AXIOMTEK AX12270 User Manual

AX12270

V4 PC/104 CPU Module

With CRT, LCD and Ethernet

User’s Manual

Disclaimers

This manual has been carefully checked and believed to contain
accurate information. AXIOMTEK Co., Ltd. assumes no responsibility
for any infringements of patents or any third party’s rights, and any
liability arising from such use.

AXIOMTEK does not warrant or assume any legal liability or
responsibility for the accuracy, completeness or usefulness of any
information in this document. AXIOMTEK does not make any
commitment to update the information in this manual.

AXIOMTEK reserves the right to change or revise this document
and/or product at any time without notice.

No part of this document may be reproduced, stored in a retrieval
system, or transmitted, in any form or by any means, electronic,
mechanical, photocopying, recording, or otherwise, without the prior
written permission of AXIOMTEK Co., Ltd.

CAUTION

If you replace wrong batteries, it causes the danger of explosion. It is
recommended by the manufacturer that you follow the manufacturer’s
instructions to only replace the same or equivalent type of battery,
and dispose of used ones.

©Copyright 2007 AXIOMTEK Co., Ltd.

All Rights Reserved.
August 2007, Version A2
Printed in Taiwan

ii

ESD Precautions

Computer boards have integrated circuits sensitive to static electricity.
To prevent chipsets from electrostatic discharge damage, please take
care of the following jobs with precautions:

 Do not remove boards or integrated circuits from their anti-static

packaging until you are ready to install them.

 Before holding the board or integrated circuit, touch an unpainted

portion of the system unit chassis for a few seconds. It
discharges static electricity from your body.

 Wear a wrist-grounding strap, available from most electronic

component stores, when handling boards and components.

Trademarks Acknowledgments

AXIOMTEK is a trademark of AXIOMTEK Co., Ltd.
Windows

Phoenix & AWARD are trademarks of Phoenix Technology Ltd.
IBM, PC/AT, PS/2, VGA are trademarks of International Business
Machines Corporation.
VIA is a trademark of VIA Technologies, Inc.

Intel
Winbond is a trademark of Winbond Electronics Corp.
Other brand names and trademarks are the properties and registered
brands of their respective owners.

®

is a trademark of Microsoft Corporation.

®

and Pentium® are trademarks of Intel Corporation.

iii

Table of Contents

Disclaimers........................................................................................ii

ESD Precautions..............................................................................iii

Chapter 1 Introduction........................................................................1

Specifications ...................................................................................2

Chapter 2 Jumpers and Connectors .................................................5

2.1 Board Layout........................................................................ 5

2.2 Placememt............................................................................ 7

2.3 Jumper Settings.................................................................... 9

2.3.1 LVDS Voltage Selection..............................................9

2.3.2 CMOS Clear Jumper................................................... 9

2.3.3 COM1 Mode Jumpers ...............................................10

2.4 Connectors ......................................................................... 11

2.4.1 LVDS Backlight Connector......................................... 12

2.4.2 LVDS Flat Panel Connector5 ....................................12

2.4.3 USB Connectors7......................................................13

2.4.4 VGA & PS/2 Connector.............................................14

2.4.5 Audio Connector........................................................14

2.4.6 Ethernet Connector ...................................................15

2.4.7 IDE Interface Connector............................................15

2.4.8 CPU Fan Connector..................................................16

2.4.9 Serial Port Interface Connector.................................17

2.4.10 Flat Panel Bezel Connector....................................... 18

2.4.11 PC/104 Bus Connector..............................................19

2.4.12 PC/104 Bus Connector..............................................20

2.4.13 PCI104 Bus................................................................20

2.4.14 DIO Connector...........................................................21

2.4.15 Power Connector 1....................................................22

2.4.16 Power Connector 2....................................................22

2.4.17 SMBUS Connector.................................................... 23

2.4.18 Battery Connector...................................................... 23

Chapter 3 Hardware Description...................................................... 25

3.1 Processor ...........................................................................25

3.2 CPU Bus Clock...................................................................25

3.3 BIOS...................................................................................25

3.4 System Memory.................................................................. 25

3.5 I/O Port Address Map......................................................... 26

3.6 Interrupt Controller..............................................................27

iv

Chapter 4 Award BIOS Utility...........................................................29

4.1 Entering Setup....................................................................29

4.2 Control Keys.......................................................................30

4.3 Getting Help........................................................................ 30

4.4 The Main Menu...................................................................31

4.5 Standard CMOS Setup Menu............................................. 32

4.6 Advanced BIOS Features................................................... 34

4.7 Advanced Chipset Features...............................................38

4.8 Integrated Peripherals........................................................41

4.9 Power Management Setup.................................................46

4.10 PnP/PCI Configuration Setup.............................................50

4.11 PC Health Status................................................................52

4.12 Frequency/Voltage Control.................................................53

4.13 Load Optimized Defaults....................................................54

4.14 Set Supervisor/User Password ..........................................54

4.15 Save & Exit Setup............................................................... 55

4.16 Exit Without Saving ............................................................55

Appendix A Watchdog Timer ...........................................................57

Appendix B Digital I/O.......................................................................61

v

MEMO

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AX12270 PC/104 Module Series User’s Manual

C h a p t e r 1

Introduction

The AX12270 is the powerful engine of PC/104 form factor CPU
Module. It comes with high-performance VIA V4 complaint processors,
maximum up to 15 watts support (both C7 & Eden up to 1.5GHz), and
high integration core logic controller VIA CX700 and ITE8888G PCI­to-ISA bridge that features Ultra Low Power V4 C7/Eden CPUs,
DualView with different content and resolution, USB DOM support as
SSD, and PC/104+ for both 16-bit ISA and 32-bit PCI expansion.
It is a PC/104 form factor board with support for one onboard system
memory DDR2 (up to 256MB), graphics UMA with maximum up to
64MB memory, and both CRT and LVDS (dual channel 24-bit) LCD. It
is equipped with four USB2.0 ports, one PATA IDE port, two serial
ports for RS-232 and RS-232/422/485, one P/S port for Keyboard/
Mouse, an interface for fast Ethernet, and a digital I/O.
The built-in Watchdog Timer has enhanced the system reliability that
achieves a unique feature to distinguish itself from other boards.

