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PCM-VDX-1
Product Manual
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WinSystems PCM-VDX-1 Product Manual

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PCM-VDX-1-256
PC/104 Single Board Computer with Vortex86DX Processor
PRODUCT MANUAL
WinSystems, Inc.
715 Stadium Drive Arlington, TX 76011
http://www.winsystems.com
MANUAL REVISION HISTORY
P/N 400-0373-000
Revision Date Code ECO Number
110708 Initial release 110725 110727 110819 111117 120809 140203 ECO 14­140807 14-75

TABLE OF CONTENTS

BEFORE YOU BEGIN 6
Visual Index - Top View (Connectors) 7
Visual Index - Top View (Jumpers & LEDs) 8
Visual Index - Bottom View 9
Jumper Reference 10
INTRODUCTION 11
FEATURES 11
System 12 Memory 12
FUNCTIONALITY 13
I/O Port Map 13 Memory Map 15 Interrupt Map 16 DMA Map 16 Watchdog Timer 17 Real-Time Clock/Calendar 18
CONNECTOR REFERENCE 19
POWER 19
J4 - Power and Reset 19
BATTERY BACKUP 20
J8 - External Battery 20 JP7 - On-board Battery (Enable/Disable) 20
SPEAKER 20
SP1 - Speaker 20
MOUSE 21
J11 - Mouse 21
MULTI-I/O 22
J1 - Multi-I/O (COM1, COM2, Keyboard, LPT) 22
SERIAL 25
J5 (COM3), J6 (COM4) 25
USB 27
J15 - USB 27
PARALLEL ATA 28
J12 - PATA 28
COMPACTFLASH 28
J101 - COMPACTFLASH 28
OPTIONAL SSD 29
JP6 - SSD Enable/Disabled 29
ETHERNET 30
J13 - 10/100 Mbps Ethernet 30
STATUS LED 31
D21 - Status LED 31
DIGITAL I/O 32
J14 - GPIO 32
PC/104 BUS 34
J3, J7 - PC/104 34
MiniPCI 35
J102 - MiniPCI Socket 35
BIOS SUPPLEMENTAL 36
BIOS SETTINGS STORAGE OPTIONS 63
CABLES 64
SOFTWARE DRIVERS 65
SPECIFICATIONS 66
MECHANICAL DRAWING 67
APPENDIX - A 69
BEST PRACTICES 69
WARRANTY INFORMATION 73
This page has been left intentionally blank.

BEFORE YOU BEGIN

WinSystems offers best practice recommendations for using and handling WinSystems embedded PCs. These methods
include valuable advice to provide an optimal user experience and to prevent damage to yourself and/or the product.
YOU MAY VOID YOUR WARRANTY AND/OR DAMAGE AN EMBEDDED PC BY FAILING TO COMPLY WITH THESE
BEST PRACTICES.
Reference Appendix - A for Best Practices.
Please review these guidelines carefully and follow them to ensure you are successfully using your embedded PC.
This product ships with a heat sink. Product warranty is void if the heat sink is removed from the product.
For any questions you may have on WinSystems products, contact our Technical Support Group at (817) 274-7553, Monday
through Friday, between 8 AM and 5 PM Central Standard Time (CST).

Visual Index - Top View (Connectors)

J13
Ethernet
(Port 2)
J6
Serial I/O
(COM4)
J14
GPIO
J12
PATA
J15
USB (0/1/2/3)
J11
Mouse
J8
External Battery
J5
Serial I/O
(COM3)
J1
Multi-I/O
(COM1/2,
Keyboard, LPT)
J3
PC/104 (A/B)
J4
Power and Reset
J7
PC/104 (C/D)
NOTE: The reference line to each component part has been drawn to Pin 1, and is also highlighted with a square, where applicable.

Visual Index - Top View (Jumpers & LEDs)

D15
Activity
Ethernet LED
(Port 2)
JP5
SSD Options
D18
Speed Ethernet
LED
(Port 2)
D14
Link Ethernet
LED
(Port 2)
JP6
SSD Enable/
Disable
D9
PATA Activity
LED
D21
Status LED
JP3
COM4
RS-422/485
Termination
JP1
COM3
RS-422/485
Termination
D5
Power LED
JP7
Battery Enable/
Disable
NOTE: The reference line to each component part has been drawn to Pin 1, and is also highlighted with a square, where applicable.

