Spectra MB720 User manual

MB720
VIA CN333/ CN400
Mini ITX Motherboard
USER’S MANUAL
Version 1.0

ii MB720 User’s Manual
Acknowledgments
Award is a registered trademark of Award Software International,
Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Microsoft Windows is a registered trademark of Microsoft
Corporation.
Winbond is a registered trademark of Winbond Electronics
Corporation.
All other product names or trademarks are properties of their
respective owners.

MB720 User’s Manual iii
Table of Contents
Introduction .......................................................1
Product Description............................................................. 1
Checklist..............................................................................2
Specifications ......................................................................3
Board Dimensions ...............................................................4
Installations .......................................................5
Installing the Memory .........................................................6
Setting the Jumpers .............................................................7
Connectors on MB720 ...................................................... 11
Watchdog Timer Configuration ........................................21
Digital I/O Sample Code ................................................... 24
BIOS Setup.......................................................27
Drivers Installation ......................................49
VIA CN400 Chipset Driver Installation............................50
Realtek AC’97 Codec Audio Driver Installation .............. 53
Realtek LAN Driver Installation .......................................54
VIA RAID Driver Installation...........................................55
VIA USB 2.0 Driver Installation.......................................57
VIA CN400 VGA Driver Installation ...............................58
Appendix ...........................................................59
A. I/O Port Address Map................................................... 59
B. Interrupt Request Lines (IRQ)...................................... 60

iv MB720 User’s Manual
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INTRODUCTION
MB720 User’s Manual 1
Introduction
Product Description
The MB720 Mini ITX board incorporates the VIA CN333/CN400
chipset. Currently, the board is available in two models, namely:
1. MB720 - VIA C3 800MHz, CN333 chipset, Mini-ITX w/ 10/100
LAN, VGA, Mini PCI, SATA
2. VIA Eden 1GHz, CN400 chipset, Mini-ITX w/ 10/100 LAN, Gigabit
LAN, VGA, Mini PCI, SATA, 1394, TV
Optional for the MB720/MB720F is the ID380 daughter card that
supports 18/24-bit LVDS.
Basically, the MB720 has the following features:
• VIA CN333/ CN400 Chipset with VIA CPU
• Up to 1GHz speed and 1GB DDR memory
• Integrated VGA, support 24-bit LVDS LCD
• 10/100 LAN1 on board, 10/100 or Gigabit LAN for
LAN2
• 2 x 1394, 6 x USB, 2 x SATA ports
• 4 COM ports, Watchdog timer
• TV Out, PCI and Mini PCI slots on board

INTRODUCTION
2MB720 User’s Manual
Checklist
Your MB720 package should include the items listed below.
• The MB720 Mini ITX board
• This User’s Manual
• 1 CD containing chipset drivers and flash memory utility
• Accompanying cables such as:
• 1 COM Port Cable
• 2 IDE Ribbon Cables (40-pin & 44-pin)
• 1 Serial ATA Cable
• 1 Slim FDD Cable (for MB720F only)
• 1 1394/Firewire Cable (for MB720F only)
• I/O Shield
Remarks: Optional is the USB2K-4 USB 2.0 cable.

