Advantech PCM-4372 User manual

PCM-4372
VIA EDEN 4" EPIC SBC with
VGA/LCD/LVDS/SATA Ethernet/
USB2.0
User Manual

PCM-4372 User Manual ii
Copyright
This document is copyrighted, © 2007. All rights are reserved. The origi-
nal manufacturer reserves the right to make improvements to the products
described in this manual at any time without notice.
No part of this manual may be reproduced, copied, translated or transmit-
ted in any form or by any means without the prior written permission of
the original manufacturer. Information provided in this manual is
intended to be accurate and reliable. However, the original manufacturer
assumes no responsibility for its use, nor for any infringements upon the
rights of third parties that may result from such use.
Acknowledgements
Award is a trademark of Award Software International, Inc.
VIA is a trademark of VIA Technologies, Inc.
IBM, PC/AT, PS/2 and VGA are trademarks of International Business
Machines Corporation.
Intel and Pentium are trademarks of Intel Corporation.
Microsoft Windows® is a registered trademark of Microsoft Corp.
RTL is a trademark of Realtek Semi-Conductor Co., Ltd.
ESS is a trademark of ESS Technology, Inc.
UMC is a trademark of United Microelectronics Corporation.
SMI is a trademark of Silicon Motion, Inc.
Creative is a trademark of Creative Technology LTD.
CHRONTEL is a trademark of Chrontel Inc.
All other product names or trademarks are properties of their respective
owners.
Part No. 2006437210 Edition 1
Printed in Taiwan May 2007

iii
Warranty
Warranty Period
ADVANTECH aims to meet the customer’s expectations for post-sales
service and support; therefore, in addition to offering 2 years global war-
ranty for ADVANTECH’s standard products, a global extended warranty
service is also provided for customers upon request. ADVANTECH cus-
tomers are entitled to a complete and prompt repair service beyond the
standard 2 years of warranty.
Standard products manufactured by ADVANTECH are covered by a 2
year’s global warranty from the date of shipment. Products covered by
extended warranty and cross-region repair services against defects in
design, materials, and workmanship, are also covered from the date of
shipment. All of key parts assembled into ADVANTECH system prod-
ucts such as LCD, Touch Screen, Power Supply, and peripherals etc, will
be also covered by the standard 2 years of warranty.
Repairs under Warranty
It is possible to obtain a replacement (Cross-Shipment) during the first 30
days of the purchase (45 days for Channel Partners), if the products were
purchased directly from ADVANTECH and the product is DOA (Dead-
on-Arrival).
DOA Cross-Shipment excludes any customized and/or build-to-order
products. The Cross-Shipment agreement signed by customers is required
for initiating/releasing cross shipment with ADVANTECH confirmation
and verification. The only conditions for Cross-Shipment are: a) the
return must not be damaged, altered or marked, b) all parts and accesso-
ries must be included as originally shipped; and c) proof of purchase must
be included. Any returns that do not meet mentioned requirements above,
or any wrong user settings/configurations will be denied, or subject to
additional handling/service charges as determined by the ADVANTECH
Repair Service Department.
For those products which are not DOA, the return fee to an authorized
ADVANTECH repair facility will be at the customers’ expense. The
shipping fee for reconstructive products from ADVANTECH back to
customers’ sites will be at ADVANTECH’s expense.

PCM-4372 User Manual iv
Exclusions from Warranty
The product is excluded from warranty if the product has been found to
be defective after expiry of the warranty period.
Warranty has been voided by removal or alternation of product or part
identification labels.
The product has been misused, abused, or subjected to unauthorized dis-
assembly/modification; placed in an unsuitable physical or operating
environment; improperly maintained by the customer; or failure caused
which ADVANTECH is not responsible whether by accident or other
cause. Such conditions will be determined by ADVANTECH at its sole
unfettered discretion.
The product is damaged beyond repair due to a natural disaster such as a
lighting strike, flood, earthquake, etc.
Product updates/upgrades and tests upon the request of customers who
are without warranty.
FCC
This device complies with the requirements in part 15 of the FCC rules:
Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including inter-
ference that may cause undesired operation
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interfer-
ence when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications.
Operation of this device in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interfer-
ence at his/her own expense. The user is advised that any equipment
changes or modifications not expressly approved by the party responsible
for compliance would void the compliance to FCC regulations and there-
fore, the user’s authority to operate the equipment.

