IBT Technologies IB791 User manual

IB791
VIA CLE266 5.25”Embedded Board
USER’S MANUAL
Version 1.0

ii IB791 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.

IB791 User’s Manual iii
Table of Contents
Introduction....................................................... 1
Product Description.......................................................... 1
Specifications................................................................... 2
Board Dimensions............................................................ 3
Installations....................................................... 5
Installing the Memory (DDR DIMM)............................... 6
Setting the Jumpers .......................................................... 7
Connectors on IB791...................................................... 11
BIOS Setup...................................................... 25
Drivers Installation...................................... 47
Appendix........................................................... 55
A. I/O Port Address Map................................................ 55
B. Interrupt Request Lines (IRQ).................................... 56
C. 57Watchdog Timer Configuration.............................. 57
D. Digital I/O Sample Code............................................ 60

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INTRODUCTION
IB791 User’s Manual 1
Introduction
Product Description
IB791 is a high-performance flexible embedded board based on the VIA
CLE 266 chipset. The chipset is based on an innovative and scaleable
architecture with proven reliability. It is a two-chip set consisting of the
VT8623 North Bridge Controller and VT8237 South Bridge Controller.
IB791 supports the Socket 370 processors with speeds of up to 1.4GHz
and with front side bus of up to 133MHz. One 184-pin DDR DIMM
sockets supports can accommodate a total memory size of 1GB.
Combining a fully integrated video processing feature set, Integrated
UniChrome™ 2D/3D graphics engine and ultra efficient VIA DDR
memory controller, the VIA Unichrome™ CLE266 Chipset is designed
to enable high quality digital video streaming and DVD playback in a
new generation of small form factor PCs and IA devices. Shared
memory capacity is up to 64MB.
One 10/100Mbps Ethernet onboard is supported by the Realtek 8100C
single chip Ethernet controller or it can replaced with an optional
RTL8110s-32 Gigabit LAN.
With dimensions of 270mm by 160mm, IB791 has other features and
connectors such CF card socket, PC/104 Plus and PCI connectors, two
IDE channels, and four USB 1.1/2.0 compliant ports. Advanced features
include digital I/O, watchdog timer and serial ATA support.

INTRODUCTION
2IB791 User’s Manual
Specifications
Form Factor Little Board
CPU Type Socket 370 (Intel PIII / Celeron)
CPU Voltage 1.1V~1.85V
System Speed 533MHz~1.4GHz
CPU External Clock 66/100/133Mhz
Green /APM APM1.2
CPU Socket Socket 370
Chipset VIA CLE266
North bridge: VT8623 (2D/3D) (CLE266)BGA 548 pin
South bridge: VT8237 BGA 539 pin
BIOS Award BIOS, 2Mbit,support ACPI function
Cache CPU integrated
Memory
One 184-pin DDR DIMM socket supports,
Supports DDR200/266 DIMM Max.1GB
VGA VT8623 integrated AGP 4X VGA controller, share
memory 16/32/64MB frame buffer
MPEG-2 Hardware Slice layer, IDCT & Motion Compensation
LCD interface Support 24Bit TTL LCD interface, LVDS interface for
ID320
LAN Controller Realtek RTL8100C (10/100Mb) or RTL8110s-32
Gigabit LAN
Sound VT8237 built-in sound controller + AC97 Codec
ALC655 (5.1 channels), (Line-out, Line-in, Mic)
PCI Slot 1 (support 2 bus master)
PC104+ 1 (PCI only, 32-bit)
CF Card Type II
LPC I/O Winbond 83697HF: Parallel x1, COM1, COM2, FDC
2.88MB (3 Mode support), Hardware monitor (2
thermal inputs, 8 voltage monitor inputs, VID0-4, 1
chassis open detection, 2 fan headers)
Secondary LPC I/O Winbond 83697HF support COM3, COM4
Uart/16550A(6 Port) COM1/3/4:RS232
COM2: RS232/422/485
RTC/CMOS VT8237 built-in
Battery Lithium battery
Keyboard / Mouse VT8237 built-in
Parallel IDE VT8237 built-in, IDE1, 2 (Ultra DMA 33/66/100/133)
Serial ATA Dual Channel Serial ATA, support RAID 0, 1, JBOD
USB Supports 1.1/2.0 USB 4 ports
Digital I/O 4 In/Out (TTL level)
Watchdog Timer 256 levels
Dimensions 203mm X146mm

