Page 1
TriGem 440EX Micro ATX
Motherboard (Como3)
Table of Contents
I. Introduction
1. Generation Description ---------------------------------------------------------- 2
2. Function Block Diagram -------------------------------------------------------- 4
II. System Overview
1. Major Units ------------------------------------------------------------------------ 5
2. Upgradeability ---------------------------------------------------------------------- 5
2-1. Processor ----------------------------------------------------------------------- 5
2-2. Memory ------------------------------------------------------------------------- 6
2-3. Expansion Slot ----------------------------------------------------------------- 6
2-4. I/O Interface -------------------------------------------------------------------- 7
2-5. Manufacturing Options --------------------------------------------------------- 7
III. Jumper & Connector Description
1. Motherboard Jumper Setting ------------------------------------------------------- 8
1-1. Selection for Pentium II processor CPU Clock ------------------------ 8
1-2. Other function control ------------------------------------------------------- 8
2. Motherboard Header Connector -------------------------------------------------- 9
3. Motherboard Internal I/O Connector --------------------------------------------- 13
Page 2
I. Introduction
1. Generation Description
The Como3 Micro ATX motherboard delivers the excellent functionality, the cost effective performance.
This board is designed to support Intel Pentium II processor with MMX media enhancement technology, and to
provide the high performance, component level interconnect targeted 3D graphical display application (A.G.P)
and Intel’s OPSD manageability for the office environment. Special controller is built in the board to support
ACPI function fully, however it will be the optional feature according to the market segment.
T Small PCB size in the Micro ATX form factor
• 243mm * 223mm * 1.6t (4 Layers)
• Cost-effective PCB size
T
Intel Celeron processor 266/300MHz
• Single Edge Contact Cartridge design not include a dedicated L2 cache
• Slot 1 connector
T 2 DIMM banks for EDO/SDRAM module
• 3.3V EDO/SDRAM supported (168pin unbuffered DIMM)
• Supports up to 256MB (128MB * 2 banks)
T
High performance targeted 3D graphical display.
• Built-in AGP graphic controller (ATI RAGE IIC)
• SGRAM 2Mbyte Video Memory on Board(32bit operation)
T
Intel 440EX core and FDC37M602 Super I/O controller
• High performance core chip with two BGA package
T
Built-in high performance 3D ISA audio CODEC
• Built-in ISA audio CODEC (CS4235B)
T
Support Intel’s OPSD manageability level-3
• Remote wake up solution : LAN(option) and Modem
• FAN control logic : CPU Fan, system Fan(option)
• System chassis intrusion(option)
• System voltage and temperature management(option)
Management Levels
Level-1 ECC on memory, DMTF compliant software
Level-2 Alert generation in system temperature, voltage, FAN speed, chassis intrusion
Level-3 Remote wake up over LAN, service boot
Level-4 Resume to task, improved power management, OS independent management
FAN off
T
2 ISA, 2 PCI slots and 1 shared slot
• Master operating function on all PCI slot
T
Variable I/O interface
• Two USB port (One in front panel, the other in rear port) : Keyboard, Mouse, CCD Camera
• Two PS/2 port : Keyboard, Mouse
• Two Serial port : COM1 port and optional COM2 port by Header Connector
• One Parallel port : DB25, LPT1
• One Audio/Joystick port : 1 Speaker, 1MIC_IN, 1 LINE_IN, 1 MIDI/Joystick port(front panel)
• One FDD connector : 34-pin, boxing type
2
Page 3
• Two E-IDE connector : 40-pin, boxing type, primary and secondary interface
• One power connector : 20-pin, standard ATX power connector module
• One power connector : 6-pin, 1394 power connector(option)
• One AMC connector : 38-pin, ATI AMC interface
3
Page 4
2. Function Block Diagram
5
HD
Celeron Processor
SGRAM
HA
DIMM Module
USB(front)
USB(rear)
COM1
Harddisk
LAN card
DD
DA
Wake up
(option)
Wake up
Modem card
SMBus
MD
MA
Intel
LM78
SD
SA
Intel
AD
PAC
Intrusio
FAN
GMD
GAD
ATI
ATI Rage IIc
I2C-BUS
Crystal
CS4235
Video Conn
PCI slot
Joystic
(front)
SPK
MIC
LPT
Mouse
Keyboard
FDD
I/O
SMC37M602
Line In
XD
ISA slot
Flash ROM
4
Page 5
II. System Overview
1. Major Unit
Core Chipsets Vendor Functional description Package Remarks
82443EX Intel PCIset AGP controller BGA-492pin SL2SA
82371EB
PIIX4E
FDC37M602 ITE Super I/O Chipset PQFP-100pin A
ICS9148-08 ICS System Clock Chip SSOP-48pin
SC1164 SEMTECH DC to DC Converter SOP-24pin
CS4235 Crystal ISA Sound Controller QFP-100pin JQ(Rev.C)
3D RAGE IIC ATI AGP Graphic Controller BGA-256pin 215R2BUA21
LM79CCVF NSC Management Extension Hardware PQFP-44pin J
For more information, refer to the data sheet.