v
For more information about this and other Advantech products, please
visit our website at:
http://www.advantech.com/
http://www.advantech.com/ePlatform/
For technical support and service, please visit our support website at:
http://support.advantech.com.tw/support/
Additional Information and Assistance
1. Visit the Advantech web site at http://www.advantech.com/ where
you can find the latest information about the product.
2. Contact your distributor, sales representative, or Advantech's cus-
tomer service center if you need technical support. Please have the
following information ready before you call:
– Product name and serial number
– Description of your peripheral attachments
– Description of your software (operating system, version, appli-
cation software, etc.)
– A complete description of the problem
– The exact wording of any error messages
Caution! There is a danger of a new battery exploding if it
is incorrectly installed. Do not attempt to
recharge, force open, or heat the battery.
Replace the battery only with the same or equiv-
alent type recommended by the manufacturer.
Discard used batteries according to the manu-
facturer’s instructions.

PCM-4372 User Manual vi
Packing List
Before installation, please ensure the following items have been shipped:
SBCs
Optional accessories
Item Part Number
1 PCM-4372 SBC
1 Startup manual
1 Utility CD
1 mini jumper pack 9689000002
FLAT Cable 50P 20CM 3Com & LPT 1.27mm to D-sub 1700002034
FLAT Cable 44P IDC 44P/44P/40P keyed 50CM 1701440504
Cable 20P/10P 10CM EPIC ATX Power 1700002055
Cable 6pin, 6-pin; 20CM long: PS/2 KB & Mouse 1700060202
CABLE USB*2/10-2.0MM 29CM 1700001267
CABLE Serial ATA 7P/7P 100cm 1700071000
Wire RS-422/485 W/D-SUB COM 4P 15cm 1703040157
Model Number Description
PCM-4372F-S0A1E Eden ULV 1.0GHz w/CF/VGA/LCD/LVDS/SATA
PCM-4372U-S0A1E Eden ULV 1.0GHz w/USB-DOM/VGA/LCD/LVDS/SATA
PCM-4372F-M0A1E Eden 600MHz w/CF/VGA/LCD/LVDS/SATA
PCM-4372F-J0A1E Eden 400MHz w/CF/VGA/LCD/LVDS/SATA
Model Number Description
PCD-USBH1I-MS0256 USB-DOM, 256 MB, -40 ~ 85° C
PCD-USBH1I-MS0512 USB-DOM, 512 MB, -40 ~ 85° C
PCD-USBH1I-MS1024 USB-DOM, 1 GB, -40 ~ 85° C
PCD-USBH1I-MS2048 USB-DOM, 2 GB, -40 ~ 85° C
PCM-410B-00A1E HD Audio/USB module for EPIC
PCM-410-00A1E Audio/USB/COM/LPT daughter board for EPIC