Visual Index - Bottom View

J101
CompactFlash
J103
Redundancy
(BIOS-Selectable)
J102
MiniPCI
NOTE: The reference line to each component part has been drawn to Pin 1, and is also highlighted with a square, where applicable.

Jumper Reference

NOTE: Jumper Part# SAMTEC 2SN-BK-G is applicable to all jumpers. These are available in a ten piece kit from WinSystems (Part# KIT-JMP-G-200).
JP5 - Solid State Disk Options
JP5
CompactFlash Master (default) 1-2
2 4 6 8 10
□ □ □ □ □
□ □ □ □ □ 1 3 5 7 9
JP1 - COM3, JP3 - COM4
CompactFlash Slave 1 2
Silicon Disk Master 3-4
Silicon Disk Slave 3 4
Silicon Disk Write Protect Enable 5-6
Silicon Disk Read/Write 5 6
Reserved 7-8
Reserved 7 8
Reserved 9-10
Reserved 9 10
JP1
(COM3)
2 4 6 8
□ □ □ □
□ □ □ □ 1 3 5 7
RS-422 Termination and Biasing Resistors
TX (100): Places a 100Ω Resistor across the TX± pair 7-8
RX (100): Places a 100Ω Resistor across the RX± pair 1-2
Places a 100Ω Resistor from +5V to TX+ 5-6
TX/RX(300):
RS-485 Termination and Biasing Resistors
TX (100): Places a 100Ω Resistor across the TX/RX± pair 7-8
TX/RX(300):
Places a 100Ω Resistor between TX± 7-8
Places a 100Ω Resistor from Ground to TX- 3-4
Places a 100Ω Resistor from +5V to TX/RX+ 5-6
Places a 100Ω Resistor between TX/RX± 7-8
Places a 100Ω Resistor from Ground to TX/RX- 3-4
JP3
(COM4)
2 4 6 8
□ □ □ □
□ □ □ □ 1 3 5 7
Revision prior to E PCB products require a wire-wrap jumper from 2-3.
Revision prior to E PCB products require a wire-wrap jumper from 1-4.
Revision prior to E products require a wire-wrap jumper from 1-4.
JP7 - On-board Battery (Enable/Disable)
Master Battery Enable
JP7
□ □ □
1 2 3
Enables On-board Battery* 1-2
Enables External Battery (default) 1 2
NC 2-3
*Applicable to OEM models only.

INTRODUCTION

This manual is intended to provide the necessary information regarding conguration and usage of the PCM-VDX-1-256
single board computer. WinSystems maintains a Technical Support Group to help answer questions not adequately
addressed in this manual. Contact Technical Support at (817) 274-7553, Monday through Friday, between 8 AM and 5 PM
Central Standard Time (CST).

FEATURES

CPU
• 500 MHz DMP Vortex (PCM-VDX-1-256)
Compatible Operating Systems
• Linux, DOS, x86 RTOS
Memory
• 256 MB of DDR2 SDRAM (Soldered)
• 512 MB SSD (Optional on-board Flashdisk)
BIOS
• AMI
Ethernet
• One 10/100 Mbps (using RTL8100C LAN)
Digital I/O
• 16 lines General Purpose Input/Output (GPIO)
Power
• +5V required, 800 mA typical
Serial I/O
• 2 serial ports (RS-232)
• 2 serial ports (RS-232/422/485)
USB
• 4 USB 2.0 ports
PATA
• 1 PATA controller
CompactFlash
• Types I & II
Line Printer Port
• ECP/EPP
Watchdog Timer
• Up to 255 minute reset
Bus Expansion
• PC/104
• MiniPCI
Industrial Operating Temperature
• -40°C to 85°C
Form Factor
• 3.60” x 3.80” (90 mm x 96 mm)
Additional Features
• RoHS compliant
• Real-time clock/calendar
• Activity status LEDs on-board
• PS/2 Keyboard and Mouse

System

The PCM-VDX-1-256 is a fanless PC/104 single board computer (SBC) based upon the ultra low power Vortex86DX
processor. It requires about 4 Watts under full load while operating over an extended temperature range of -40°C to 85°C.
The board has 256 MB soldered on DDR2 SDRAM, Ethernet, USB, serial and parallel I/O, as well as PC/104, MiniPCI
expansion, and optional external battery. This board replaces older generation WinSystems’ and other manufacturers’
386SX, 486DX, 586, and SC520 based SBCs. A 1 GHz model is also available.