2. Upgradeability
This section describes the major specification of user upgradeable part. CPU, Memory, and Extension slot
will provide the user to leverage the overall performance by adding or changing these part with other
higher.
Intel PCI to ISA /IDE Xcelerator BGA-324pin SL2MY
T
CPU : CELERON processor-266/300MHz
T
Memory : EDO, SDRAM (2 Banks, 16MB - 256MB)
T
Expansion slot : 2 master PCI, 2 ISA, and 1 shared slot
2-1 Processor
This motherboard supports a single Celeron processor. The processor’s VID pin automatically program
the voltage regulator on the motherboard to the required processor voltage. The motherboard supports
processors that run internally at 266/300MHz.
T
Packing
• Single Edge Contact ( S.E.C.) cartridge - processor core, second level cache, thermal plate..
• Retention mechanism attached to the motherboard.
5
Page 6
2-2. Memory
The memory controller, Intel 440EX support EDO module, and SDRAM module, up to two banks,
however EDO and SDRAM module will be available with 168-pin unbuffered DIMM module and 3.3V
version. The BIOS automatically detects memory type, size, and speed.
The motherboard supports the following memory features.
• 168-pin DIMMs with gold-plated contacts
• 66MHz SDRAM only
• Non-ECC(64-bit) memory
• 3.3 V Memory only
• Single- or double-sided DIMMs in the following sizes
DIMM Size Non-ECC Configuration
8 MB 1 Mbit * 64
16 MB 2 Mbit * 64
32 MB 4 Mbit * 64
64 MB 8 Mbit * 64
128 MB 16 Mbit * 64
168-pin DIMM module Notch Key Definitions
DRAM key position Voltage key position
(buffered or unbuffered) (3.3V or 5V)
To function properly, SDRAM DIMMs must meet the Intel 4-clock, 66MHz unbuffered
SDRAM specification for either 64-bit SDRAM.
2-3. Expansion Slot
This Micro ATX has two ISA expansion slots and two PCI expansion slot, but total three add-on cards
could be available together due to one shared slot. Also all PCI slot can support the master device on it
with PnP function.
Interrupt and IDSEL assignment of PCI slots
PCI slot IDSEL
CN12 (PCI-1) AD30 A B C D
CN13 (PCI-2) AD29 B C D A
INTA INTB INTC INTD
Interrupt mapping
Remarks
6
Page 7
2-4. I/O Interface
This Micro ATX motherboard has one serial port, one parallel port, two PS/2 port for keyboard and mouse,
and two USB port, Audio & MIDI/Joystick to upgrade the external peripheral devices, such as mouse,
modem, printer, scanner, etc.
Mouse USB Parallel PCI PCI ISA ISA
Keyboard COM1 Video SPK Line-In MIC
USB Joystick
2-5. Manufacturing Options
This Micro ATX motherboard has the several manufacturing options according to the type of the
motherboard. The following features are implemented based on the customer requirement.
• Hardware monitoring function : LM78/79 functionality
• FAN control function : MIC29204 functionality
• Power Supply FAN control : 6pin connector or 3pin connector
.
3. LED
3-1. Power LED
Normal State
Suspend State
Off State
Green
Green LED is blinking
LED is off
3-2. HDD LED
Amber colored LED is on whenever HDD is being accessed
LED1(HDD LED : Amber)
CN1(LED board interface connector)
SW1(Power on/off switch with LED : Green)
7
Page 8
III. Jumper and Connector Descriptions
1. Motherboard Jumper Setting
J11
J13
1-1. Selection for Processor CPU Clock (J13)
CPU Clock J13-1 J13-2 J13-3 J13-4
233MHz ON OFF OFF ON
266MHz OFF ON ON ON
*300MHz OFF ON OFF ON