Introduction 1

AX12270 PC/104 Module Series User’s Manual

Specifications

z CPU: VIA V4 complaint C7 and Eden processors
z System Chipset

 Integrated chipsets VIA CX700 and ITE8888G

z System memory

 Onboard maximum DDR2 memory up to 256MB

z BIOS

 AWARD BIOS, Plug-and-Play 4Mbit Flash ROM with

integrated Ethernet Novell RPL and Windows PXE Boot
ROM functions

z SSD

 USB DiskOnModule and bootable

z Onboard IDE

 One channel supports up to two devices
 PIO Mode 0-4, DMA Mode 0-2

z Standard I/O

 Two serial ports, including one RS-232 and one RS-

232/422/485

 One PATA-133 IDE Interface
 One PS/2 Keyboard & Mouse Interface

z Ethernet

 Realtek 8139DL PCI Bus 10/100M Base-T

z Power Management

 Supports Plug & Play, APM(ACPI support)

2 Introduction

AX12270 PC/104 Module Series User’s Manual

z Watchdog Timer

 Generates a system reset
 Software programmable time interval
 255 levels, 0~255 seconds

z Graphics

 UMA with maximum up to 64MB memory
 Supports both CRT and LVDS LCD

z Expansion Interface

 PC/104 for 16-Bit ISA Bus Expansion
 PC/104 for 32-Bit PCI Bus Expansion

z Operating system

 Windows XP
 Windows XP Embedded
 Windows CE 5.0 & 6.0
 Embedded Linux

z Power supply voltage: +5 V (4.75 ~ 5.25 V)
z Power consumption

 Maximum: +5 V @ 3.32 A
 Typical: +5 V @ 1.6 A

z Operating temperature: 0 ~ 60° C (32 ~ 140° F)

 With Eden 400MHz is fanless
 With Eden 1GHz is fan required

NOTE: All specifications and images are subject to change

without notice.

Introduction 3

AX12270 PC/104 Module Series User’s Manual

MEMO

4 Introduction

AX12270 PC/104 Module Series User’s Manual

Jumpers and Connectors

2.1 Board Layout

C h a p t e r 2

Note: The Limited Height of Component side is 15 mm.

Jumpers and Connectors 5

Component Side

AX12270 PC/104 Module Series User’s Manual

Solder Side

Note: The Limited Height of Solder side: battery area is 6 mm,

and the other 4.83 mm.

6 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

2.2 Placememt

Jumpers and Connectors 7

Component Side

AX12270 PC/104 Module Series User’s Manual

8 Jumpers and Connectors

Solder Side

AX12270 PC/104 Module Series User’s Manual

2.3 Jumper Settings

Proper jumer settings configure the AX12270 to meet your application
purpose. We are herewith listing a summary table of all jumpers and
default settings for onboard devices, respectively.

Jumper Description Jumper Setting

JP1 LVDS Voltage Selection

Default: 3.3V

JP2 Normal Operation/Clear CMOS setting

Default: Normal Operation

CN10 COM1 Mode Select

Default: RS-232

CN11 COM1 Mode Select

Default: RS-232

2.3.1 LVDS Voltage Selection: JP1

This jumper is to select the voltage for LVDS interface.

Options Settings

3.3V Short 1-2 (default)
5V Short 2-3

Short 1-2

Short 1-2

Short 7-6

Short 1-2, 4-5,
7-8, 10-11

JP1

123

2.3.2 CMOS Clear Jumper: JP2

You may need to use this jumper to clear the CMOS memory if
incorrect settings in the Setup Utility.

Options Settings

Normal Short 1-2 (default)
Clear CMOS Short 2-3

JP2

3
2

1

Jumpers and Connectors 9

AX12270 PC/104 Module Series User’s Manual

2.3.3 COM1 Mode Jumpers: CN10.CN11

COM1 CN10 CN11

RS-232 (default) 7-6 1-2, 4-5, 7-8, 10-11
RS-422 1-2, 5-6 2-3, 5-6, 8-9, 11-12
RS-485 1-2, 3-4 2-3, 5-6, 8-9, 11-12

CN10

CN11

10 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

2.4 Connectors

Connectors connect the CPU card with other parts of the system.
Make sure all connectors are properly and firmly connected. Here is a
summary table shows you all connectors on the AX12270 Series.

Connectors Label

LAN Connector CN1
Serial Port1 Connector
Serial Port2 Connector
LCD Backlight Connector CN3
USB Port0 & Port1 Connector CN4
LCD Connector CN5
VGA/PS2 Connector CN6
USB Port2 & Port3 Connector CN7
Audio Connector CN8
IDE Connector CN9
COM1 Mode setting CN10
COM1 Mode setting CN11
PC104-B Slot CN12
PC104-A Slot CN13
PCI104 Slot CN14
Digital I/O Connector CN15
Front Panel Bezel Connector CN16
SMBUS Connector CN17
+12V & +5V Power Connector CN18
+5V Standby & PS on Connector CN19
CPU Fan Connector CN20
Battery Connector SBAT2

CN2

Jumpers and Connectors 11

AX12270 PC/104 Module Series User’s Manual

2.4.1 LVDS Backlight Connector: CN3

The 7-pin inverter connector on the SBC is a Hirose connector. It is
strongly recommended to use the matching connector Hirose DF13­7S-1.25C.

Pin Signal

1 12V
2 12V
3 5V
4 ENABLEI
5 GND
6 GND
7 GND

2.4.2 LVDS Flat Panel Connector: CN5

The LVDS connector on the SBC is a 40-pin connector. It is strongly
recommended to use the matching connector JST SHDR-40V-S-B.

Pin Signal Pin Signal

1 VCCM 2 VCCM
3 VCCM 4 VCCM
5 VCCM 6 VCCM
7 N.C. 8 N.C.

9 GND 10 GND
11 Channel B D3- 12 Channel B D0-
13 Channel B D3+ 14 Channel B D0+
15 GND 16 GND
17 Channel B CLK- 18 Channel B D1-
19 Channel B CLK+ 20 Channel B D1+
21 GND 22 GND
23 Channel A D0- 24 Channel B D2-
25 Channel A D0+ 26 Channel B D2+
27 GND 28 GND
29 Channel A D1- 30 Channel A D3-

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AX12270 PC/104 Module Series User’s Manual

Pin Signal Pin Signal

31 Channel A D1+ 32 Channel A D3+
33 GND 34 GND
35 Channel A D2- 36 Channel A CLK-
37 Channel A D2+ 38 Channel A CLK+
39 GND 40 GND
41 N.C. 38 N.C.
43 N.C. 40 N.C.

2.4.3 USB Connectors: CN4, CN7

The 10-pin standard Universal Serial Bus (USB) connectors CN4.CN7
are for installing peripheral devices supporting the USB interface.

CN4 for USB0 and USB1

Pin Signal Pin Signal

1 VCC 2 VCC
3 D0- 4 D1­5 D0+ 6 D1+
7 Ground (GND) 8 Ground (GND)
9 Ground (GND) 10 Ground (GND)

246

135

8

10

7

9

CN7 for USB2 and USB3

Pin Signal Pin Signal

1 VCC 2 VCC
3 D2- 4 D3­5 D2+ 6 D3+
7 Ground (GND) 8 Ground (GND)
9 Ground (GND) 10 Ground (GND)

246

135

8

10

7

9

Jumpers and Connectors 13

AX12270 PC/104 Module Series User’s Manual

2.4.4 VGA & PS/2 Connector: CN6

Conncector CN6 is for PS/2 Mouse/Keyboard and CRT VGA display
connection.