vii
Contents
Chapter 1 General Information ........................................2
1.1 Introduction ....................................................................... 2
1.2 Specifications .................................................................... 2
1.2.1 Functional Specification ................................................. 2
1.2.2 Mechanical Specification................................................ 3
1.2.3 Electrical Specification................................................... 4
1.2.4 Environmental Spec........................................................ 4
Chapter 2 H/W Installation ...............................................6
2.1 Jumpers.............................................................................. 6
2.1.1 Jumper List ..................................................................... 6
Table 2.1 Jumpers..................................................... 6
2.1.2 Jumper Settings............................................................... 6
Table 2.2 Clear CMOS (J2) ...................................... 6
Table 2.3 COM2 Setting (J2).................................... 6
Table 2.4 LVDS0 Power (J3) ................................... 6
Table 2.5 LVDS1 Power (J4) ................................... 6
Table 2.6 PCI VIO Setting (J5) ................................ 7
2.2 Connectors......................................................................... 8
2.2.1 Connector List................................................................. 8
Table 2.7 Connectors ................................................ 8
2.2.2 IDE, CDROM hard drive connector (CN9).................... 9
2.2.3 Solid State Disk .............................................................. 9
2.2.4 Parallel port connector (CN5)......................................... 9
2.2.5 Keyboard and PS/2 mouse connector (CN8)................ 10
2.2.6 Power & HDD LED Connector (CN11)....................... 10
2.2.7 Power connectors.......................................................... 10
2.2.8 COM port connector (CN4, CN5, CN6)....................... 10
Table 2.8 J2: COM2 RS-232/422/485 select.......... 11
2.2.9 VGA/LCD/LVDS interface connections ...................... 11
2.2.10 Ethernet configuration .................................................. 11
2.2.11 Watchdog timer configuration...................................... 12
2.2.12 USB connectors (CN17, CN18, CN27) ........................ 12
2.2.13 GPIO (General Purpose Input Output) (CN2) .............. 12
2.2.14 SATA Connector (SA1, SA2) ...................................... 12
2.3 Mechanical ...................................................................... 13
2.3.1 Jumper and Connector Locations ................................. 13
Figure 2.1 Connectors (component side) ................. 13
Figure 2.2 Connectors (solder side) ......................... 13
2.3.2 Board Dimensions......................................................... 14
Figure 2.3 Board layout: Dimensions (Component
Side)........................................................ 14

PCM-4372 User Manual viii
Figure 2.4 Board layout: Dimensions (Solder Side) 14
Chapter 3 BIOS Settings..................................................16
3.1 BIOS Introduction ........................................................... 16
3.2 BIOS Setup...................................................................... 16
Table 3.1 CONTROL KEYS.................................. 16
3.2.1 Main Menu.................................................................... 17
3.2.2 Standard CMOS Features ............................................. 18
3.2.3 Advanced BIOS Features.............................................. 20
3.2.4 Advanced Chipset Features .......................................... 22
3.2.5 Integrated Peripherals ................................................... 25
3.2.6 Power Management Setup ............................................ 27
3.3 PnP/PCI Configurations .................................................. 30
3.3.1 PC Health Status ........................................................... 31
3.3.2 Frequency/Voltage Control........................................... 32
3.3.3 Load Optimized Defaults.............................................. 33
3.3.4 Set Password ................................................................. 34
3.3.5 Save & Exit Setup......................................................... 36
3.3.6 Quit Without Saving ..................................................... 36
Chapter 4 S/W installation ..............................................40
4.1 S/W Introduction ............................................................. 40
4.2 Driver Installation ........................................................... 40
4.3 SUSI Application Library ............................................... 40
4.3.1 SUSI Introduction ......................................................... 40
4.3.2 SUSI Functions ............................................................. 41
4.3.3 SUSI Sample Programs ................................................ 44
Chapter 5 Installing Extension I/O.................................56
5.1 MIO Introduction ............................................................ 56
5.1.1 M2M concept................................................................ 56
5.1.2 Easy to have wireless technology with your embedded
motherboard .................................................................. 56
5.1.3 The best board combination for a system ..................... 56
Figure 5.1 PCM-4372 + MIO 2320 ......................... 56
5.2 PC/104 Module Introduction........................................... 57
5.3 MIO-USB Introduction ................................................... 57
5.4 Installing SO-DIMM ....................................................... 58
5.5 Optional Modules............................................................ 59
5.5.1 MIO-2310 Wireless module ......................................... 59
5.5.2 MIO-2320 GSM/GPRS module.................................... 59
5.5.3 MIO-3121 Mini-PCI to 4 COMs module ..................... 59
5.5.4 MIO-3140 Mini-PCI to 2 SATA module ..................... 59
5.5.5 MIO-3150 Mini-PCI to Video Capture module ........... 59
Appendix A GPIO & the Watchdog Timer.......................62
A.1 Supported GPIO Register................................................ 62