INTRODUCTION
IB791 User’s Manual 3
Board Dimensions

INTRODUCTION
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INSTA
LLATIONS
IB791 User’s Manual 5
Installations
This section provides information on how to use the jumpers and
connectors on the IB791 in order to set up a workable system. The topics
covered are:
Installing the Memory (DDR DIMM)............................... 6
Setting the Jumpers .......................................................... 7
Connectors on IB791...................................................... 11

INSTALLATIONS
6IB791 User’s Manual
Installing the Memory (DDR DIMM)
The IB791 board supports one 184-pin DDR DIMM socket for a
maximum total memory of 1GB in DDR DRAM type. The memory
module capacities supported are 64MB, 128MB, 256MB, 512MB and
1GB.
Installing and Removing DIMMs
To install the DDR DIMM, locate the memory slot on the board and
perform the following steps:
1. Hold the DIMM so that the two keys of the DIMM align with those on
the memory slot.
2. Gently push the DIMM in an upright position until the clips of the slot
close to hold the DIMM in place when the DIMM touches the bottom
of the slot.
3. To remove the DDR module, press the clips with both hands.
Top View of DIMM Socket
DDR Module
Lock
Lock
Lock
Lock

INSTA
LLATIONS
IB791 User’s Manual 7
Setting the Jumpers
Jumpers are used on IB791 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 IB791 and their respective functions.
Jumper Locations on IB791.......................................................... 8
JP1: AT / ATX Power Select ........................................................ 9
JP2: Clear CMOS Content............................................................ 9
JP4, JP5, JP6: RS232/RS422/RS485 (COM2) Selection................ 9
JP3: COM3/4 RS232 +5V / +12V Power Setting ........................ 10
JP7: CF Connector Slave/Master Selection ................................. 10
JP8: LCD Panel Power Selection ................................................ 10
JP1 on ID320: LCD Panel Power Selection................................. 10

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8IB791 User’s Manual
Jumper Locations on IB791
Jumperson IB791...................................................................Page
JP1: AT / ATX Power Select........................................................ 9
JP2: Clear CMOS Content............................................................ 9
JP4, JP5, JP6: RS232/RS422/RS485 (COM2) Selection................ 9
JP3: COM3/4 RS232 +5V / +12V Power Setting.........................10
JP7: CF Connector Slave/Master Selection ..................................10
JP8: LCD Panel Power Selection.................................................10
JP1 on ID320: LCD Panel Power Selection..................................10

INSTA
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IB791 User’s Manual 9
JP1: AT /ATX Power Select
JP1 Setting Power Supply
Pin 1-2
Short/Closed AT
Pin 2-3
Short/Closed
ATX
JP2: Clear CMOS Content
JP2Setting Function
Pin 1-2
Short/Closed Normal Operation
Pin 2-3
Short/Closed Clear CMOS Content
JP4, JP5, JP6: RS232/RS422/RS485 (COM2) Selection
JP4, JP5, JP6Pin Short Function
JP4: 1-2
JP5: 3-5, 4-6
JP6: 3-5, 4-6RS232
JP4: 3-4
JP5: 1-3, 2-4
JP6: 1-3, 2-4RS422
JP4: 5-6
JP5: 1-3, 2-4
JP6: 1-3, 2-4RS485

INSTALLATIONS
10 IB791 User’s Manual
JP3: COM3/4 RS232 +5V / +12V Power Setting
Pin # Signal Name JP3Signal Name Pin #
1+5V +5V 2
3Pin 9 (COM1) Pin 9 (COM2) 4
5+12V +12V 6
COM3Settings: Pin 1-3 short = +5V, Pin 3-5 short = +12V
COM4Settings: Pin 2-4 short = +5V, Pin 4-6 short = +12V
JP7: CF Connector Slave/Master Selection
JP7 Setting Setting
Open Slave
Short/Closed Master
JP8: LCD Panel Power Selection
JP8 Setting Voltage
Pin 1-2
Short/Closed 3.3V
Pin 2-3
Short/Closed
5V
JP1 on ID320:LCD Panel Power Selection
JP1 Setting Power
Pin 1-2
Short/Closed 3.3V
Pin 2-3
Short/Closed
5V