Pin Signal Pin Signal

1 VCC 11 Green
2 GND 12 GND
3 Keyboard Data 13 Blue
4 Keyboard

Clock
5 N.C. 15 VCC
6 Mouse Data 16 DDC Data
7 Mouse Clock 17 DDC Clock
8 GND 18 GND
9 Red 19 Horizontal Sync

10 GND 20 Vertical Sync

14 GND

19
20

2.4.5 Audio Connector: CN8

1
2

CN8 is a 10-pin connector to support the audio interface.

Pin Signal Pin Signal

1 MIC-IN 2 GND
3 Line In L 4 GND
5 Line In R 6 GND
7 Audio Out L 8 GND
9 Audio Out R 10 GND

14 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

2.4.6 Ethernet Connector: CN1

CN1 is an Ethernet connector that connects the AX12270 to a 10­Base-T or 100-Base-T hub just by plugging one end of the cable to
LAN1, and connecting the other end (phone jack) to a 10-Base-T or
100-Base-T hub.

Pin Signal Pin Signal

1 100 LAN LED

3 GND

5 N.C. 6 Rx- (Data reception

7 N.C. 8 N.C.

9 Rx+(Data reception

positive)

11 Tx+ (Data transmission

positive)

13 VCC

2 VCC

4 N.C.

negative)

10 Tx- (Data transmission

negative)

12 N.C.

14 Active LED

2.4.7 IDE Interface Connector: CN9

There is one channel to support two IDE drives. Here is a list of IDE1
connector (44-pin) Pin Assignment

Pin Signal Pin Signal Pin Signal

1 Reset # 2 GND 3 Data 7
4 Data 8 5 Data 6 6 Data 9

7 Data 5 8 Data 10 9 Data 4
10 Data 11 11 Data 3 12 Data 12
13 Data 2 14 Data 13 15 Data 1

Jumpers and Connectors 15

:

AX12270 PC/104 Module Series User’s Manual

Pin Signal Pin Signal Pin Signal

16 Data 14 17 Data 0 18 Data 15
19 GND 20 N.C. 21 DREQ
22 GND 23 IOW # 24 GND
25 IOR # 26 GND 27 IORDY
28 Pull down 29 DACK# 30 GND
31 IRQ 32 N.C. 33 SA1
34 PDIAG 35 SA0 36 SA2
37 CS1 # 38 CS3 # 39 Active #
40 GND 41 VCC 42 VCC
43 GND 44 N.C.

2.4.8 CPU Fan Connector: CN20

A CPU fan is always needed for cooling CPU heat. The CPU fan
connector CN20 provides power to the fan.

Pin Signal

1 GND
2 +5V

12

16 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

2.4.9 Serial Port Interface Connector: CN2

The AX12270 has two onboard serial ports, CN2 for RS232, and
CN10, CN11 for RS-232/422/485, jumper selectable.

Pin Signal Pin Signal

1 NDCD2 11 NDCD4
2 NDSR2 12 NDSR4
3 NRX2 13 NRX4
4 NRTS2 14 NRTS4
5 NTX2 15 NTX4
6 NCTS2 16 NCTS4

19
20

1
2

7 NDTR2 17 NDTR4
8 NRI2 18 NRI4
9 GND 19 GND

10 N.C 20 N.C

Jumpers and Connectors 17

AX12270 PC/104 Module Series User’s Manual

2.4.10 Flat Panel Bezel Connector: CN16

 Power LED

This 3-pin connector named as Pin 1 and Pin 5 connect the system
power LED indicator to such a switch on the case. Pin 1 is assigned
as +, and Pin 5 as -. The Power LED lights up when the system is
powered ON.

 External Speaker and Internal Buzzer Connector

Pin 2, 4, 6 and 8 can be connected to the case-mounted speaker unit
or internal buzzer. While connecting the CPU card to an internal
buzzer, please short pins 2-4; while connecting to an external speaker,
you need to set pins 2-4 to Open and connect the speaker cable to
pin 8 (+) and pin 2 (-).

 ATX Power On/Off Button

This 2-pin connector named as Pin 9 and 10 connect the front panel’s
ATX power button to the CPU card, which allows users to control ATX
power supply to be power on/off.

 System Reset Switch

Pin 11 and 12 can be connected to the case-mounted reset switch
that reboots your computer, not turns OFF the power switch. It is a
better way to reboot your system for a longer life of the system’s
power supply.

18 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

 HDD Activity LED

This connection is linked to hard drive activity LED on the control
panel. LED flashes when HDD is being accessed. Pin 13 and 14
connect the hard disk drive to the front panel HDD LED, Pin 13
assigned as -, and Pin 14 as +.

2.4.11 PC/104 Bus Connector: CN13

The PC/104 is an industrial standard with a compact form factor of

3.6” x 3.8” dimensions, and fully compatible with the ISA Bus. The
PC/104 interface is easily adapted to off -shelf PC/104 modules, such
as sound module, fax modem module and multi-I/O module.

Pin Signal Pin Signal Pin Signal Pin Signal

1 IOCHCHK* 2 0V 3 SD7 4 RESETDRV
5 SD6 6 +5V 7 SD5 8 IRQ9

9 SD4 10 -5V 11 SD3 12 DRQ2
13 SD2 14 -12V 15 SD1 16 ENDXFR*
17 SD0 18 +12V 19 IOCHRDY 20 (KEY)
21 AEN 22 SMEMW* 23 SA19 24 SMEMR*
25 SA18 26 IOW* 27 SA17 28 IOR *
29 SA16 30 DACK3* 31 SA15 32 DRQ3
33 SA14 34 DACK1* 35 SA13 36 DRQ1
37 SA12 38 REFRESH* 39 SA11 40 SYSCLK
41 SA10 42 IRQ7 43 SA9 44 IRQ6
45 SA8 46 IRQ5 47 SA7 48 IRQ4
49 SA6 50 IRQ3 51 SA5 52 DACK2*
53 SA4 54 TC 55 SA3 56 SALE
57 SA2 58 +5V 59 SA1 60 OSC
61 SA0 62 0V 63 0V 64 0V

Jumpers and Connectors 19

AX12270 PC/104 Module Series User’s Manual

2.4.12 PC/104 Bus Connector: CN12

Pin Signal Pin Signal Pin Signal Pin Signal

1 0V 2 0V 3 MEMCS16* 4 SBHE*
5 IOCS16* 6 LA23 7 IRQ10 8 LA22

9 IRQ11 10 LA21 11 IRQ12 12 LA20
13 IRQ15 14 LA19 15 IRQ14 16 LA18
17 DACK0* 18 LA17 19 DRQ0 20 MEMR*
21 DACK5* 22 MEMW* 23 DRQ5 24 SD8
25 DACK6* 26 SD9 27 DRQ6 28 SD10
29 DACK7* 30 SD11 31 DRQ7 32 SD12
33 +5V 34 SD13 35 MASTER* 36 SD14
37 0V 38 SD15 39 0V 40 (KEY)