ix
A.1.1 GPIO Registers ............................................................. 62
A.1.2 GPIO Example program-1 ............................................ 62
Appendix B Pin Assignments .............................................66
B.1 Battery Connector(CN1) ................................................. 66
Table B.1 Battery Connector (CN1)........................ 66
B.2 GPIO Connector(CN2).................................................... 66
Table B.2 GPIO Connector(CN2) ........................... 66
B.3 Power Switch (CN3) ....................................................... 67
Table B.3 Power Switch (CN3)............................... 67
B.4 COM1 (CN4)................................................................... 68
Table B.4 COM1 (CN4).......................................... 68
B.5 COM2/3/4 & LPT(CN5) ................................................. 69
Table B.5 COM2/3/4 & LPT(CN5) ........................ 69
B.6 RS-422/485(CN6) ........................................................... 71
Table B.6 RS-422/485(CN6)................................... 71
B.7 System FAN (CN7)......................................................... 72
Table B.7 System FAN (CN7) ................................ 72
B.8 KB_MS (CN8) ................................................................ 72
Table B.8 KB_MS (CN8)........................................ 72
B.9 IDE0 (CN9)..................................................................... 73
Table B.9 IDE0 (CN9) ............................................ 73
B.10 Compact II W/Ejector (CN10) ........................................ 75
Table B.10 Compact II W/Ejector (CN10) ............... 75
B.11 HD & Power LED (CN11).............................................. 76
Table B.11 HD & Power LED (CN11) ..................... 76
B.12 Inverter Power (CN12).................................................... 77
Table B.12 Inverter Power (CN12) ........................... 77
B.13 LVDS0 Connector (CN13).............................................. 77
Table B.13 LVDS0 Connector (CN13)..................... 77
B.14 VGA Connector (CN14) ................................................. 79
Table B.14 VGA Connector (CN14)......................... 79
B.15 LAN1 (CN15) ................................................................. 79
Table B.15 LAN1 (CN15)......................................... 79
B.16 LAN2 (CN16) ................................................................. 80
Table B.16 LAN2 (CN16)......................................... 80
B.17 USB0/1 (CN17)............................................................... 81
Table B.17 USB0/1 (CN17) ...................................... 81
B.18 USB2/3 & AC97 (AUDIO I/F) (CN18).......................... 82
Table B.18 USB2/3 & AC97 (AUDIO I/F) (CN18) . 82
B.19 USB4/5(MIO-USB) (CN19) ........................................... 83
Table B.19 USB4/5(MIO-USB) (CN19)................... 83
B.20 Inverter Power (CN20).................................................... 83
Table B.20 Inverter Power (CN20) ........................... 83

PCM-4372 User Manual x
B.21 LVDS1 Connector (CN21).............................................. 84
Table B.21 LVDS1 Connector (CN21)..................... 84
B.22 ISA_-5V(CN24).............................................................. 85
Table B.22 ISA_-5V(CN24) ..................................... 85
B.23 ATX Power Connector (CN26)....................................... 86
Table B.23 ATX Power Connector (CN26).............. 86
B.24 USB4/5 (CN27)............................................................... 87
Table B.24 USB4/5 (CN27) ...................................... 87
Appendix C System Assignments .......................................90
C.1 System I/O Ports.............................................................. 90
Table C.1 System I/O ports ..................................... 90
C.2 1st MB memory map....................................................... 91
Table C.2 Table C.2: 1st MB memory map ............ 91
C.3 DMA channel assignments.............................................. 91
Table C.3 DMA channel assignments..................... 91
C.4 Interrupt assignments ...................................................... 92
Table C.4 Interrupt assignments.............................. 92
Appendix D ATX Power setting .........................................94
D.1 D.1 Introduction .............................................................. 94
Table D.1 ATX Power Connector. .......................... 94
Figure D.1 ATX power supply diagram ................... 95

1
CHAPTER
General Information
This chapter gives background infor-
mation on the PCM-4372.
Sections include:
Introduction
Specifications