Memory

The PCM-VDX-1-256 board is built with 256 MB of SDRAM soldered directly to the PCB. Additionally, 512 MB of
soldered-on ash SSD is optional for this board.

FUNCTIONALITY

I/O Port Map

Following is a list of I/O ports used on the PCM-VDX-1-256. I/O addresses marked with a ** are generally unused and
should be the rst choice in I/O address selection for external I/O boards.
NOTE: The PCM-VDX-1-256 uses a PnP BIOS resource allocation. Care must be taken to avoid contention with resources allocated by the BIOS.
HEX Range Usage
0000h-000Fh DMA 8237-1
0010h-0017h Reserved Redundancy
0018h-001Fh Free
0020h-0021h PIC 8259-1
0022h-0023h 6117D conguration port
0024h-002Dh Free
002Eh-002Fh Forward to LPC BUS
0030h-003Fh Free
0040h-0043h Timer counter 8254
0044h-0047h Free
0048h-004Bh PWM counter 8254
004Ch-004Dh Free
004Eh-004Fh Forward to LPC Bus
0050h-005Fh Free
0060h Keyboard data port
0061h Port B + NMI control port
0062h-0063h 8051 download 4K address counter
0064h Keyboard status port
0065h Watchdog0 reload counter (Vortex internal WD)
0066h 8051 download 8-bit data port
0067h Watchdog1 reload counter (Vortex internal WD)
0068h-006Dh Watchdog1 control register (Vortex internal WD)
006Eh-006Fh Free
0070h-0071h CMOS RAM port
0072h-0075h MTBF counter
0076h-0077h Free
0078h-007Ch GPIO port 0,1,2,3,4 default setup
007Dh-007Fh Free
0080h-008Fh DMA page register
0090h-0091h Free
0092h System control register
0093h-0097h Free
0098h-009Ch GPIO direction control
00A0h-00A1h PIC 8259-2
00A2h-00BFh Free
00C0h-00DFh DMA 8237-2
00E0h-00FFh Free
0100h-0101h GPCS1 default setting address
0102h-016Fh Free
0170h-0177h Reserved IDE1
01E8h-01ECh Reserved
01EDh Status LED
01EEh-01EFh Watchdog Timer Control (Legacy)
HEX Range Usage
01F0h-01EFh IDE0 (IRQ 14)
1F80h-0219h Free
0220h-0227h Free
0228h-02AFh Free
02B0h-02DFh Video Controllers (typically reserved, video)
02E0h-02E7h Free
02E8h-02EFh COM4 (IRQ11) (default)
02F0h-02F7h Free
02F8h-02FFh COM2 (IRQ3) (default)
0300h-0375h Free
0376h IDE1 ATAPI device control write only register
0378h-037Bh LPT Default (IRQ7, DM0) (default)
037Ch-03AFh Free
03B0h-03BBh Video Controllers (typically reserved, video)
03C0h-03DFh Video Controllers (typically reserved, video)
03E0h-03E7h Free
03E8h-03EFh COM3 (IRQ9) (default)
03F0h-03F7h Reserved Legacy Floppy
03F6h IDE0 ATAPI device control write only register
03F8h-03FFh COM1 (IRQ4) (default)
0480h-048Fh DMA High page register
0490h-0499h Instruction counter register
04D0h-04D1h 8259 Edge/level control register
0564h-0568h Advanced Watchdog
0CF8h-0CFFh PCI conguration port
D400h-D4FFh On-board LAN
FC00h-FC05h SPI Flash BIOS control register
FC08h-FC0Dh External SPI Bus control register (output pin congurable GPIO3[0-3])

Memory Map

HEX Range Usage
0000:0000-9000:FFFF System RAM
A000:0000-A000:FFFF EGA/VGA Video Memory
B000:0000-B000:7FFF MDA RAM, Hercules graphics display RAM
B000:8000-B000:FFFF CGA display RAM
C000:0000-C000:7FFF EGA/VGA BIOS ROM
C000:8000-C000:FFFF Boot ROM enable.
D000:0000-D700:FFFF Expansion ROM space.
D800:0000-DB00:FFFF SPI FLASH Emulation Floppy A Enable
DC00:0000-DF00:FFFF Expansion ROM space.
E000:0000-E000:FFFF USB Legacy SCSI ROM space.
F000:0000-F000:FFFF Motherboard BIOS