INTRODUCTION
MB720 User’s Manual 3
Specifications
Product Name MB720
Form Factor Mini ITX (170mm x 170mm)
CPU Type VIA EDEN EBGA / C3 EBGA
CPU Voltage 1.05V ~ 1.20V
CPU Frequency / FSB 300MHz ~ 1.0GHz w/ FSB 100/133/200MHz
Green / APM APM1.2
Chipset VIA CN400/8237 chipset
North bridge: CN400 681-pin HSBGA
South bridge: VT8237 539-pin PBGA
BIOS Award BIOS supports ACPI function
Cache 128K/256K (CPU integrated)
VGA VIA CN400 built-in 128-bit Unichrome Pro 3D/2D controlle
r
Supports 16/32/64 MB frame buffer size
LCD (TTL) 24-bit TTL LCD interface
LAN Via built-in 10/100 LAN MAC + VT6103 PHY
Realtek RTL8100C (10/100) LAN controller x1 co-layout w/
RTL8110S-32 Gigabit LAN controller
1394 VIA VT6307 1394 controller for two ports
Memory Type One DDR DIMM socket, supports up to 1GB
DDR200/266/333/400
USB 6 ports, USB Version 2.0
Serial ATA 2 ports, support RAID 0, 1
IDE Interface Two channels; support Ultra DMA 33/66/100/133
Sound VIA VT8237 built-in Sound controller + AC97 Codec ALC
655
5.1 Channel (Line-out, Line-in & Mic.)
LPC I/O Winbond W83697HF: Parallel port x1, COM1, COM2
(RS-232), FDC 1.44MB, IrDA, hardware monitor
Secondary I/O Fintek F81216D for COM3, 4 (RS-232)
RTC/CMOS VIA VT8237 built-in RTC with on board Lithium Battery
KB/Mouse Supports PS/2 Keyboard/Mouse
Expansion Slots PCI slot x 1 (supports 2 bus masters) and Mini-PCI x 1
Edge Connectors PS/2 KB & MS, VGA CRT, COM1, LPT, RJ45 + dual USB,
RJ45 x1 for LAN 2, TV-Out, Audio (SPKR, Line-In & MIC)
On Board Connector /
Header
Serial ATA connector x 2
40 pins box-header x 1 (IDE1)
44 pins box-header x 1 (IDE2)
44 pins pin-header x 1 for TTL LCD interface
30 pins pin-header x 1 for COM2, 3 & 4
12 pins pin-header x 1 for audio
8 pins pin-header x 2 for USB x 4
12 pins pin-header x 1 for 1394 x 2
26 pins slim type header x 1 for Floppy
5 pins pin-header x 1 for IrDA
20 pins pin-header for power switch, reset, speaker, etc.
Power Connector ATX power connector
Watchdog Timer Yes (256 segments: 0, 1, 2,..., 255 sec/min)
Dimensions 170mm x 170mm

INTRODUCTION
4MB720 User’s Manual
Board Dimensions

INSTALLATIONS
MB720 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the MB720 in order to set up a workable system. The
topics covered are:
Installing the Memory.................................................................. 6
Setting the Jumpers ...................................................................... 7
Connectors on MB720 ............................................................... 11
Watchdog Timer Configuration................................................. 21
Digital I/O Sample Code............................................................ 24

INSTALLATIONS
6MB720 User’s Manual
Installing the Memory
The MB720 embedded board supports one DDR memory sockets for a
maximum total memory of 1GB in DDR memory type. The memory
module capacities supported are 128MB, 256MB, 512MB and 1GB. The
following table lists the supported DDR DIMM configurations.
Installing and Removing Memory Modules
To install the DDR modules, locate the memory slot on the embedded
board and perform the following steps:
1. Hold the DDR module so that the key of the DDR module aligns with
those on the memory slot.
2. Gently push the DDR module in an upright position until the clips of
the slot close to hold the DDR module in place when the DDR module
touches the bottom of the slot.
3. To remove the DDR module, press the clips with both hands.
DDR Module Lock
Lock
Lock Lock

INSTALLATIONS
MB720 User’s Manual 7
Setting the Jumpers
Jumpers are used on MB720 to select various settings and features
according to your needs and applications. Contact your supplier if you
have doubts about the best configuration for your needs. The following
lists the connectors on MB720 and their respective functions.
Jumper Locations on MB720 ......................................................... 8
Configuring the CPU Frequency (for A1 version only)................. 9
JBAT1: Clear CMOS Contents ...................................................... 9
JP1: COM3 RS232 +5V / +12V Power Setting ............................. 9
JP2: COM4 RS232 +5V / +12V Power Setting ............................. 9

INSTALLATIONS
8MB720 User’s Manual
Jumper Locations on MB720
Jumpers on MB720................................................................... Page
JBAT1: Clear CMOS Contents....................................................... 9
JP1: COM3 RS232 +5V / +12V Power Setting.............................. 9
JP2: COM4 RS232 +5V / +12V Power Setting.............................. 9