INSTA
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IB791 User’s Manual 11
Connectors on IB791
The connectors on IB791 allows you to connect external devices such as
keyboard, floppy disk drives, hard disk drives, printers, etc. The
following table lists the connectors on IB791 and their respective
functions.
Connector Locations on IB791 ................................................... 12
CN1, CN2: Serial ATA (SATA) Connectors............................... 13
FAN1, FAN2: CPU and System Fan Power Connectors.............. 13
FAN3: ATX Power Connector.................................................... 13
IDE1, IDE2: EIDE Connectors................................................... 13
FDD1: Floppy Drive Connector.................................................. 14
P2: AT Power Supply Connector ................................................ 15
J2: Digital I/O Connector (4 in, 4 out)......................................... 15
FAN2: System Fan Power Connector.......................................... 15
CN3: Compact Flash Card Type II Connector............................. 15
J3: PC/104 Plus Connector ......................................................... 16
J4: PS/2 Keyboard Selection....................................................... 17
J5: IrDA Connector .................................................................... 17
J6: PS/2 Keyboard and Mouse Connector ................................... 17
J7: Serial Ports........................................................................... 18
J9, J11: USB Connectors............................................................ 18
J10: System Function Connector................................................. 19
J12: Parallel Port Connector ....................................................... 20
J13: External Audio Connector................................................... 21
J14: CD-In Audio Connector...................................................... 22
J18: VGA CRT Connector.......................................................... 22
J20: Gigabit LAN Connector (used with ID330) ......................... 22
J21: AT Power Supply Connector............................................... 22
J1 on ID320: LVDS Connector(18-bit) ....................................... 23
J4 on ID320: TTL Connector...................................................... 23
FPD RGB Mapping Table .......................................................... 24

INSTALLATIONS
12 IB791 User’s Manual
Connector Locations on IB791
Connectorson IB791..................................................................................................Page
CN1, CN2: Serial ATA (SATA) Connectors...............................................................13
FAN1, FAN2: CPU and System Fan Power Connectors.............................................13
FAN3: ATX Power Connector......................................................................................13
IDE1, IDE2: EIDE Connectors.....................................................................................13
FDD1: Floppy Drive Connector....................................................................................14
P2: AT Power Supply Connector..................................................................................15
J2: Digital I/O Connector (4 in, 4 out)..........................................................................15
FAN2: System Fan Power Connector...........................................................................15
CN3: Compact Flash Card Type II Connector.............................................................15
J3: PC/104 Plus Connector ............................................................................................16
J4: PS/2 Keyboard Selection .........................................................................................17
J5: IrDA Connector........................................................................................................17
J6: PS/2 Keyboard and Mouse Connector....................................................................17
J7: Serial Ports................................................................................................................18
J9, J11: USB Connectors...............................................................................................18
J10: System Function Connector...................................................................................19
J12: Parallel Port Connector..........................................................................................20
J13: External Audio Connector .....................................................................................21
J14: CD-In Audio Connector.........................................................................................22
J18: VGA CRT Connector.............................................................................................22
J20: Gigabit LAN Connector (used with ID330).........................................................22
J21: AT Power Supply Connector.................................................................................22
J1 on ID320: LVDS Connector(18-bit) ........................................................................23
J4 on ID320: TTL Connector ........................................................................................23

INSTA
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IB791 User’s Manual 13
CN1, CN2: Serial ATA (SATA) Connectors
The SATA connectors support serial ATA 150. Each connector can only
use one serial ATA hard disk. CN1 is port 1 and CN2 is port 2.
FAN1, FAN2: CPU and System Fan Power Connectors
Pin # Signal Name
1Ground
2+12V
3Rotation detection
FAN3: ATX Power Connector
Pin # Signal Name
1Ground
2PS_On
35VSB
IDE1, IDE2: EIDE Connectors
IDE1: Primary IDE Connector
Signal Name Pin # Pin # Signal Name
Reset IDE 12Ground
Host data 7 34Host data 8
Host data 6 56Host data 9
Host data 5 78Host data 10
Host data 4 910 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
Activity 39 40 Ground

