AMI BIOS is a trademark of American Megatrends Inc.
PS/2 is a trademark of International Business Machines
Corporation.
Intel and Atom are registered trademarks of Intel 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.
A. I/O Port Address Map .................................................. 45
B. Interrupt Request Lines (IRQ) ...................................... 48
C. Watchdog Timer Configuration ................................... 49
D. Digital I/O Sample Code ............................................. 54
MI890 User’s Manualiii
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iv
MI890 User’s Manual
Introduction
INSTALLATIONS
MI890 MINI ITX MOTHERBOARD
MI890 EDGE CONNECTORS
MI890 User’s Manual1
INSTALLATIONS
Checklist
Your MI890 package should include the items listed below.
The MI890 Intel® Atom Mini-ITX motherboard
This User’s Manual
1 CD containing chipset drivers and flash memory utility
Cables (IDE cable, Serial ATA cable)
Winbond NCT6627UD :
COM1 (RS232/422/485), COM2~COM4(RS232)
with pin-9 with power for 2 ports (500 mA for each port) [COM3/4]
Hardware monitor (2 thermal inputs, 4 voltage monitor inputs, VID0-4 &
1 x fan header)
Digital IO
4 in & 4 out
Expansion
Slots
Mini PCI-e x 1 w/USB for WiFi or TV-tuner module
(Reserved screw holes for half-mini type also)
PCI slot x 1 + PCI-Express(1x) slot x1
Edge
Connector
DC-Jack x 1
DB15 connector x1 for VGA
Dual DB9 Stack connector x 1 for COM1/ COM2
RJ45 + Dual USB stack connector x1 for LAN 1 + USB 1/2
RJ45 + Dual USB stack connector x1 for LAN 2 + USB 3/4
Audio 3-port connector x 1 (Line-out , Line-in& Mic)
On Board
Header/Conn
ector
2x4 pin header x2 for 4 USB ports
DF13 socket x 1 for LVDS( 18-bit single channel)
DF11 socket 20-pin connector x 1 for COM3, COM4
CF type II connector x1
SATA II connector x2
2x5 pin header x1 for Digital I/O
2x6 pin header x1 for front audio
4-pin header x2 for SATA power (Mini type)
Watchdog
Timer
Yes (256 segments, 0, 1, 2…255 sec/min)
Others
Optional EuP feature (Fintek F75160)
UL 60950-1 2nd Edition compatible
Power
Connector
12V ~ 24V DC-in
Board Size
170mm x 170mm
MI890 Specifications
INSTALLATIONS
MI890 User’s Manual3
INSTALLATIONS
Board Dimensions
4
MI890 User’s Manual
INSTALLATIONS
Installations
This section provides information on how to use the jumpers and
connectors on the MI890 in order to set up a workable system. The topics
covered are:
Setting the Jumpers .............................................................................. 6
Connectors on MI890 ........................................................................ 10
MI890 User’s Manual5
INSTALLATIONS
Setting the Jumpers
Jumpers are used on MI890 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 MI890 and their respective functions.
Jumper Locations on MI890 ................................................................ 7
JP1: LCD Panel Power Selection ......................................................... 8
JP12, JP14: ATX / AT Mode Select Setting ......................................... 9
JP15: EuP Control (option) .................................................................. 9
JP13: +3VS For ID381 ........................................................................ 9
JP16: +5VS For ID381 ........................................................................ 9
MI890 User’s Manual7
INSTALLATIONS
JP1
LCD Panel Power
3.3V
5V
COM1
Function
RS-232
RS-422
RS-485
Jumper
Setting
(pin closed)
JP5:
1-2
JP3:
3-5 & 4-6
JP4:
3-5 & 4-6
JP5:
3-4
JP3:
1-3 & 2-4
JP4:
1-3 & 2-4
JP5:
5-6
JP3:
1-3 & 2-4
JP4:
1-3 & 2-4
JP7/JP9
Setting
Function
Pin 1-2
Short/Closed
+12V
Pin 3-4
Short/Closed
RI
Pin 5-6
Short/Closed
+5V
JP11
Function
Normal
Clear CMOS
JP1: LCD Panel Power Selection
1.
JP3, JP4, JP5: RS232/422/485 (COM1) Selection
JP7, JP9: COM4 RS232 RI/+5V/+12V Power Setting
JP11: Clear CMOS Setting
8
MI890 User’s Manual
JP12 / JP14
Setting
Function
JP12 1-2, JP14 open
ATX Mode
JP12 2-3, JP14 short
AT Mode
JP15
Setting
Function
Pin 1-2
Short/Closed
Normal On
Default
Pin 2-3
Short/Closed
EuP Off
JP12, JP14: ATX / AT Mode Select Setting
JP15: EuP Control (option)
JP13: +3VS For ID381
JP16: +5VS For ID381
INSTALLATIONS
MI890 User’s Manual9
INSTALLATIONS
Connectors on MI890
The connectors on MI890 allows you to connect external devices such as
keyboard, floppy disk drives, hard disk drives, printers, etc. The following
table lists the connectors on MI890 and their respective functions.
Connector Locations on MI890 ......................................................... 11
J17: DC_IN Jack (+12V~24V) .......................................................... 12