2.4.13 PCI104 Bus: CN14

Pin Signal Pin Signal Pin Signal Pin Signal

A1 N.C B1 Reserved C1 +5V D1 AD0
A2 N.C B2 AD2 C2 AD1 D2 +5V
A3 AD5 B3 GND C3 AD4 D3 AD3
A4 C/BE0# B4 AD7 C4 GND D4 AD6
A5 GND B5 AD9 C5 AD8 D5 GND
A6 AD11 B6 N.C C6 AD10 D6 M66EN
A7 AD14 B7 AD13 C7 GND D7 AD12
A8 +3.3V B8 C/BE1# C8 AD15 D8 +3.3V

A9 SERR# B9 GND C9 SB0# D9 PAR
A10 GND B10 PERR# C10 +3.3V D10 SDONE
A11 STOP* B11 +3.3V C11 LOCK# D11 GND
A12 +3.3V B12 TRDY# C12 GND D12 DEVSEL#
A13 FRAME# B13 GND C13 IRDY# D13 +3.3V
A14 GND B14 AD16 C14 +3.3V D14 C/BE2#

20 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

Pin Signal Pin Signal Pin Signal Pin Signal

A15 AD18 B15 +3.3V C15 AD17 D15 GND
A16 AD21 B16 AD20 C16 GND D16 AD19
A17 +3.3V B17 AD23 C17 AD22 D17 +3.3V
A18 IDSEL0 B18 GND C18 IDSEL1 D18 IDSEL2
A19 AD24 B19 C/BE3# C19 N.C. D19 IDSEL3
A20 GND B20 AD26 C20 AD25 D20 GND
A21 AD29 B21 +5V C21 AD28 D21 AD27
A22 +5V B22 AD30 C22 GND D22 AD31
A23 REQ0# B23 GND C23 REQ1# D23 N.C.
A24 GND B24 REQ2# C24 +5V D24 GNT0#
A25 GNT1# B25 N.C C25 GNT2# D25 GND
A26 +5V B26 CLK0 C26 GND D26 CLK1
A27 CLK2 B27 +5V C27 CLK3 D27 GND
A28 GND B28 INTD# C28 +5V D28 RST#
A29 +12V B29 INTA# C29 INTB# D29 INTC#
A30 -12V B30 Reserved C30 Reserved D30 GND

2.4.14 DIO Connector: CN15

Pin Signal

1 In-0
2 In-1
3 In-2
4 GND
5 Out-0
6 Out-1
7 Out-2
8 Out-3
9 Out-4

Jumpers and Connectors 21

AX12270 PC/104 Module Series User’s Manual

2.4.15 Power Connector 1: CN18

Use this connector to connect +12V & +5V power supply.

PIN Signal

1 +12V
2 GND
3 GND
4 GND
5 +5V
6 +5V

2.4.16 Power Connector 2: CN19

Connector CN19 is a +5V Standby & PS On Connector.

PIN Signal PIN Signal

1 +5V Standby 2 GND
3 GND 4 PS_ON

22 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

2.4.17 SMBUS Connector: CN17

Use this connector CN17 to connect SMBUS devices.

Pin Signal

1 CLOCK
2 DATA
3 GND

1

2.4.18 Battery Connector: SBAT2

Pin Signal

1 Cathode
2 Anode

2

3

1

Jumpers and Connectors 23

AX12270 PC/104 Module Series User’s Manual

MEMO

24 Jumpers and Connectors

AX12270 PC/104 Module Series User’s Manual

C h a p t e r 3

Hardware Description

This chapter provides you with detailed description about the

AX12270 CPU board’s hardware features.

3.1 Processor

The AX12270 comes with an embedded high-performance VIA V4
compliant Eden processor. The CPU can be operated under Windows
CE, Windows XP, Winsows XP Embedded and Embedded Linux
systems.

3.2 CPU Bus Clock

The Host Clock can be doubled inside the CPU to operate in a range
of 400MHz.

3.3 BIOS

The AX12270 uses Award Plug and Play BIOS with a single 4Mbit
Flash EPROM.

3.4 System Memory

The AX12270 PC/104 CPU module supports DDR2 memory onboard
with maximum system memory 256MB unbufferred SDRAMs.

Hardware Description 25

AX12270 PC/104 Module Series User’s Manual

3.5 I/O Port Address Map

The CPU card communicates via I/O ports. A total 1KB port
addresses can be assigned to other devices via I/O expansion cards.

Address Devices

000-01F DMA controller #1
020-003 Interrupt controller #1
022-023 STPC Specific Registers
040-043 Timer Controller

060 Keyboard controller
061 Port B
064 Kbd Ctlr, CMD, STAT Byte
070 Real Time Clock
071 Real Time Clock Data
078 General Purpose I/O

080-08F DMA page register

0A0-A1 Interrupt controller #2

0C0-0DE DMA controller #1

0F0 Reset Numeric Error
102 VGA Setup Register

170-177 Secondary IDE Channel
1F0-1F7 Primary IDE Channel
2F8-2FF Serial Port 2#2 (COM2)

378-37F Parallel Port 1

3B4, 3B5, 3BA VGA Registers
3D4, 3D5, 3DA VGA Registers

03C-3F5 VGA Registers

3F6 IDE Command Port
3F7 Floopy Command Port

3F8-3FF Serial Port 1#1 (COM1)

CF8 PCI Configuration Address Registers

CFC-CFF PCI Configuration Data Registers

46E8 VGA Add-in mode enable Register

26 Hardware Description

AX12270 PC/104 Module Series User’s Manual

Address Devices

C000-C0FF PCI Configuration Registers

3F8-3FF Serial port #3 (COM3)
2E8-2EF Serial port #4 (COM4)

3.6 Interrupt Controller

The AX12270 is a fully PC compatible control board. The mapping list
of the 16 interrupt request lines is shown as below:

NMI Parity check error

IRQ0 System timer output
IRQ1 Keyboard
IRQ2 Interrupt rerouting from IRQ8 through IRQ15
IRQ3 Serial port #2
IRQ4 Serial port #1
IRQ5 Serial port #3
IRQ6 Floppy disk controller
IRQ7 Parallel port #1
IRQ8 Real time clock

IRQ9 Ethernet
IRQ10 Serial port #4
IRQ11 User available
IRQ12 PS/2 Mouse
IRQ13 Math coprocessor
IRQ14 Primary IDE channel
IRQ15 Secondary IDE Channel

Hardware Description 27

AX12270 PC/104 Module Series User’s Manual

MEMO

28 Hardware Description

AX12270 PC/104 Module Series User’s Manual

C h a p t e r 4

Award BIOS Utility

The Phoenix-Award BIOS provides users with a built-in Setup program
to modify basic system configuration. All configured parameters are
stored in a battery-backed-up RAM (CMOS RAM) to save the Setup
information whenever the power is turned off.