333MHz OFF OFF ON ON
1-2. Other function control
Switch Functionality ON OFF
J13-5 CMOS RAM Clear CMOS RAM
J13-6 Password Disable
J13-7 CMOS Setup Disable
J13-8 FDD Write Protect Write Protect
Jumper Set to 1-2 Set to 2-3
J11 Disable built-in AGP
* : Default Setting
*Enable built-in AGP
*Normal
*Enable
*Enable
*Normal
8
Page 9
2. Motherboard Header Connector
CN70 CN46
CN44
CN43
CN45
CN23
CON1,
CN71
SPK1
CN56 CN50 CN53 CN54 CN51 CN49 CN48 CN52 CN8(CN55)
2-1. System FAN Connector(CN53:option)
Pin Number Signal Name
1 Ground
2 FANCNTL
3 FANSEN1
2-2. CPU FAN Connector(CN54)
Pin Number Signal Name
1 Ground
2 FANCNTL
3 FANSEN2
2-3. LAN Wake-up Connector(CN50:option)
Pin Number Signal Name
1+5VSB
2 Ground
3 LAN_WAKE
9
Page 10
2-4. Modem Ring Wake-up Connector(CN51)
Pin Number Signal Name
1 #RING_A or #RING_B
2 Ground
3+5VSB
2-5. CD-ROM Sound Connector(CN43, CN44)
Pin Number Signal Name(ATAPI,CN43) Signal Name(Mitsumi,CN44)
1 CD_IN_LEFT CD_IN_GND
2 CD_IN_GND CD_IN_RIGHT
3 CD_IN_GND CD_IN_GND
4 CD_IN_RIGHT CD_IN_LEFT
2-6. Modem Sound Connector(CN46,CN70)
Pin Number Signal Name(CN46) Signal Name(CN70)
1 MIC_MONO MONO_IN 2 GND GND 3 MONO_OUT GND 4 GND MIC_MONO 5 MONO_IN
2-7. Video Sound Connector(CN45)
Pin Number Signal Name(ATAPI,CN43)
1 TV_IN_LEFT
2 GND
3 GND
4 TV_IN_RIGHT
2-8 Chassis Open Detection Connector (CN52)
Pin Number Signal Name
1 GND
2CH_IN
2-9. PC_PCI Header Connector(CN23)
Pin Number Signal Name
1 -PCGNTA
2 GND
3N.C
4 -PCREQA
5 GND
6SER_IRQ
2-10. Speaker (SPK1)
Pin Number Signal Name
1VCC
2 SPKR
2-11. BATTERY (CN56)
Pin Number Signal Name
1 Battery VCC
2 GND
10
Page 11
2-12. Front Internal Connector(CN48)
22 4 3 2 1
Function Pin NO. Signal Name Function Pin NO. Signal Name
1 VCC 11 IRRX
Power LED
2 -STPCLK 12 GND
3 GND 13 IRTX
4 N .C 14 VCC
5 VCC 15 IR_SELHDD LED
IrDA
Header
6 -IDEACT 16 N.C
7N.C
17 GND
8 -SOFT_SW 18 N.CDC_SW
9 GND 19 VCC
10 N.C 20 GND
Speaker
21 N.C
22 SPKR
2.13 Front Internal Connector(CN49)
16 15 4 3 2 1
Function Pin No. Signal Name Function Pin No. Signal Name
1 N.C 9 N.CKEYLOCK
2 GND 10 N.C
LANLED
3N.C 11 N.C
S/W
4 -FP_RST
5 GND 13 N.C
6N.C 14 N.C
SM_BUS
12 N.CRESET
7 -EXTSMI 15 N.CSLEEP
8 GND
16 N.C
2.14 Power FAN Connector (CN8 or CN55)
Pin Number
Signal Name
CN8 CN55
1 N.C GND
2 FAN_CNTR FAN_CNTR
3N.CN.C
4N.C
5N.C
6N.C
11
Page 12
2-15. Joystick, USB Header Connector(CON1, CN71)
9 10
1
11 12 13 14 15 16
2 3 4 5 6 7 8 1 2
CON1 CN71
Pin Number Signal Name
1VCC
2JAB1
3JACX
4 GND
5 GND
6JACY
7JAB2
8VCC
9VCC
10 -JBB1
11 -JBCX
12 MIDI_TXD
13 -JBCY
14 -JBB2
15 MIDI_RXD
16 Key pin(nc)
1 GND
2 Data -
3 Data +
4VCC
3 4
12
Page 13
3. Internal I/O Connector
CN13 CN12 CN32 CN1
CN17
CN18
CN3
CN4
CN25 CN39 CN31 CN26 CN24 CN27 CN29
CN11 CN10 CN9 CN7 CN8(CN55)
CN1 CN4
3-1 Mother Board I/O Connector
Location Name Location Name
CN1 Slot1 Connector CN17 ISA SLOT 1
CN3 DIMM0 CN18 ISA SLOT 2
CN4 DIMM1 CN24 COM1 Port
CN7 Micro ATX Power Conn. CN25 COM2 Header(option)
CN8(CN55) 1394 Power Connector(option) CN26 Parallel Port
CN9 FDD Connector CN27 USB Port
CN10 Primary IDE Connector CN29 PS2 KBD, Mouse
CN11 Secondary IDE Connector CN31 VGA Port
CN12 PCI SLOT 1 CN32 AMC Connector
CN13 PCI SLOT 2 CN39 Audio Connector
MIDI/Joystick(option)
3-2 Dot Board I/O Connector
Location Name Location Name
CN1 USB single Connector CN4 Joystick/MIDI Connector
13
Loading...