INSTALLATIONS
MB720 User’s Manual 9
Configuring the CPU Frequency (for A1 version only)
The MB720 A1 version supports FSB manual adjustment, but this
feature will be removed in the B1 version.
FSB 1 2 3 4
100MHz ON ON OF
F
OF
F
133MHz OF
F
ON OF
F
OF
F
166MHz OF
F
OF
F
OF
F
OF
F
200MHz ON OF
F
OF
F
OF
F
JBAT1: Clear CMOS Contents
Use JBAT1 to clear the CMOS contents. Note: Disconnect the
ATX-power connector from the board before clearing CMOS.
JBAT1 Setting Function
Pin 1-2
Short/Closed Normal
Pin 2-3
Short/Closed Clear CMOS
JP1: COM3 RS232 +5V / +12V Power Setting
Pin # Signal Name JP1 Signal Name Pin #
1 RI +12V 2
3 RI (Default) RI (Default) 4
5 RI +5V 6
COM3 Settings: Pin 1-2 short = +12V, Pin 5-6 short = +5V, Pin 3-4
Standard COM Port
JP2: COM4 RS232 +5V / +12V Power Setting
Pin # Signal Name JP2 Signal Name Pin #
1 RI +12V 2
3 RI (Default) RI (Default) 4
5 RI +5V 6

INSTALLATIONS
10 MB720 User’s Manual
COM4 Settings: Pin 1-2 short = +12V, Pin 6-5 short = +5V, Pin 3-4
Standard COM Port

INSTALLATIONS
MB720 User’s Manual 11
Connectors on MB720
The connectors on MB720 allows you to connect external devices such
as keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on MB720 and their respective
functions.
Connector Locations on MB720 .................................................. 12
FDD1: Floppy Drive Connector................................................... 13
IDE1, IDE2: Secondary and Primary IDE Connectors ................ 13
FAN1: System Fan Power Connector .......................................... 14
FAN2: CPU Fan Power Connector .............................................. 14
CN1: ATX Power Supply Connector........................................... 15
CN2, CN3: Serial ATA (SATA) Connectors ............................... 15
CN4: Mini PCI Connector............................................................ 15
CN5: Parallel Port Connector....................................................... 15
CN6: RJ45 and 2 USB Ports ........................................................ 16
CN7: Line Out, Line In, Mic Connector ...................................... 16
CN8: COM1 Serial Port ............................................................... 16
CN9: RJ45 Connector for LAN1 (10/100)................................... 16
CN10, J12: TV out Connector (RCA Jack/CN10 and 3-pin
Header/J12) .................................................................................. 16
CN11: VGA CRT connector ........................................................ 17
J1: System Function Connector.................................................... 17
J2: LVDS Panel Interface (used with ID380 Card, not in A1
version)......................................................................................... 19
J3, J4: USB Connector (USB3/USB4, USB5/USB6)................... 19
J7: IrDA Connector ...................................................................... 19
J8: Digital 4-in 4-out I/O Connector ............................................ 19
J10: CD-In Audio Connector ....................................................... 20
J11: Serial Ports............................................................................ 20
PS2-KBMS1: PS/2 Keyboard and Mouse Connectors................. 20

INSTALLATIONS
12 MB720 User’s Manual
Connector Locations on MB720
Connectors on MB720..............................................................................................................Page
FDD1: Floppy Drive Connector...................................................................................................13
IDE1, IDE2: Secondary and Primary IDE Connectors ................................................................13
FAN1: System Fan Power Connector ..........................................................................................14
FAN2: CPU Fan Power Connector ..............................................................................................14
CN1: ATX Power Supply Connector...........................................................................................15
CN2, CN3: Serial ATA (SATA) Connectors...............................................................................15
CN4: Mini PCI Connector............................................................................................................15
CN5: Parallel Port Connector.......................................................................................................15
CN6: RJ45 and 2 USB Ports ........................................................................................................16
CN7: Line Out, Line In, Mic Connector ......................................................................................16
CN8: COM1 Serial Port ...............................................................................................................16
CN9: RJ45 Connector for LAN1 (10/100)...................................................................................16
CN10, J12: TV out Connector (RCA Jack/CN10 and 3-pin Header/J12)...................................16
CN11: VGA CRT connector ........................................................................................................17
J1: System Function Connector....................................................................................................17
J2: LVDS Panel Interface (used with ID380 Card, not in A1 version) .......................................19
J3, J4: USB Connector (USB3/USB4, USB5/USB6) ..................................................................19
J7: IrDA Connector ......................................................................................................................19
J8: Digital 4-in 4-out I/O Connector ............................................................................................19
J10: CD-In Audio Connector .......................................................................................................20
J11: Serial Ports ............................................................................................................................20
PS2-KBMS1: PS/2 Keyboard and Mouse Connectors ................................................................20