4.1 Entering Setup

There are two ways to enter the Setup program. You may either turn
ON the computer and press <Del> immediately, or press the <Del>
and/or <Ctrl>, <Alt>, and <Esc> keys simultaneously when the
following message appears at the bottom of the screen during POST
(Power on Self Test).

TO ENTER SETUP PRESS DEL KEY

If the message disappears before you respond and you still wish to
enter Setup, restart the system and try again. This is possible by
turning the system power to OFF then to ON, pressing the "RESET"
button on the system case, or by simultaneously pressing <Ctrl>, <Alt>,
and <Del> keys. If you do not press the keys at the correct time and the
system does not boot, an error message will be displayed and you will
be prompted with the following:

PRESS <F1> TO CONTINUE, <CTRL-ALT-ESC> OR <DEL> TO ENTER SETUP

Award BIOS Utility 29

AX12270 PC/104 Module Series User’s Manual

4.2 Control Keys

Up arrow
Down arrow

Left arrow
Right arrow

Esc key

PgUp/“+” key
PgDn/“−“ key

F1 key

(Shift) F2 key
F3 key

F4 key
F5 key

F6 key

F7 key
F8 key

F9 key
F10 key

Moves cursor to the previous item
Moves cursor to the next item

Moves cursor to the item on the left hand
Move to the item in the right hand
Main Menu -- Quits and deletes changes into CMOS

Status Page Setup Menu and Option Page Setup
Menu -- Exits current page and returns to Main Menu
Increases the numeric value or makes changes

Decreases the numeric value or makes changes
General help, only for Status Page Setup Menu and

Option Page Setup Menu
Change color from total 16 colors. F2 to select color
forward, (Shift) F2 to select color backward
Reserved

Reserved
Restores the previous CMOS value from CMOS, only

for Option Page Setup Menu
Loads the default CMOS value from BIOS default
table, only for Option Page Setup Menu
Loads the Setup default, only for Option Page Setup
Menu
Reserved

Reserved
Saves all the CMOS changes, only for Main Menu

4.3 Getting Help

z Main Menu

The on-line description of the highlighted setup function is
displayed at the bottom of the screen.

z Status Page Setup Menu/Option Page Setup Menu

Press <F1> to pop up a small help window that describes the
appropriate keys to use and the possible selections for the
highlighted item. To exit the Help Window press <F1> or

<Esc>.

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4.4 The Main Menu

Once you enter the Award BIOS CMOS Setup Utility, the Main Menu
will appear on the screen. The Main Menu allows you to select from ten
setup functions and two exit choices. Use the arrow keys to select the
setup function you intend to configure then press <Enter> to accept or
enter its sub-menu.

NOTE: If you find that your computer cannot boot after making and

saving system changes with Setup, the Award BIOS, via its
built-in override feature, resets your system to the CMOS
default settings.

We strongly recommend that you avoid making any changes to the
chipset defaults. These defaults have been carefully chosen by both
Award and your system manufacturer to provide the absolute maximum
performance and reliability.

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4.5 Standard CMOS Setup Menu

The items in Standard CMOS Setup Menu are divided into 10
categories. Each category includes no, one or more than one setup
items. Use the arrow keys to highlight the item and then use the
<PgUp> or <PgDn> keys to select the value you want in each item.

z Date

The date format is <day>, <date> <month> <year>. Press <F3> to
show the calendar.

day

date
month

year

z Time

The day of week, from Sun to Sat, determined by the
BIOS, is read only

The date, from 1 to 31 (or the maximum allowed in the
month), can key in the numerical / function key

The month, Jan through Dec.
The year, depends on the year of BIOS

The time format is <hour> <minute> <second> accepting either
functions key or numerical key. The time is calculated based on the
24-hour military-time clock. For example, 1 p.m. is 13:00:00.

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z IDE Primary Master/Primary Slave

The categories identify the types of one channel that have been
installed in the computer. There are 45 predefined types and 2
users definable types are for Enhanced IDE BIOS. Type 1 to Type
45 is predefined. Type User is user-definable.

Press <PgUp>/<+> or <PgDn>/<−> to select a numbered hard disk
type or type the number and press <Enter>. Note that the
specifications of your drive must match with the drive table. The
hard disk will not work properly if you enter improper information
within this category. If your hard disk drive type does not match or
is not listed, you can use Type User to define your own drive type
manually.

If you select Type User, related information is asked to be entered
to the following items. Enter the information directly from the
keyboard and press <Enter>. This information should be provided
in the documentation from your hard disk vendor or the system
manufacturer.

If the controller of HDD interface is ESDI, select “Type 1”.
If the controller of HDD interface is SCSI, select “None”.
If the controller of HDD interface is CD-ROM, select “None”.

CYLS.
HEADS
PRECOMP

number of cylinders
number of heads
write precom

LANDZONE
SECTORS
MODE

landing zone
number of sectors
HDD access mode

If there is no hard disk drive installed, select NONE and press
<Enter>.

z Halt On

This field determines whether the system will halt if an error is
detected during power up.

No errors

All errors

All, But
Keyboard

The system boot will halt on any error detected.
(default)

Whenever the BIOS detect a non-fatal error, the
system will stop and you will be prompted.

The system boot will not stop for a keyboard error;
it will stop for all other errors.

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All, But
Diskette

The system boot will not stop for a disk error; it will
stop for all other errors.

All, But
Disk/Key

The system boot will not stop for a keyboard or disk
error; it will stop for all other errors.

Press <Esc> to return to the Main Menu page.

4.6 Advanced BIOS Features

This section allows you to configure and improve your system and
allows you to set up some system features according to your
preference.

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z Hard Disk Boot Priority

Scroll to this item and press <Enter> to view the sub menu to
decide the disk boot priority.

Press <Esc> to return to the Advanced BIOS Features page.

z CPU L1 & L2 Cache /L3 Cache

These items enable or disable the actual CPU interal level 1/2
cache or level 3 cache function. Leave these items at default value
for better performance.

Enabled
Disabled

Enable cache
Disable cache

z Quick Power On Self Test

This option speeds up Power on Self Test (POST) after you turn on
the system power. If set as Enabled, BIOS will shorten or skip
some check items during POST. The default setting is “Enabled”.

Enabled
Disabled

Enable Quick POST
Normal POST

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z First/Second/Third Boot Device

These items allow the selection of the 1

st

, 2nd, and 3rd devices that
the system will search for during its boot-up sequence. The wide
range of selection includes Floppy, LS120, ZIP100, HDD0~3, SCSI,
and CDROM.

z Boot Other Device

This item allows the user to enable/disable the boot device not
listed on the First/Second/Third boot devices option above. The
default setting is Enabled.

z Boot Up NumLock Status

Selects power on state for NumLock. The default value is “On”.

z Typematic Rate Setting

This determines the typematic rate of the keyboard. The default
value is “Disabled”.

