AXIOMTEK SBC856A1 User manual

SBC856A1
POS Board
with DualView and Serial ATA
User’s Manual

ii
Disclaimers
The information in this manual has been carefully checked and is believed to
be accurate. Axiomtek Co., Ltd. assumes no responsibility for any
infringements of patents or other rights of third parties which may result from
its use.
Axiomtek assumes no responsibility for any inaccuracies that may be
contained in this document. Axiomtek makes no commitment to update or to
keep current the information contained in this manual.
Axiomtek reserves the right to make improvements to this document and/or
product at any time and 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.
©Copyright 2005 by Axiomtek Co., Ltd.
All rights reserved.
May 2005, Version A1
Printed in Taiwan

iii
ESD Precautions
Integrated circuits on computer boards are sensitive to static electricity.
To avoid damaging chips from electrostatic discharge, observe the
following precautions:
Do not remove boards or integrated circuits from their anti-static
packaging until you are ready to install them.
Before handling a board or integrated circuit, touch an unpainted
portion of the system unit chassis for a few seconds. This helps to
discharge any static electricity on 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.
IBM is a registered trademark of International Business Machines
Corporation.
MS-DOS, and Windows 95/98/NT/2000 are trademarks of
Microsoft Corporation.
Phoenix-Award is a trademark of Phoenix-Award Software, Inc.
IBM, PC/AT, PS/2, VGA are trademarks of International Business
Machines Corporation.
VIA EDEN are trademarks of VIA Corporation.
Other brand names and trademarks are the properties and
registered brands of their respective owners.

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Table of Contents v
Table of Contents
Disclaimers............................................................................ii
ESD Precautions..................................................................iii
C h a p t e r 1..............................................................................1
Introduction ...............................................................................1
1.1 Specifications ....................................................2
1.2 Utilities Supported.............................................4
C h a p t e r 2..............................................................................5
Jumpers and Connectors .........................................................5
2.1 Board Dimensions.............................................5
2.2 Board Layout......................................................6
2.3 Jumper Settings.................................................7
2.3.1 Audio Line Out/Speaker Out Jumper: JP1 ...................... 9
2.3.2 CMOS Clear Jumper: JP2 .................................................... 9
2.3.3 DiskOnChip
Memory Segment: JP3 ............................... 9
2.3.4 AT&ATX Selection: JP4...................................................... 9
2.3.5 COM1~COM6 Mode Select: JP6, JP7, JP14, JP15, JP16,
JP17 10
2.3.6 Watchdog Timer Trigger Mode Setting: JP8 .................. 11
2.3.7 COM2 RS232/422/485 Settings: JP9, JP10, JP11......... 11
2.3.8 IGA2 TTL/LVDS LCD VDD Selection (VDD of LCD1
and CN14): JP13.................................................................................... 11
2.3.9 IGA1 LVDS LCD VDD Selection (VDD of CN12):
JP12 12
2.3.10 DiskOnChip/NVRAM Selection JP18,JP19,JP20:........ 12
2.4 Connectors.......................................................12
2.4.1 ATX Connector: CN4........................................................ 14
2.4.2 SATA-150 1, 2 Connector: CN6, CN7............................ 14
2.4.3 Front Panel Bezel Connector: CN2 ................................. 15
2.4.4 USB 1&2, USB 3&4 Connector: USB1, USB2............... 17
2.4.5 IRDA Connector: CN5...................................................... 17
2.4.6 VGA Connector: VGA1 .................................................... 17
2.4.7 IGA1 LVDS Power Connector: CN8.............................. 18

vi Table of Contents
2.4.8 IGA1 24bit LVDS Connector: CN9................................ 18
2.4.9 IGA2 LVDS Power Connector: CN11 ........................... 18
2.4.10 IGA2 24bit LVDS Connector: CN12.............................. 19
2.4.11 Ethernet PJ-45 Connector: LAN1.................................... 19
2.4.12 FAN Connector: FAN1, FAN2........................................ 20
2.4.13 Floopy Disk Connector: FDD1........................................ 21
2.4.14 Keyboard & Mouse Connector: CN1, CN3 ................... 21
2.4.15 COM PORT Connector: COM1~COM6 ...................... 22
2.4.16 Print Port Connector: LPT................................................ 23
2.4.17 Audio Connector: AUDIO1 ............................................. 23
2.4.18 IGA2 24bit TTL Connector: LCD................................... 24
C h a p t e r 3............................................................................26
Hardware Description............................................................26
3.1 Microprocessors..............................................26
3.2 BIOS..................................................................26
3.3 System Memory ...............................................26
3.4 I/O Port Address Map ......................................27
C h a p t e r 4............................................................................30
Award BIOS Utility................................................................30
4.1 BIOS Introduction............................................30
4.2 BIOS Setup.......................................................30
4.2.1 Standard CMOS Setup ....................................................... 32
4.2.2 Advanced BIOS Features .................................................. 35
4.2.3 Advanced Chipset Features ............................................... 40
4.2.4 Integrated Peripherals......................................................... 43
4.2.5 Power Management Setup ................................................. 48
4.2.6 PNP / PCI Configuration.................................................. 50
4.2.7 PC Health Status ................................................................. 51
4.2.8 Frequency/Voltage Control .............................................. 52
4.2.9 Load Fail-Safe Defaults...................................................... 53
4.2.10 Set Supervisor / User Password ....................................... 54
4.2.11 Save & Exit Setup ............................................................... 55
4.2.12 Exit Without Saving............................................................ 56
A p p e n d i x A ......................................................................58