PCM-4372 User Manual 2
Chapter 1 General Information
1.1 Introduction
The PCM-4372 is an EPIC SBC (Single Board Computer) with a high
performance and lower power based on VIA Eden processors. The PCM-
4372, in conjunction with VIA CX700 chipset, supports processors
clocked at up to 1GHz, four USB 2.0 compatible ports, dual 10/100Base-
T Ethernet interface, 2 Channel LVDS interface, and one MIO expansion
connector (CF or USB-DOM), and can accommodate up to 1GB of ECC
DDR RAM memory. The PCM-4372 also supports two SATA RAID and
four COM ports.
1.2 Specifications
1.2.1 Functional Specification
1.2.1.1 General
•CPU Embedded VIA Eden processor
•System Chipset VIA CX700
•BIOS AWARD® 4 Mbit Flash BIOS
•System Memory 200-pin SODIMM socket, support ECC Double
Data Rate (DDR2) 128 MB to 1 GB, accept 128/256/512/1 GB
DDR 400/533 DRAM
•Power Management APM1.2, ACPI support
•SSD Supports CompactFlash® Card TYPE I/II (shared 1st IDE
Channel) USB memory, uDOC (Optional)
•Watchdog Timer Single chip Watchdog 255-level interval timer,
setup by software
•Expansion Interface Supports 8/16 bit ISA bus for standard PC/
104 device (ITE 8888g), PC/104-Plus
•Battery 2-pin wafer box for external Battery on board I/O
•I/O Interface 1 x EIDE (UDMA 33), 1 x K/B, 1 x KB/mouse, 3 x
RS232, 1 x RS232/422/485, 1 x LPT
•USB 6 x USB 2.0 compliant Ports (2 ports on board connector, 4
ports pinhead)
•Audio CX700 HD 3D surround stereo sound Supports Line -in,
Line-out, Microphone-in (with PCM-410 option)
•IrDA N/A

3 Chapter1
•GPIO 8-bit general purpose input/output Ethernet
•LAN Chipset Intel 82551, 82541PI (Gigabit for optional)
–Speed 10/100 Mbps
–Interface 2 x RJ45
– Standard IEEE 802.3u 100Base-T
1.2.1.2 Display
•Chipset VIA CX700 chip integrated. (Extreme Graphics 2)
•Memory Size Optimized Shared Memory Architecture, supports
up to 64 MB frame buffer using system memory
•Resolution CRT Display mode: pixel resolution up to 1600 x 1200
at 85-Hz and 2048 x 1536 at 75-Hz LCD Display mode: Dual chan-
nel LVDS panel supports up to UXGA panel resolution with fre-
quency range from 25 MHz to 112 MHz
•LCD Interface 2 Channel
– 1 x 24/48-bit LVDS
– 1 x 24/48-bit LVDS
•LVDS Two Hirose connectors support up to 2 channel LVDS LCD
Panel
•Dual Independent CRT + LVDS, LVDS + LVDS (optional)
1.2.2 Mechanical Specification
•Dimensions 164.0 x 115.0 mm
•Height on Top 27.6 mm (The highest point)
•Height on Bottom 6.5 mm (The highest point)
•Heatsink Dimensions 109.0 x 52.0 x 27.6 mm
•Weight with Heatsink 340 g

PCM-4372 User Manual 4
1.2.3 Electrical Specification
• Power Supply Type: AT: 5 V, 12 V; ATX: 5 V, 3.3 V, 5 VSB, 12 V
• Power Consumption: (VIA Eden ULV 1.0 GHz with 256 MB
DDR2 333) Max: 1.83 A @ 5 V, 0.12 A @ 12 V, 0.52 @ 3.3 V
1.2.4 Environmental Spec.
1.2.4.1 Operating temperature
• The VIA EDEN is specified for proper operation when the junction
temperature is within the specified range of 0°C to 100°C.
• The VIA CX700 chipset operating temperature runs at a maximum
of 85°C.
• Operating temperature:0 ~ 60° C (32 ~ 140° F)
1.2.4.2 Operating humidity
• Operating Humidity: 0% ~ 90% Relative Humidity, non-condens-
ing
1.2.4.3 Storage temperature
Standard products (0 ~ 60° C)
Storage temperature: -20 ~ 70° C
Phoenix products (-20 ~ 80° C)
Storage temperature: -20 ~ 80° C
Platinum Phoenix products (-40 ~ 85° C)
Storage temperature: -40 ~ 85° C
1.2.4.4 Storage relative humidity
Standard products (0 ~ 60° C)
Relative Humidity: 95% @ 60° C
Phoenix products (-20 ~ 80° C)
Relative Humidity: 95% @ 60° C
Platinum Phoenix products (-40 ~ 85° C)
Relative Humidity: 95% @ 60° C