Enabled

Disabled

Enable typematic rate and typematic delay
programming

Disable typematic rate and typematic delay
programming. The system BIOS will use default value
of these 2 items and the default is controlled by
keyboard.

z Typematic Rate (Chars/Sec)

This option refers to the number of characters the keyboard can
type per second. The default value is “6”.

6

8
10
12
15
20
24
30

6 characters per second
8 characters per second
10 characters per second
12 characters per second
15 characters per second
20 characters per second
24 characters per second
30 characters per second

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z Typematic Delay (Msec)

This option sets the display time interval from the first to the second
character when holding a key. The default value is “250”.

250
500
750
1000

z Security Option

250 msec
500 msec
750 msec
1000 msec

This item allows you to limit access to the system and Setup, or
just to Setup. The default value is “Setup”.

System

Setup

The system will not boot and access to Setup will be
denied if the incorrect password is entered at the prompt.

The system will boot, but access to Setup will be denied if
the correct password is not entered at the prompt.

NOTE: To disable security, select PASSWORD SETTING

at Main Menu and then you will be asked to enter
password. Do not type anything, just press <Enter>
and it will disable security. Once the security is
disabled, the system will boot and you can enter
Setup freely.

z MPS Version Control For OS

This item specifies the version of the Multiprocessor Specification
(MPS). Version 1.4 has extended configuration tables to improve
support for multiple PCI bus configurations and provide future
expandability.

z Video BIOS Shadow

Enable this parameter to turn on BIOS ROM shadowing for the
block of memory normally used for standard VGA video ROM code.

z Small Logo (EPA) Show

Set the Logo (EPA) show or not. The default value is “Disabled”.

Press <Esc> to return to the Main Menu page.

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4.7 Advanced Chipset Features

Since the features in this section are related to the chipset on the CPU
board and are completely optimized, you are not recommended to
change the default settings in this setup table unless you are well
oriented with the chipset features.

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z DRAM Clock/Drive Control

Scroll to this item and press <Enter> to view the sub menu DRAM
Clock/Drive Control.

z Current FSB/DRAM Frequency

These items allow you to manually determine CPU Front-Side Bus
(FSB) and memory speed.

z DRAM Clock

Use this item to adjust memory speed. Option By SPD (Serial
Detect Presence) makes it possible to do an automatic selection.

z DRAM Timing

Use this item to increase the timing of the memory. This is related
to the cooling of memory.

z Read to Precharge (Trtp)

Use this item to adjust time interval between a read and a
precharge command.

z Write to Read CMD (Twtr)

The default time setting is 1T/2T.

z Write Recovery Time (Twr)

Use this item to specify the time (in cycles of clock) necessarily

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inserted between the operation of valid writing memory and a
cooling report.

z DRAM Command Rate

Use this item to manually define the chipset-to-memory latency
values.

z RDSAIT Mode

This item is to select the RDSAIT mode auto or manual.

Press <Esc> to return to the Advanced Chipset Featurs page.

z AGP & P2P Bridge Control

Use this item to set AGP and P2P Bridge controls for allocating
system RAM amount to AGP for video purposes.

z CPU & PCI Bus Control

Use this item to enable the immediate Write to PCI Bus, or disable
it for a later execution.

z System BIOS Cacheable

Use this item to enable or disable the system BIOS cache.

z Video RAM Cacheable

Use this item to enable or disable the video RAM cache.

z Init Display First

If two video cards are used (1 AGP and 1 PCI), use this item to
specify one of them as the primary display adapter. The default is
PCI Slot.

z Select Display Device

This item allows you to select the output for your system display.
Configuration options: [CRT] [Flat Panel] [Panel +CRT].

z Panel Type

This setting refers to the native resolution of the display.

Press <Esc> to return to the Main Menu page.

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4.8 Integrated Peripherals

This section allows you to configure your SuperIO Device, IDE
Function, Onboard Device, and ITE8888.

z VIA OnChip IDE Device

Scroll to this item and press <Enter> to view the sub menu VIA
OnChip IDE Device.

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¾ IDE DMA transfer access

Automatic data transfer between system memory and IDE
device with minimum CPU intervention. This improves data
throughput and frees CPU to perform other tasks.

¾ OnChip IDE Channel0/1

The board supports two channel of ordinary IDE interface.
Select “Enabled” to activate each channel separately.

¾ IDE Prefetch Mode

Selecting “Enabled” reduces latency between each drive
read/write cycle, but may cause instability in IDE
subsystems that cannot support such fast performance. If
you are getting disk drive errors, try setting this value to
Disabled. This field does not appear when the Internal
PCI/IDE field, above, is Disabled.

¾ IDE Master/Slave PIO

The four IDE PIO (Programmed Input/Output) fields let you
set a PIO mode (0-4) for each of the four IDE devices that
the onboard IDE interface supports. Modes 0 to 4 provide
successively increased performance. In Auto mode, the
system automatically determines the best mode for each
device.

¾ IDE Master/Slave UDMA

Select the mode of operation for the IDE drive. Ultra DMA­33/66/100/133 implementation is possible only if your IDE
hard drive supports it and the operating environment
includes a DMA driver. If your hard drive and your system
software both support Ultra DMA-33/66/100/133, select Auto
to enable UDMA mode by BIOS.

¾ IDE HDD Block Mode

Block mode is also called block transfer, multiple commands,
or multiple sector read/write. If your IDE hard drive supports
block mode (most new drives do), select
Enabled for automatic detection of the optimal number of
block read/writes per sector the drive can support.

Press <Esc> to return to the Integrated Peripherals page.

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z VIA OnChip PCI Device

Scroll to this item and press <Enter> to view the sub menu VIA
OnChip PCI Device.

¾ Azalia HDA Controller

This item allows you to disable or set the Azalia HDA
Controller (High Definition Audio).

¾ Onboard Lan Boot ROM

Use this item to enables the onboard LAN Boot feature.

Press <Esc> to return to the Integrated Peripherals page.

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z Super IO Device

Scroll to this item and press <Enter> to view the sub menu Super
IO Device.

¾ Onboard Serial Port 1 / 2

Select an address and corresponding interrupt for the serial
port. Options: 3F8/IRQ4, 2E8/IRQ3, 3E8/IRQ4, 2F8/IRQ3,
Disabled, Auto.

Press <Esc> to return to the Integrated Peripherals page.

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z USB Device Setting

Scroll to this item and press <Enter> to view the sub menu USB
Device Setting.

¾ USB1.1 Controller

This setting is used to enable/disable the onboard USB 1.1
controller.

¾ USB 2.0 Controller

This setting is used to enable/disable the onboard USB 2.0
controller.

¾ USB Operation Mode

This setting controls the USB operation speed.