Table of Contents vii
Serial ATA Setup Information.............................................58
On-Chip Serial ATA configuration: ................................................... 58
A p p e n d i x B ......................................................................60
Watch Dog Timer....................................................................60
Watchdog Timer Setting ....................................................60
Using the Watchdog Function...........................................61

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SBC856A1 Series All-in-One POS Board User’s Manual
Introduction 1
C h a p t e r 1
Introduction
The SBC856A1 is a VIA EDEN 400/667/800/1G FANLESS -based
POS board with Ethernet and audio interface. Designed with the
space-limited applications in mind, the SBC856A1 is practically the
finest embedded PIII-level in existence. SBC856A1 can adapt a wide
variety of VIA EDEN microprocessors by BIOS auto-detection. To
simplify system integration, it packs embedded provisions such as
super I/Os, Graphics with DualView features, LCD (TTL & LVDS),
Ethernet (Gigabit & Fast), solid state disk, all on a single board.
Unique embedded features such as 4 serial ports (3 x RS-232, 1 x
RS-232/422/485) with +5V/12V power capability and simple
automation control are exclusive design features that allow adoption
of an extensive array of PC peripherals.

SBC856A1 Series All-in-One POS Board User’s Manual
2 Introduction
Designed for the professional embedded developers, the VIA EDEN
embedded board SBC856A1 is virtually the ultimate one-step solution
for embedded system applications.
1.1 Specifications
Chipset: CLE266+VT8237
Bus Clock: 66,100,133MHz
CPU: EDEN 400/667/800/1G
L2 Cache: Integrated in CPU
BIOS: 4Mbit PnP Flash BIOS
System Memory:
1 x 184-pin DIMM sockets
Maximum of 1GB DDR266 RAM
Onboard 128MB DDR RAM
IDE Interface:
2 Port of IDE x 40-pin
PIO Mode 0-4, DMA Mode 0-2 and Ultra
DMA/33/66/100/133
2 channels of SATA-150 with IDE mode supported(optional)
BIOS programmable for 4 IE channels (2*PATA-133 & 2*SATA-
150) as primary/secondary/third/forth IDE
Onboard Multi-I/O
One floppy port (26-pin FPC connector on the soldering
side) supporting one device
One SPP/EPP/ECP parallel port (box header)
Six 16550 UARTs compatible serial ports with +5V/+12V
power output in pin 1 or pin 9 via jumper setting
3~5 x RS-232 (box header)
1x RS-232/422/485 box header and selectable via
jumper setting(COM2)
1 x IrDA (box header) for wireless communcation

SBC856A1 Series All-in-One POS Board User’s Manual
Introduction 3
VGA Controller:
Internal AGP-4x controller integrated in VIA CLE266
Supports CRT, 24-bit TTL LCD or LVDS LCD(Option)
CRT resolution up to 1400x1050, Flat Panel up to
1600x1200
Supports DualView features as CRT+TTL LCD or Dual
LVDS LCD(Option)
LCD Backlight control supported
High quality DVD video Playback
Ethernet:
1x default RTL8100C for 10/100Base-T
USB Interface: 4 USB ports; USB Spec. Rev. 2.0
compliant
AUDIO
AC’97 2.2 S/PDIF extension compliant codec
18-bit stereo full duplex SD codec
3D stereo expansion for simulated surround
18-bit independent rate stereo ADC/DAC
4 stereo, 2 mono analog line-level inputs
Low Power consumption mode
Exceeds Microsoft® WHQL logo requirements
PCI Slot:
PCI extension slot for 2 PCI masters
Compact Flash TYPE II
Supports CompactFlash memory modules
IBM MicroDrive supported
PC104 plus:
Supports 3 PCI Masters and 1 slave
Power Management: ACPI (Advanced Configuration
and Power Interface)
Watchdog Timer: Watch Dog Timer Time-out value.
of 0~255 second
Operating Temperature: 0oC~60oC (32oF~140oF)