INSTALLATIONS
MB720 User’s Manual 13
FDD1: Floppy Drive Connector
FDD1is a slim 26-pin connector and will support up to 2.88MB FDD.
Signal Name Pin # Pin # Signal Name
VCC 1 2 INDEX
VCC 3 4 DRV_SEL
VCC 5 6 DSK_CH
NC 7 8 NC
NC 9 10 MOTOR
DINST 11 12 DIR
NC 13 14 STEP
GND 15 16 WDATA
GND 17 18 WGATE
GND 19 20 TRACK
NC 21 22 WPROT
GND 23 24 RDATA
GND 25 26 SIDE
IDE1, IDE2: Secondary and Primary IDE Connectors
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Key
DRQ0 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 29 30 Ground
IRQ14 31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
Activity 39 40 Ground
IDE1: 2nd IDE
Vcc 41 42 Vcc
Ground 43 44 N.C.

INSTALLATIONS
14 MB720 User’s Manual
IDE2: Primary IDE Connector
Signal Name Pin # Pin # Signal Name
Reset IDE 1 2 Ground
Host data 7 3 4 Host data 8
Host data 6 5 6 Host data 9
Host data 5 7 8 Host data 10
Host data 4 9 10 Host data 11
Host data 3 11 12 Host data 12
Host data 2 13 14 Host data 13
Host data 1 15 16 Host data 14
Host data 0 17 18 Host data 15
Ground 19 20 Protect pin
DRQ0 21 22 Ground
Host IOW 23 24 Ground
Host IOR 25 26 Ground
IOCHRDY 27 28 Host ALE
DACK0 29 30 Ground
IRQ14 31 32 No connect
Address 1 33 34 No connect
Address 0 35 36 Address 2
Chip select 0 37 38 Chip select 1
IDE2: 1st IDE
Activity 39 40 Ground
FAN1: System Fan Power Connector
This is a 3-pin header for system fans. The fan must be a 12V (500mA)
fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection
FAN2: CPU Fan Power Connector
FAN2 is a 3-pin header for the CPU fan. The fan must be a 12V fan.
Pin # Signal Name
1 Ground
2 +12V
3 Rotation detection

INSTALLATIONS
MB720 User’s Manual 15
CN1: ATX Power Supply Connector
Signal Name Pin # Pin # Signal Name
3.3V 11 1 3.3V
-12V 12 2 3.3V
Ground 13 3 Ground
PS-ON 14 4 +5V
Ground 15 5 Ground
Ground 16 6 +5V
Ground 17 7 Ground
-5V 18 8 Power good
+5V 19 9 5VSB
+5V 20 10 +12V
11 1
20 10
CN2, CN3: Serial ATA (SATA) Connectors
The SATA connectors support serial ATA 150. Each connector can only
use one serial ATA hard disk. CN2 is port 1 and CN3 is port 2. These
connectors are located beside the PCI slot.
CN4: Mini PCI Connector
CN5: Parallel Port Connector
Signal Name Pin # Pin # Signal Name
Line printer strobe 1 14 AutoFeed
PD0, parallel data 0 2 15 Error
PD1, parallel data 1 3 16 Initialize
PD2, parallel data 2 4 17 Select
PD3, parallel data 3 5 18 Ground
PD4, parallel data 4 6 19 Ground
PD5, parallel data 5 7 20 Ground
PD6, parallel data 6 8 21 Ground
PD7, parallel data 7 9 22 Ground
ACK, acknowledge 10 23 Ground
Busy 11 24 Ground
Paper empty 12 25 Ground
Select 13 N/A N/A

INSTALLATIONS
16 MB720 User’s Manual
CN6: RJ45 and 2 USB Ports
CN6 is a stacked connector with RJ45 on top and 2 USB ports at the
bottom.
CN7: Line Out, Line In, Mic Connector
CN8: COM1 Serial Port
CN8 (COM1) is a DB-9 connector serial port.
Signal Name Pin # Pin # Signal Name
DCD, Data carrier detect 1 6 DSR, Data set ready
RXD, Receive data 2 7 RTS, Request to send
TXD, Transmit data 3 8 CTS, Clear to send
DTR, Data terminal ready 4 9 RI, Ring indicator
GND, ground 5 10 Not Used
CN9: RJ45 Connector for LAN1 (10/100)
CN10, J12: TV out Connector (RCA Jack/CN10 and 3-pin
Header/J12)
Pin # Signal Name
1 Y
2 Ground
3 C