¾ USB Keyboard / Mouse / Storage Function

Set to [Enabled] if your need to use a USB-interfaced
keyboard/mouse/storage device in the operating system that
does not support or have any USB driver installed, such as
DOS and SCO Unix.

Press <Esc> to return to the Integrated Peripherals, and next to the
Main Menu page.

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4.9 Power Management Setup

The Power Management Setup allows you to save energy of your
system effectively. It will shut down the hard disk and turn OFF video
display after a period of inactivity.

z ACPI Function

This item allows you to enable/disable the Advanced Configuration
and Power Management (ACPI). The function is always Enabled.

z ACPI Suspend Type

This item specifies the power saving modes for ACPI function. It
only supports S1:

[S1(POS)] The S1 sleep mode is a low power state. In this
state, no system context is lost (CPU or chipset) and
hardware maintains all system context.

z Power Management

This option allows you to select the type of power Management.
The options available are APM, ACPI.

z HDD Power Down

If HDD activity is not detected for the length of time specified in this
field, the hard disk drive will be powered down while all other
devices remain active.

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z Suspend Mode

After the selected period of system inactivity (1 minute to 1 hour),
all devices except the CPU shut off. The default value is “Disabled”.

Disabled

1/2/4/6/8/10/2
0/30/40
Min/1 Hr

z Video Off Option

System will never enter SUSPEND mode
Defines the continuous idle time before the system

entering SUSPEND mode.
If any item defined in (J) is enabled & active,
SUSPEND timer will be reloaded

This setting is used to control the mode in which the monitor will
shut down. Setting options are:

Always On
Suspend Æ

Off
Susp, StbyÆ

Off
All Modes Æ

Off

Monitor remains on during power-saving modes.
Monitor blanked when system enters Suspend mode.

Monitor blanked when system enters either Suspend
or Standby mode.

Monitor blanked when system enters any power saving.

z Video Off Method

This setting determines the manner in which the monitor is blanked.

z Modem Use IRQ

3, 4, 5, 7, 9,
10, 11, NA

For external modem, 3 or 4 will be used for card type
modem. It is up to card definition. Default is 3.

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z Soft-Off by PWRBTN

This feature allows users to configure the power button function.
Settings are:

This option follows the conventional manner systems

Instant-Off

Delay 4 Sec.

z Ac Loss Auto Restart

perform when power is turned OFF. Instant-Off is a soft
power OFF sequence requiring only the switching of the
power supply button to OFF

Upon turning OFF system from the power switch, this
option will delay the complete system power OFF
sequence by approximately 4 seconds. Within this delay
period, system will temporarily enter into Suspend Mode
enabling you to restart the system at once.

This setting specifies whether your system will reboot after a power
failure or interrupt occurs. Available settings are:

Off
On
Former-sts

z Wakeup Event Detect

Leaves the computer in the power off state.

Leaves the computer in the power on state.
Restores the system to the status before power failure

or interrupt occurred.

Scroll to this item and press <Enter> to view the sub menu Wakeup
Event Detect.

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¾ PS2 KB Wakeup Select

The item specifies how the system will be awakened from
power saving mode when input signal of the PS2 keyboard
is detected. Use the <PageUp> & <PageDown> keys to
select the options. When selecting [Password], enter the
desired password.

¾ PS2 KB Wakeup Key Select

This setting only works when PS2 KB Wakeup Select is set
to [Hot Key].

¾ PS2 MS Wakeup Key Select

This setting determines whether the system will be
awakened from power saving modes when input signal of
the PS/2 mouse is detected.

¾ Power On by PCI Card

When setting to [Enabled], this setting allows your system to
be awakened from the power saving modes through any
event on PCI PME (Power Management Event).

¾ Modem Ring Resume

This item enables the modem ring to wake up the computer
system from a power saving mode.

¾ RTC Alarm Resume

When [Enabled], your can set the date and time at which the
RTC (real-time clock) alarm awakens the system from
suspend mode.

¾ Date (of Month)

When RTC Alarm Resume is set to [Enabled], the field
specifies the month for it.

¾ Resume Time (hh:mm:ss)

You can choose what hour, minute and second the system
will boot up.

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4.10 PnP/PCI Configuration Setup

This section describes configuring the PCI bus system. PCI, or
Personal Computer Interconnect, is a system which allows I/O devices
to operate at speeds nearing the speed the CPU itself uses when
communicating with its own special components. This section covers
some very technical items and it is strongly recommended that only
experienced users should make any changes to the default settings.

z PNP OS Installed

Select Yes if the system operating environment is Plug-and-Play
aware (e.g., Windows 95). The default value is “No”.

z Reset Configuration Data

Normally, you leave this field Disabled. Select Enabled to reset
Extended System Configuration Data (ESCD) when you exit Setup
or if you have installed a new add-on and the system
reconfiguration has caused such a serious conflict that the
operating system can not boot. The options available are Enabled
and Disabled.

z Resources Controlled By

The Award Plug and Play BIOS can automatically configure all the
boot and Plug and Play-compatible devices. If you select Auto, all
the interrupt request (IRQ), DMA assignment, and Used DMA fields
disappear, as the BIOS automatically assigns them. The default

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value is “Manual”.

z IRQ Resources

When resources are controlled manually, assign each system
interrupt as one of the following types, depending on the type of
device using the interrupt:

1. Legacy ISA Devices compliant with the original PC AT bus
specification, requiring a specific interrupt (such as IRQ4 for serial port

1).

2. PCI/ISA PnP Devices compliant with the Plug and Play standard,
whether designed for PCI or ISA bus architecture.

The default value is “PCI/ISA PnP”.

z PCI/VGA Palette Snoop

Some non-standard VGA display cards may not show colors
properly. This field allows you to set whether MPEG ISA/VESA
VGA Cards can work with PCI/VGA or not. When enabled, a
PCI/VGA can work with a MPEG ISA/VESA VGA card. When
disabled, a PCI/VGA cannot work with a MPEG ISA/VESA Card.

z Assign IRQ For VGA

The Enabled item allows the BIOS to auto-route an IRQ for use by
a VGA card.

z Assign IRQ For USB

It enables or disables IRQ allocation for the USB (Universal Serial
Bus). Enable this if you are using a USB device.

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4.11 PC Health Status

This section describes about the hardware monitoring that lets you
monitor the parameters for critical voltages, critical temperatures, and
fan speeds.

z Current CPU Temperature

These read-only fields reflect the functions of the hardware thermal
sensor that monitors the chip blocks and system temperatures to
ensure the system is stable.

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4.12 Frequency/Voltage Control

This section is to control the CPU frequency and Supply Voltage, DIMM
OverVoltage and AGP voltage.

z CPU Clock Ratio

This item shows the multiplier of the CPU.

z Auto Detect PCI Clk

The enabled item can automatically disable the clock source for a
PCI slot which does not have a module in it, reducing EMI
(ElectroMagnetic Interference).

z Spread Spectrum

If spread spectrum is enabled, EMI (ElectroMagnetic Interference)
generated by the system can be significantly reduced.

z CPU Clock

This item shows the CPU’s clock.