SBC856A1 Series All-in-One POS Board User’s Manual
4 Introduction
Operating Humidity: 5%~95%; non-condensing
Form Factor: 5.25” form factor
Dimensions: 203.20 x 146.05 mm2
NOTE: Specifications are subject to change without notice.
1.2 Utilities Supported
VIA Chipset Driver
Ethernet Utility and Drivers
VGA Drivers

SBC856A1 Series All-in-One POS Board User’s Manual
Jumpers and Connectors 5
C h a p t e r 2
Jumpers and Connectors
2.1 Board Dimensions
220.37
211.61
187.38
169.09
144.42
112.01
67.08
0.00
21.44
159.12
176.94
190.20
71.03
121.36
131.98
152.50
163.12
173.94
184.56
205.08
215.70
9.86 UNIT:MM
194.81
142.24
208.15
130.81
68.71
29.79
42.85
47.47
89.18
45.52
50.14
93.85
91.90
96.52
225.04
180.98
41.15
0.00

SBC856A1 Series All-in-One POS Board User’s Manual
6 Jumpers and Connectors
2.2 Board Layout
COM3 COM4 COM5 COM6
JP19 JP20
JP18

SBC856A1 Series All-in-One POS Board User’s Manual
Jumpers and Connectors 7
2.3 Jumper Settings
The SBC856A1 is configured to match the needs of your application by
proper jumper settings. The following tables show the correct jumper
settings for the onboard devices.
Jumper Default Setting Jumper Setting
JP1 Audio Line Out/Speaker Out
JumperSelection Default: Speak Out Short 3-5,4-6
JP2 Clear CMOS Selection
Default: VBAT Short 1-2
JP3 DiskOnChip Memory Segment : D0000-
D1FFF Short 1-2
JP4 AT&ATX Selection
Default:ATX Short 2-3
JP6 COM1 Mode: Pin 1=DCD, Pin 9=RI Short 7-9,8-10
JP7 COM2 Mode: Pin 1=DCD, Pin 9=RI Short 7-9,8-10
JP8 WatchdogTrigger Mode: Disabled Open
JP9 COM2 RS232/422/485
Default: RS232 Short 3-5,4-6
JP10 COM2 RS232/422/485
Default: RS232 Short 3-5,4-6
JP11 COM2 RS232/422/485
Default: RS232 Short 1-2
JP12 IGA1 LVDS LCD VDD Selection Default:
3.3V Short 2-3
JP13 IGA2 TTL/LVDS LCD VDD Selection Default:
TTL5V /LVDS 3.3V Short 2-3
JP14 COM3 Mode: Pin 1=DCD, Pin 8=RI Short 7-9,8-10
JP15 COM5 Mode: Pin 1=DCD, Pin 8=RI Short 7-9,8-10
JP16 COM4 Mode: Pin 1=DCD, Pin 8=RI Short 7-9,8-10
JP17 COM6 Mode: Pin 1=DCD, Pin 8=RI Short 7-9,8-10
JP18 DiskOnChip/NVRAM Select: DiskOnChip Short 1-2

SBC856A1 Series All-in-One POS Board User’s Manual
8 Jumpers and Connectors
JP19 DiskOnChip/NVRAM Select: DiskOnChip Short 1-2
JP20 DiskOnChip/NVRAM Select: DiskOnChip Short 1-2

SBC856A1 Series All-in-One POS Board User’s Manual
Jumpers and Connectors 9
2.3.1 Audio Line Out/Speaker Out Jumper: JP1
Options Settings
Line Out Short 1-3, 2-4
Speaker Out (default) Short 3-5, 4-6
JP1
2.3.2 CMOS Clear Jumper: JP2
Options Settings
Normal (default) Short 1-2
Clear CMOS Short 2-3
123
2.3.3 DiskOnChipMemory Segment: JP3
Options Settings
D0000 – D1FFF Short 3-5,4-6
D2000-D3FFF (Default) Short 1-3,4-6
D4000-D5FFF Short 3-5,2-4
D6000-D7FFF Short 1-3,2-4
JP3
2.3.4 AT&ATX Selection: JP4
Select Settings
AT POWER Short 1-2
ATX POWER Short 2-3(Default)
JP4
1
2
3

