LS700 (Atlanta) Motherboard

Motherboard Components

A	Optional chassis security connector	M	Floppy drive connector
B	Optional 'Wake on LAN' connector	N	IDE connectors
C	Battery	O	Front panel connector
D	Optional Line In connector	P	Accelerated Graphics Port (AGP) connector
E	Optional CD-ROM audio connector	Q	Configuration jumper block
F	Optional telephony connector	R	Optional SCSI hard disk LED connector
G	Back-panel I/O connectors	S	'Wake on Ring' connector
H	Slot 1 connector	T	Speaker
I	Fan 3 header connector	U	Fan 2 connector
J	DIMM sockets	V	PCI connectors
K	Primary power connector	W	ISA connectors
L	Fan 1 connector

Back Panel I/O Connectors

A	PS/2 connector (mouse or keyboard)	F	Serial port 1 connector
B	Parallel port connector	G	Serial port 2 connector
C	MIDI/game port connector	H	Audio line out jack
D	PS/2 connector (mouse or keyboard)	I	Audio line in jack
E	USB connectors	J	Audio mic in jack

RAM Configuration

You can install from 8MB to 384MB of memory in the motherboard DIMM sockets. There are three DIMM sockets arranged as banks 0, 1, and 2. The motherboard supports the following memory features:

• 168-pin 3.3V DIMMs with gold plated contacts
• 66MHz unbuffered SDRAM
• Non-ECC (64-bit) or ECC (72-bit) memory
• 8MB, 16MB, 32MB, 64MB, and 128MB modules

When adding memory, follow these guidelines:

• You can install DIMMs of any size in any of the three banks.
• The BIOS detects the size and type of installed memory.
• For ECC operation, all installed memory must be ECC (72-bit) and you must enable the ECC Configuration feature in the Setup program.

SDRAM memory expansion for LS700 (Atlanta) Systems
16MB 64-bit DIMM Module	XB61385
32MB 64-bit DIMM Module	XB61386
64MB 64-bit DIMM Module	XB61387
128MB 64-bit DIMM Module	XB61388

Disk Drives

Hard Disk Drives
MB	Make	Model	Type	Part Number
3.2GB	Quantum	ST3240A	IDE	SU61671
4.3GB	Quantum	ST4320A	IDE	SU62667
Floppy Drive
MB	Make	Model	Type	Part Number
2 MB	Teac	FD-235HG	3.5"	16259831
CD-ROM
Speed	Make	Model	Type	Part Number
24	Sony	CDU621-10	IDE	XB62488

Jumper Settings

Note that with this motherboard the setting of the processor clock speed and clearing of passwords is carried out by software and not by hardware jumper settings, via a Maintenance menu in Setup.

To enable this mode of Setup, a Configuration Jumper Block (J8B2) is set as explained below. The diagram shows the location of the Configuration Jumper Block on the motherboard. The jumper is set to normal mode at the factory.

The following table shows the jumper settings for the different Setup modes. These modes configure Setup for normal operations, maintenance operations, or recovering the BIOS.

Function	Jumper J8B2	Description
Normal	1-2	BIOS uses current configuration and passwords for booting.
Configure	2-3	After the POST runs, Setup starts and displays the Maintenance menu. This menu displays options for setting the processor speed and clearing passwords.
Recovery	None	BIOS recovers data from a recovery diskette.

Motherboard Connections

The connection details for these connectors are shown in the following tables.

Chassis Security Connector (J2B1)

Pin	Signal Name
2	Ground
3	CHS_SEC

Wake on LAN Connector (J1C1)

Pin	Signal Name
1	+5 VSB
2	Ground
3	WOL

ATAPI CD-ROM Audio Connector (J1F1)

Pin	Signal Name
1	CD_IN-Left
2	Ground
3	Ground
4	CD_IN-Right

ATAPI-Style Telephony Connector (J2F1)

Pin	Signal Name
1	Audio Out (monaural)
2	Ground
3	Ground
4	Audio In (monaural)

ATAPI-Style Line In Connector (J2F2)

Pin	Signal Name
1	Left Line In
2	Ground
3	Ground
4	Right Line In (monaural)

Fan 3 Connector (J5L1) (Active Heatsink Fan)

Pin	Signal Name
1	Ground
2	+12V
3	Ground

Fan 1 Connector (J8M1)

Pin	Signal Name
1	Ground
2	FAN_CTRL (+12 V)
3	FAN_SEN*

* If the optional management extension hardware is not available, pin 3 is ground.

SCSI Hard Drive LED Input Connector (J8B1)

Pin	Signal Name
1	DRV_ACT#
2	No connect

Wake on Ring Connector (J8A1)

Pin	Signal Name
1	Ground
2	RINGA

Fan 2 Connector (J3F1)

Pin	Signal Name
1	Ground
2	FAN_CTRL (+12 V)
3	FAN_SEN*

* If the optional management extension hardware is not available, pin 3 is ground.

Audio Subsystem

The onboard audio subsystem is based on the Yamaha OPL family of single-chip audio controllers (YM 715). The audio subsystem provides the digital audio and analog mixing functions needed for recording and playing sound on personal computers. The subsystem features:

• Line and microphone level inputs
• MIDI/Game port
• 3-D enhanced stereo
• Full digital control of all mixer and volume control functions
• Full duplex operation
• Sound Blaster Pro, Windows Sound System, Roland MPU-401, AdLib, and Multimedia PC Level 2 (MPCII) compatibility
• Onboard Yamaha YM 704 wavetable synthesizer (optional)
• Wavetable upgrade connector
• CD-ROM audio connector
• Telephony connectors

 

Hardware Monitor Option

The hardware monitor option features the following:

• An integrated temperature sensor
• Fan speed sensors
• Power supply voltage monitor
• POST test result and error code storage
• Support for Intel LANDeskÒ Client Manager
• Connector for external chassis security feature

These features are implemented by an integrated hardware monitor device.

 

Front Panel Connections

The motherboard has connectors for controls and indicators typically located on the front panel of the computer. A jumper on pins 26/27 connects the on-board speaker.

Rear Panel

A	Power supply fan vent holes.
B	Socket for AC power cord.
C	Add-in card slots.
D	Typical motherboard I/O connectors. See the motherboard section for further information.
E	Input voltage selection switch

CMOS

Replacing the configuration battery

A battery on the motherboard keeps the clock and values in CMOS RAM current when you computer is turned off. The battery should last about seven years. When the battery begins to die, it loses voltage; when the voltage drops below a certain level, the Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one.

Warning
The CMOS battery is a lithium type. Do not use a metal tool to remove the battery. An accidental short circuit may cause the battery to explode. Dispose of the battery according to the battery manufacturer's recommendations.

To replace the battery

1. Turn off all peripheral devices connected to the computer.
2. Turn off the computer and unplug all power cords.
3. Take suitable anti-static precautions and remove the computer top and access covers.
4. With your fingers, gently prise the battery free from its socket. Note the "+" and "-" orientation of the battery.
5. Install the new battery in the socket, orienting the "+" and "-" correctly.
6. Replace the computer covers.

Motherboard Resources

Memory Map

I/O Map

PCI Configuration Space Map

DMA Channels

Interrupts

 

Memory Map

I/O Map

*  Only by DWORD accesses.
** Only by Byte accesses.

PCI Configuration Space Map

DMA Channels

Interrupts

1 Default, but can be changed to another IRQ

 

Beep Codes

The computer uses special audio beep codes to signal certain hardware faults.

One long beep followed by several short beeps indicates a video problem. There may be no display on the screen.