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4.13 Load Optimized Defaults

This option allows you to load the default values to your system
configuration. These default settings are optimal and enable all high
performance features. To load BIOS defaults value to CMOS SRAM,
enter “Y”. If not, enter “N”.

4.14 Set Supervisor/User Password

You can set either supervisor or user password, or both of then. The
differences between are:

1. Supervisor password: can enter and change the options of the

setup menus.

2. User password: just can enter but do not have the right to change

the options of the setup menus.

When you select this function, the following message will appear at the
center of the screen to assist you in creating a password.

ENTER PASSWORD:

Type the password with eight characters at most, and press <Enter>.
The password typed will now clear any previously entered password
from CMOS memory. You will be asked to confirm the password. Type
the password again and press <Enter>. You may also press <Esc> to
abort the selection and not enter a password.

To disable password, just press <Enter> when you are prompted to
enter password. A message will confirm the password being disabled.
Once the password is disabled, the system will boot and you can enter
Setup freely.

PASSWORD DISABLED.

When a password is enabled, you have to type it every time you enter
Setup. This prevents any unauthorized person from changing your
system configuration.

Additionally when a password is enabled, you can also require the
BIOS to request a password every time the system reboots. This would
prevent unauthorized use of your computer.

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You determine when the password is required within the BIOS
Features Setup Menu and its Security option. If the Security option is
set to “System”, the password is required during boot up and entry into
Setup. If set as “Setup”, prompting will only occur prior to entering
Setup.

4.15 Save & Exit Setup

This allows you to determine whether or not to accept the modifications.
Typing “Y” quits the setup utility and saves all changes into the CMOS
memory. Typing “N” brigs you back to Setup utility.

4.16 Exit Without Saving

Select this option to exit the Setup utility without saving the changes
you have made in this session. Typing “Y” will quit the Setup utility
without saving the modifications. Typing “N” will return you to Setup
utility.

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MEMO

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A p p e n d i x A

Watchdog Timer

Watdog Timer Setting

After the system stops working for a while, it can be auto-reset by the
Watchdog Timer. The integrated Watchdog Timer can be set up in the
system reset mode by program.

z Timeout Value Range

 1 to 255
 Second

z Program Sample

Watchdog Timer can be set to system reset after 5-second timeout.

2E, 87
2E, 87
2E, 07
2F, 08
2E, 29
2F, 20

2E F3

2F N

2E, F4

2F, M
2E, 30
2F, 01

Q

Enter the extended function mode
Enter the extended function mode

Logical Device 8

Set WDT Funtion Enable

0 or 4

M=00~FF
Activate

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Using the Watchdog Function

Start
↓
Un-Lock WDT :

O 2E 87 ; Un-lock super I/O

O 2E 87 ; Un-lock super I/O
↓
Select Logic device :
O 2E 07
O 2F 08
↓
Set WDT Funtion :
O 2E 29
O 2F 20
↓
Set Second or Minute :

O 2E F3

O 2F N =00 or 04(See below table)
↓
Set base timer :

O 2E F4

O 2F M=00,01,02,…FF(Hex) ,Value=0 to 255

↓
IF No re-set timer : WDT time-out, generate RESET

IF to disable WDT :

O 2E 30

O 2F 00 ; Can be disable at any time

Activate WDT :

O 2E 30

O 2F 01

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AX12270 PC/104 Module Series User’s Manual

M N=0 M N=0 M N=0 M N=4

02 1sec 33 50sec B5 180sec 11 992sec
03 2sec 38 55sec BF 190sec 22 2012sec
04 3sec 3D 60sec C9 200sec 33 3032sec
05 4sec 42 65sec D3 210sec 43 3992sec
06 5sec 47 70sec DD 220sec 54 5012sec
07 6sec 4C 75sec E7 230sec 65 6032sec
08 7sec 51 80sec F1 240sec 75 6992sec
09 8sec 56

M N=0 M N=0 M N=4 M N=4

0B 10sec 65 100sec 05 272sec 97 9032sec
10 15sec 6F 110sec 06 332sec A7 9992sec
15 20sec 79 120sec 07 392sec B8 11012sec
1A 25sec 83 130sec 08 452sec C9 12032sec
1F 30sec 8D 140sec 09 512sec D9 12992sec
24 35sec 97 150sec 0A 572sec EA 14012sec
29 40sec A1 160sec 0B 632sec FB 15032sec
2E 45sec AB 170sec 0C 692sec

85sec

FB 250sec 86 8012sec

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MEMO

60 Watchdog Timer

AX12270 PC/104 Module Series User’s Manual

A p p e n d i x B

Digital I/O Software Programming

z GPI program sample:

O 2E 87
O 2E 87

o 2e 07

o 2f 07

O 2E 29

o 2f 80

o 2e 30

o 2f 01

o 2e f0

o 2f ff

o 2e f1

i 2f

FE

q

Extended Functions Enable Register
Extended Functions Enable Register
EFIR=EFER (Extended Functions Index

Register) point to Logical Device Number
Reg.

EFDR=EFIR+1 (select logical device 7,
GPIO in logical device 7 )

Select CR29
(Define the PINs to be GPIO or Game Port

1) "80" Pin121 ~ 128 set GPIO
Select CR30 (Active or inactive)
Set 01 (Active), 00 (inactive)
Select CRF0 (Set the PINs to be GPO or

GPI Function)
Set the PINs to be GPI
Select CRF1 (Set the PINs to be Read

only??)
Show the PINs Status
Indicate GPO15 (CN15 Pin3) tie Low ,

other ties, High
Quit debug

Digital I/O

Digital I/O 61

AX12270 PC/104 Module Series User’s Manual

z GPO program sample:

O 2e 87
O 2e 87

o 2e 07

o 2f 07

O 2e 29

o 2f 80

o 2e 30

o 2f 01

o 2e f0

o 2f 00

o 2e f1

o 2f 00
o 2e f2

o 2f 00

q

Extended Functions Enable Register
Extended Functions Enable Register
EFIR=EFER (Extended Functions Index

Register) point to Logical Device Number
Reg.

EFDR=EFIR+1 (select logical device 7,
GPIO in logical device 7 )

Select CR29
(Define the PINs to be GPIO or Game Port

1) "80" Pin121 ~ 128 set GPIO
Select CR30 (Active or inactive)
Set 01 (Active), 00 (inactive)
Select CRF0 (Set the PINs to be GPO or

GPI Function)
Set the PINs to be GPO
Select CRF1 (Set the PINs to be Read

only??)
Set the PINs to be R/W
Select CRF2 (Ouput High / Low)
Set the PINs to be all Low Level (FF=all

High Level)
Quit debug

62 Digital I/O