2
CHAPTER
H/W Installation
This chapter explains the setup proce-
dures of the PCM-4372 hardware,
including instructions on setting jump-
ers and connecting peripherals,
switches, indicators and mechanical
drawings. Be sure to read all safety
precautions before you begin the
installation procedure.

PCM-4372 User Manual 6
Chapter 2 H/W Installation
2.1 Jumpers
The PCM-4372 has a number of jumpers that allow you to configure your
system to suit your application. The table below lists the functions of the
various jumpers.
2.1.1 Jumper List
2.1.2 Jumper Settings
Table 2.1: Jumpers
Label Function
J1 Clear CMOS
J2 COM2 Setting
J3 LVDS0 Power
J4 LVDS1 Power
J5 PCI VIO Setting
Table 2.2: Clear CMOS (J2)
Setting Function
1-2 Normal
2-3 Clear CMOS
Table 2.3: COM2 Setting (J2)
Setting Function
(1-2) RS232
(3-4) RS485
(5-6) RS422
Table 2.4: LVDS0 Power (J3)
Setting Function
1-2 +5V
2-3 +3.3V
Table 2.5: LVDS1 Power (J4)
Setting Function
1-2 +5V
2-3 +3.3V

7 Chapter2
You may configure your card to match the needs of your application by
setting jumpers. A jumper is a metal bridge used to close an electric cir-
cuit. It consists of two metal pins and a small metal clip (often protected
by a plastic cover) that slides over the pins to connect them. To “close” a
jumper, you connect the pins with the clip. To “open” a jumper, you
remove the clip. Sometimes a jumper will have three pins, labeled 1, 2
and 3. In this case you would connect either pins 1 and 2, or 2 and 3.
The jumper settings are schematically depicted in this manual as follows.
A pair of needle-nose pliers may be helpful when working with jumpers.
If you have any doubts about the best hardware configuration for your
application, contact your local distributor or sales representative before
you make any changes.
Generally, you simply need a standard cable to make most connections.
Table 2.6: PCI VIO Setting (J5)
Setting Function
1-2 +5V
2-3 +3.3V
Warning! To avoid damaging the computer, always turn off
the power supply before setting “Clear CMOS.”
Before turning on the power supply, set the
jumper back to “3.0 V Battery On.”
open closed closed 2-3

PCM-4372 User Manual 8
2.2 Connectors
On-board connectors link the PCM-4372 to external devices such as hard
disk drives, a keyboard, or floppy drives. The table below lists the func-
tion of each of the board’s connectors.
2.2.1 Connector List
Table 2.7: Connectors
Label Function
CN1 Battery Con.
CN2 GPIO
CN3 Power Switch
CN4 COM1
CN5 COM2/3/4 & LPT
CN6 RS-422/485
CN7 System FAN
CN8 KB_MS
CN9 IDE0
CN10 Compact II W/O Ejector
CN11 HD & Power LED
CN12 Inverter Power0
CN13 LVDS0 Connector
CN14 VGA Connector
CN15 LAN1(RJ45)
CN16 LAN2(RJ45)
CN17 USB0/1
CN18 USB2/3 & AC97 (AUDIO I/F)
CN19 USB4/5 (MIO-USB)
CN20 Inverter Power1
CN21 LVDS1 Connector
CN23 PC104/+
CN24 ISA_-5V
CN26 ATX Power Con.
CN27 USB4/5
DIMM1 DDR-SODIMM(RVS)-5.2mm
SA1 SATA1
SA2 SATA2