Interrupt Map

Hardware Interrupts (IRQs) are supported for both PC/104 (ISA) and PCIe devices. The user must reserve IRQs in the
BIOS CMOS conguration for use by legacy devices. The PCIe/PnP BIOS will use unreserved IRQs when allocating
resources during the boot process. The table below lists IRQ resources as used by the PCM-VDX-1-256.
IRQ0 18.2 Hz heartbeat
IRQ1 Keyboard
IRQ2 Chained to Slave controller (IRQ9)
IRQ3 COM2 *
IRQ4 COM1 *
IRQ5 USB/On-board Ethernet
IRQ6 USB
IRQ7 LPT *
IRQ8 Real-Time Clock
IRQ9 COM3 *
IRQ10 Available
IRQ11 COM4 *
IRQ12 Mouse
IRQ13 Floating point processor
IRQ14 IDE
IRQ15 Available
These IRQ references are default settings that can be changed by the user in the CMOS Settings
*
utility. Reference the PCI Congurations section under Advanced Settings.
IRQ9 is commonly used by ACPI when enabled and may be unavailable (depending on operating
**
system) for other uses.
*** IRQ15 is currently unavailable under the Windows operating systems.
Some IRQs can be freed for other uses if the hardware features they are assigned to are not being used. To free an interrupt, use the CMOS setup screens to disable any unused board features or their IRQ assignments.

DMA Map

DMA# Description Usage
DMA0 Available
DMA1 Available
DMA2 Available
DMA3 Available
DMA4 Available
DMA5 Available
DMA6 Available
DMA7 Available

Watchdog Timer

The PCM-VDX-1-256 features an advanced watchdog timer which can be used to guard against software lockups. Two
interfaces are provided to the watchdog timer. The Advanced interface is the most exible and recommended for new
designs. The other interface option is provided for software compatibility with older WinSystems single board computers.
Advanced
The watchdog timer can be enabled in the BIOS Settings by entering a value for Watchdog Timeout on the Chipset →
SouthBridge Conguration screen. Once the operating system is loaded, the watchdog can be disabled or recongured in
the application software.
NOTE: It is recommended that a long timeout be used if the watchdog is enabled when trying to boot any operating
system.
The watchdog can be enabled, disabled or reset by writing the appropriate values to the conguration registers located
at I/O addresses 565h and 566h. The watchdog is enabled by writing a timeout value other than zero to the I/O address
566h and disabled by writing 00h to this I/O address. The watchdog timer is serviced by writing the desired timeout value
to I/O port 566h. If the watchdog has not been serviced within the allotted time, the circuit resets the CPU.
The timeout value can be set from 1 second to 255 minutes. If port 565h bit 7 equals 0, the timeout value written into I/O
address 566h is in minutes. The timeout value written to address 566h is in seconds if port 565 bit 7 equals 1.
Watchdog Timer Examples
Port Address Port Bit 7 Value Port Address Value Reset Interval
565H x 566H 00h DISABLED 565H 1 566H 03h 3 SECONDS 565H 1 566H 1Eh 30 SECONDS 565H 0 566H 04h 4 MINUTES 565H 0 566H 05h 5 MINUTES
Software watchdog timer PET = PORT 566H, write the timeout value.
Legacy
This interface is provided for legacy software support only and is not recommended for new development.
The watchdog can be enabled or disabled via software by writing an appropriate timeout value to I/O port 1EEH. See the
chart provided below.
Port Address Value Reset Interval
1EEH
1EFH ANY RESET TIMER
00h DISABLED 01h 2 SECONDS

Real-Time Clock/Calendar

A real-time clock is used as the AT-compatible clock/calendar. It supports a number of features including periodic and
alarm interrupt capabilities. In addition to the time and date keeping functions, the system conguration is kept in CMOS
RAM contained within the clock section. A battery must be installed for the real-time clock to retain time and date during a
power down.

CONNECTOR REFERENCE

POWER

J4 - Power and Reset

PCB Connector: MOLEX 22-12-2084 (J4) Mating Connector: MOLEX 10-11-2083 (Housing) MOLEX 08-55-0124 (Crimp)
J4
□
1
-12V
2
□
+12V
3
□
+5V
4
□
+5V
5
□
GND
6
□
GND
7
□
GND
8
□
PBRESET
Visual
Index
CBL-174-G-1-1.5
Power is applied to the PCM-VDX-1-256 via the connector at J4. WinSystems offers the cable CBL-174-G-1-1.5 to
simplify this connection.