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IDE2: Secondary IDE Connector
Signal Name Pin # Pin # Signal Name
Reset IDE 12Ground
Host data 7 34Host data 8
Host data 6 56Host data 9
Host data 5 78Host data 10
Host data 4 910 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
Vcc 41 42 Vcc
Ground 43 44 N.C.
FDD1: Floppy Drive Connector
Signal Name Pin # Pin # Signal Name
5V/Ground 12RM/LC
5V/Ground 34No connect
5V/Ground 56No connect
Ground 78Index
Ground 910 Motor enable 0
Ground 11 12 Drive select 1
Ground 13 14 Drive select 0
Ground 15 16 Motor enable 1
Ground 17 18 Direction
Ground 19 20 Step
Ground 21 22 Write data
Ground 23 24 Write gate
Ground 25 26 Track 00
Ground 27 28 Write protect
Ground 29 30 Read data
Ground 31 32 Side 1 select
Ground 33 34 Diskette change

INSTA
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IB791 User’s Manual 15
P2:AT Power Supply Connector
Pin # Signal Name
1+12V
2Ground
3Ground
4+Vcc
J2:Digital I/O Connector (4 in, 4 out)
This 12-pin Digital I/O connector supports TTL levels and is used to
control external devices requiring ON/OFF circuitry.
Signal Name
Pin # Pin # Signal Name
In0 17+5V
In1 28Out0
In2 39Ground
In3 410 Out1
Ground 511 +12V
Out2 612 Out3
FAN2: System Fan Power Connector
FAN2 is a 3-pin header for the system fan. The fan must be a 12V fan.
Pin # Signal Name
1Ground
2+12V
3Rotation detection
CN3: Compact Flash Card Type II Connector
The onboard CF card connector, by default, shares the IDE2 slave
channel. JP7, a 2-pin header, can be used to configure it as slave (pin
open) or master (pin closed).

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16 IB791 User’s Manual
J3: PC/104 Plus Connector
PC/104-Plus Bus Signal Assignments
J3/P3
Pin ABCD
1GND/5.0V KEY² Reserved +5 AD00
2VI/O AD02 AD01 +5V
3AD05 GND AD04 AD03
4C/BE0* AD07 GND AD06
5GND AD09 AD08 GND
6AD11 VI/O AD10 M66EN
7AD14 AD13 GND AD12
8+3.3V C/BE1* AD15 +3.3V
9SERR* GND SB0* PAR
10 GND PERR* +3.3V SDONE
11 STOP* +3.3V LOCK* GND
12 +3.3V TRDY* GND DEVSEL*
13 FRAME* GND IRDY* +3.3V
14 GND AD16 +3.3V C/BE2*
15 AD18 +3.3V AD17 GND
16 AD21 AD20 GND AD19
17 +3.3V AD23 AD22 +3.3V
18 IDSEL0 GND IDSEL1 IDSEL2
19 AD24 C/BE3* VI/O IDSEL3
20 GND AD26 AD25 GND
21 AD29 +5V AD28 AD27
22 +5V AD30 GND AD31
23 REQ0* GND REQ1* VI/O
24 GND REQ2* +5V GNT0*
25 GNT1* VI/O GNT2* GND
26 +5V CLK0 GND CLK1
27 CLK2 +5V CLK3 GND
28 GND INTD* +5V RST*
29 +12V INTA* INTB* INTC*
30 -12V Reserved Reserved GND/3.3V
KEY²
* The shaded area denotes power or ground signals.
* The KEY pins are to guarantee proper module installation. Pin-A1 will
be removed and the female side plugged for 5.0V I/O signals and
Pin-D30 will be modified in the same manner for 3.3V I/O. It is
recommended that both KEY pins (A1 and D30) be electrically
connnected for GND for shielding.