9 Chapter2
2.2.2 IDE, CDROM hard drive connector (CN9)
The board provides 1 IDE channels which you can attach up to two
Enhanced Integrated Device Electronics hard disk drives or CDROM to
the board’s internal controller. Its IDE controller uses a PCI interface.
This advanced IDE controller supports faster data transfer, PIO mode 4,
Multi-word DMA mode 2 and an UltraDMA-33 interface.
2.2.2.1 Connecting the hard drive
Connecting drives is done in a daisy-chain fashion. This package includes
One 44PIN IDE cable that can connect to 1.8" and 2.5" drives.
1. Connect one end of the cable to Hard Drive connector. Make sure
that the red (or blue) wire corresponds to pin 1 on the connector,
which is labeled on the board (on the right side).
2. Plug the other end of the cable into the Enhanced IDE hard drive,
with pin 1 on the cable corresponding to pin 1 on the hard drive.
(See your hard drive’s documentation for the location of the con-
nector.)
If desired, connect a second drive as described above.
Unlike floppy drives, IDE hard drives can connect to either end of the
cable. If you install two drives, you will need to set one as the master and
one as the slave by using jumpers on the drives. If you install only one
drive, set it as the master.
2.2.3 Solid State Disk
The board provides a CompactFlash™ card type I/II socket.
2.2.3.1 CompactFlash (CN10)
The CompactFlash card shares a secondary IDE channel which can be
enabled/disabled via the BIOS settings.
2.2.4 Parallel port connector (CN5)
Normally, the parallel port is used to connect the card to a printer. The
board includes a multi-mode (ECP/EPP/SPP) parallel port accessed via
CN5 and a 50-pin flat-cable connector. You will need an adapter cable if
you use a traditional DB-25 connector. The adapter cable has a 50-pin
connector on one end, and a DB-25 connector on the other.
The parallel port is designated as LPT1, and can be disabled in the system
BIOS setup.
The parallel port interrupt channel is designated to be IRQ7.
You can select ECP/EPP DMA channel via BIOS setup.

PCM-4372 User Manual 10
2.2.5 Keyboard and PS/2 mouse connector (CN8)
The board provides a keyboard connector that supports both a keyboard
and a PS/2 style mouse. In most cases, especially in embedded applica-
tions, a keyboard is not used. If the keyboard is not present, the standard
PC/AT BIOS will report an error or fail during power-on self-test (POST)
after a reset. The PCM-4372’s BIOS standard setup menu allows you to
select “All, But Keyboard” under the “Halt On” selection. This allows
no-keyboard operation in embedded system applications, without the sys-
tem halting under POST.
2.2.6 Power & HDD LED Connector (CN11)
Next, you may want to install external switches to monitor and control the
board. These features are optional: install them only if you need them.
The Power & HDD LED connector is 4-pin Wafer box connector. It pro-
vides connections for a power and hard disk access indicator.
2.2.6.1 Power & HDD LED Connector(CN11)
The HDD LED indicator for hard disk access is an active low signal (24
mA sink rate). Power supply activity LED indicator.
2.2.6.2 Power Reset button (S1)
Momentarily pressing the reset button will activate a reset. The switch
should be rated for 10 mA, 5 V.
2.2.7 Power connectors
2.2.7.1 Main power connector, +3.3V, +5 V, +12 V (CN26)
Supplies main power to the PCM-4372 (+5 V), and to devices that require
+12 V.
2.2.7.2 Fan power supply connector (CN7)
Provides +5V power supply to CPU cooling fan.
2.2.8 COM port connector (CN4, CN5, CN6)
The PCM-4372 provides 4 serial ports (COM1: RS-232; COM2: RS-232/
422/485) in one DB-9 connector (COM1) and one 50-pin dual-inline,
male header. It provides connections for serial devices (a mouse, etc.) or a
communication network. You can find the pin assignments for the COM
port connector in Appendix C.