SBC856A1 Series All-in-One POS Board User’s Manual
10 Jumpers and Connectors
2.3.5 COM1~COM6 Mode Select: JP6, JP7, JP14,
JP15, JP16, JP17
COM1 JP6 COM2 JP7
Pin 1=12V Short 1-3 Pin 1=12V Short 1-3
Pin 1=5V Short 3-5 or 5-7 Pin 1=5V Short 3-5 or 5-7
*Pin 1=DCD Short 7-9 *Pin 1=DCD Short 7-9
Pin 9=12V Short 2-4 Pin 9=12V Short 2-4
Pin 9=5V Short 4-6 or 6-8 Pin 9=5V Short 4-6 or 6-8
*Pin 9=RI Short 8-10 *Pin 9=RI Short 8-10
COM3 JP14 COM4 JP16
Pin 1=12V Short 1-3 Pin 1=12V Short 1-3
Pin 1=5V Short 3-5 or 5-7 Pin 1=5V Short 3-5 or 5-7
*Pin 1=DCD Short 7-9 *Pin 1=DCD Short 7-9
Pin 8=12V Short 2-4 Pin 8=12V Short 2-4
Pin 8=5V Short 4-6 or 6-8 Pin 8=5V Short 4-6 or 6-8
*Pin 8=RI Short 8-10 *Pin 8=RI Short 8-10
COM5 JP15 COM6 JP17
Pin 1=12V Short 1-3 Pin 1=12V Short 1-3
Pin 1=5V Short 3-5 or 5-7 Pin 1=5V Short 3-5 or 5-7
*Pin 1=DCD Short 7-9 *Pin 1=DCD Short 7-9
Pin 8=12V Short 2-4 Pin 8=12V Short 2-4
Pin 8=5V Short 4-6 or 6-8 Pin 8=5V Short 4-6 or 6-8
*Pin 8=RI Short 8-10 *Pin 8=RI Short 8-10
*: Default settings JP10/11/12/13
135 79
246 810

SBC856A1 Series All-in-One POS Board User’s Manual
Jumpers and Connectors 11
2.3.6 Watchdog Timer Trigger Mode Setting: JP8
The watchdog timer is an indispensable feature of the SBC856A1. It
has a sensitive error detection function and a report function. When the
CPU processing comes to a halt, the watchdog either generates a NMI
or resets the CPU.
Options Setting
NMI Short 1-2
RESET Short 2-3
Disabled (default) Open
123
2.3.7 COM2 RS232/422/485 Settings: JP9, JP10,
JP11
COM2 JP9 JP10 JP11
RS-232 (default) 1-2 3-5, 4-6 3-5, 4-6
RS-422 3-4, 7-8 1-3, 2-4 1-3, 2-4
RS-485 5-6, 7-8 1-3, 2-4 1-3, 2-4
JP9
2
4
6
1
3
5
87
JP10 and JP11
2
4
6
1
3
5
2.3.8 IGA2 TTL/LVDS LCD VDD Selection
(VDD of LCD1 and CN14): JP13
VDDM Settings
5V (TTL default) Short 1-2
3.3V(LVDS default) Short 2-3
JP13
1
2
3

SBC856A1 Series All-in-One POS Board User’s Manual
12 Jumpers and Connectors
2.3.9 IGA1 LVDS LCD VDD Selection (VDD of CN12):
JP12
VDDM Settings
5V Short 1-2
3.3V(LVDS default) Short 2-3
JP12
1
2
3
2.3.10 DiskOnChip/NVRAM Selection JP18,JP19,JP20:
JP18 JP19 JP20
DiskOnChip/Flash Short 1-2 Short 1-2 Short 1-2
NVRAM HK1245 Short 2-3 Short 2-3 Short 2-3
2.4 Connectors
The connectors allow the CPU card to connect with other parts of the
system. Some problems encountered by your system may be a result
from loose or improper connections. Ensure that all connectors are in
place and firmly attached. The following table lists the function of each
connector on the SBC856A1. Their corresponding pin assignments are
described in Chapter 3.
Connectors Label Connectors Label
Keyboard Conntctor CN1 VGA Connector VGA1
Front Panel Bezel CONN. CN2 CPU&SYS FAN
CONN. FAN1,2
Mouse Conntctor CN3 IDE Connector IDE1~IDE2
ATX Connector (AT &ATX) CN4 LCD Connector LCD1
IRDAConnector CN5 Printer Port
Connector LPT1~LPT2
S-ATA1 Connector CN6 LAN RJ45 Connector LAN1
S-ATA2 Connector CN7 System Temperature
Sensor RT1