surround output, and share MIC input with CENTER/LFE
output.

Motherboard layout

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Technical Reference Booklet

PIN SIGNAL DESCRIPTION

1 VCC +5V/5VSB (optional)
2 -Data 0 Negative Data Channel 0
3 +Data0 Positive Data Channel 0
4 GND Ground
5 VCC +5V/5VSB (optional)
6 -Data 1 Negative Data Channel 1
7 +Data 1 Positive Data Channel 1
8 GND Ground

Rear Panel

The back panel provides the following connectors:

Mouse Connector

The mainboard provides a standard PS/2

®

mouse mini DIN connector for

attaching a PS/2

®

mouse.You can plug a PS/2® mouse directly into this

connector.

Keyboard Connector

The mainboard provides a standard PS/2

®

keyboard mini DIN connector

for attaching a PS/2

®

keyboard.You can plug a PS/2® keyboard directly into

this connector.

USB 2.0 Connector

The mainboard provides a UHCI (Universal Host Controller Interface)

Universal Serial Bus root for attaching USB devices such as keyboard, mouse
or other USB-compatible devices.You can plug the USB device directly into
the connector.

USB 2.0 Connector DescriptionUSB 2.0 Connector

9

VIA VT6307 IEEE 1394 Connector (Optional)

The mainboard provides a IEEE 1394 Connector and allows you to

connect a IEEE 1394 device directly to the connector.

Serial Port Connector: COM1

The Port is 16550A high speed communication ports that send/receive

16bytes FIFOs. You can attach a serial mouse or other serial devices directly
to the connectors.

Video Out Connector (Optional)

The mainboard provides a Video out port to connect a 15-pin analog

video monitor.

LAN Jack (Optional)

The mainboard provides one standard RJ-45 jack for connection to Local

Area Network(LAN).You can connect a network cable to the LAN jack.

Parallel Port Connector:LPT

The mainboard provides a 25-pin female centronic connector as LPT. A

parallel port is a standard printer port that supports Enhanced Parallel Port
(EPP) and Extended Capabilities Parallel Port (ECP) mode.

Audio Port Connector

Line-out is a connector for Speakers or Headphones. Line In is used for

external CD player, Tape player, or other audio devices. Mic In is a connector
for microphones. The ALC650/655 embeds an internal analog switch (by driver
software) to share LINE input with Surround output, and share MIC input with
CENTER/LFE output.

The ALC655 embeds the jack sensing function.When you plug an audio
device into the corresponding connector, the system will show you what you
pluged into the motherboard.

Rear Panel

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Technical Reference Booklet

Audio Configuration

After installing the audio driver, you can select 4/6 channel surround
audio output in software utility and then connect surround speakers to
appropriate audio ports.

There are two ways to obtain 4/6 channel surround audio output:

1. 4/6 surround audio output of back panel only. All surround speaker

connect to audio connector.

2. S-Bracket (optional cable). You have installed S-Bracket into the

computer, and then connect two front speakers to back panel’s

“Line-out” port, and the rest of speakers to S-Bracket. Detail connection

is refer to Page 20.

Speaker Configuration

Method 1: 4/6 Surround audio output of back panel only.

After installing the audio drivers, you can attach the speakers for 2-/4-/6­channel audio output. Always connect the speakers to the LINE OUT
connectors. Different connector configurations for 2-/4-/6-channel
operations are listed below:

2-Channel

4-Channel 6-Channel

In 2-channel configuration,
Line Out, Line In and MIC
functions all exist.

When set to 4-channel
configuration, Line In
is replaced by Rear
Speaker Out. Line in
function does not exist.

When set to 6-channel
configuration, Line In
is replaced by Rear
Speaker Out. Mic is
replaced by Center/
Subwoofer Speaker Out.
Line in and Mic do not
exist function.

11

Software Configuration

In utility, double click “AC97 Audio configuration” icon from the
window tray on the right bottom.

Then the “AC97 Audio Configuration” will appear. Click on the Speaker
Configuration tab to select the audio mode.

A. When you choose 4-channel mode for 4 speaker output, the selected item
is showed as below (Figure1)

(Figure1)

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Technical Reference Booklet

B. When you choose 6-channel mode for 5.1 speaker output, the selected
item is showed as below (Figure2)

Method 2: Using S-BRACKET connectors:

S-Bracket (The S-Bracket is showed in page 20) is an optional accessory.
It gives access to analog and digital audio output by integrating both SPDIF
and analog LINE OUT connectors. To use the S-Bracket, you should select
correct setting in the software utility. For information about the setting, refer to
selecting 4- or 6- Channel Setting later in the section.

Connector configurations for 4- and 6- channel using S-Bracket are
described below:

(Figure2)

13

Back Panel

S-Bracket

(Front channels)

4-Channel Analog Audio Output

Description:

Connect two speakers to back panel’s Line Out connector and two
speakers to one Line Out connector of S-Bracket, or four speaker to
connector of S-Bracket. If you want to use Line In function, please click
the Rear Speaker Out button (showed as below)

Using S-Bracket Connector

1

23

+

1

2

3

SPDIF jack (coaxial)

Rear Speaker Out

No function

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Technical Reference Booklet

Back Panel

S-Bracket

(Front channels)

6-Channel Analog Audio Output

Description:

Connect two speakers to back panel’s Line Out connector and four
speakers to both Line Out connectors of S-Bracket, If you want to use

Line In and MIC function at the same time, please click the Rear
Speaker Out and Center/Subwoofer Speaker Out buttons. (showed as

below)

1

23

+

1

2

3

SPDIF jack (coaxial)

Rear Speaker Out

Center and Subwoofer Out