BATTERY BACKUP

J8 - External Battery

PCB Connector: MOLEX 22-12-2034 (J8) Mating Connector: MOLEX 22-01-3037 (Housing) MOLEX 08-55-0102 (Crimp)
J8
□
1
GND
2
□
+VBAT
3
□
NC
An optional external battery, connected at J8, supplies the PCM-VDX-1-256 board with standby power for the real-time
clock and CMOS setup RAM. An extended temperature lithium battery is available from WinSystems, part number
BAT-LTC-E-36-16-1 or BAT-LTC-E-36-27-1.
A power supervisory circuit contains the voltage sensing circuit and an internal power switch to route the battery
or standby voltage to the circuits selected for backup. The battery automatically switches ON when the VCC of the
systems drops below the battery voltage and back OFF again when VCC returns to normal.
For OEM applications, an on-board battery may be populated. Please contact your WinSystems’ Application Engineer
for additional information.
(For external battery. Provides battery backup to RTC and BIOS CMOS.)
Visual
Index

JP7 - On-board Battery (Enable/Disable)

Master Battery Enable
JP7
□ □ □
1 2 3
Enables On-board Battery* 1-2
Enables External Battery (default) 1 2
NC 2-3
*Applicable to OEM models only.

SPEAKER

SP1 - Speaker

Speaker
An on-board speaker, SP1, is available for sound generation.
Visual
Index

MOUSE

J11 - Mouse

PCB Connector: MOLEX 22-12-2054 (J11) Mating Connector: MOLEX 22-01-2057 (Housing) MOLEX 08-55-0102 (Crimp)
J11
□
1
MSDATA
2
NC
□
3
GND
□
4
VCC
□
5
MSCLK
□
Visual
Index
PS/2 Mouse [6-Position]
CBL-343-G-1-1.375
Pin Description
1 MSDATA 2 NC 3 GND 4 VCC 5 MSCLK 6 N/C
A PS/2 mouse port provides connection for a compatible mouse and is terminated at J11. An adapter cable,
CBL-343-G-1-1.375, is available from WinSystems to simplify the connection. Optionally, a USB mouse can be connected
in addition to, or instead of the standard PS/2 mouse. The pinout for the cable is listed above.

MULTI-I/O

Visual

J1 - Multi-I/O (COM1, COM2, Keyboard, LPT)

PCB Connector: TEKA SRC225C425M126-0 (J1) Mating Connector: ITW-PANCON 050-050-455A (Housing)
The interface to two of the serial ports (COM1/COM2), the printer port and keyboard are all terminated via the connector
at J1. A cable, part number CBL-247-G-1-1.0, is available from WinSystems to adapt to the conventional I/O connectors.
The pinout denition for J1 is listed below.
+5V (KEYBD)
KDATA (KEYBD)
GND (KEYBD)
SLCT (LPT)
PE (LPT)
BUSY (LPT)
ACK (LPT)
PD7 (LPT)
PD6 (LPT)
PD5 (LPT)
PD4 (LPT)
PD3 (LPT)
PD2 (LPT)
PD1 (LPT)
PD0 (LPT)
STROBE (LPT)
RI (COM2)
CTS (COM2)
RTS (COM2)
DSR (COM2)
GND (COM1)
DTR (COM1)
TXD (COM1)
RXD (COM1)
DCD (COM1)
49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1
J1
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
50 48 46 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
Index
Multi-I/O
(KEYBD) +5V
(KEYBD) KCLK
(LPT) GND
(KEYBD) GND
(KEYBD) GND
CBL-247-G-1-1.0
(LPT) GND
(LPT) GND
(LPT) GND
(LPT) GND
(LPT) GND
(LPT) GND
(LPT) INIT
(LPT) GND
(LPT) SLCTIN
(COM2) DTR
(COM2) GND
(LPT) ERROR
(LPT) AUTOFD
(COM2) TXD
(COM2) RXD
(COM2) DCD
(COM1) RI
COM1) CTS
(COM1) RTS
(
(COM1) DSR
COM1
COM2
LPT
PS/2
Keybd
COM1, COM2 [DB9 Male]
Pin RS-232
1 DCD 2 RX 3 TX 4 DTR 5 GND 6 DSR 7 RTS 8 CTR 9 RI
All serial ports are congured as Data Terminal Equipment (DTE). Both the send and receive registers of each port
have a 16-byte FIFO. All serial ports have 16C550-compatible UARTs. The RS-232 transceivers have charge pumps to
generate the plus and minus voltages so the PCM-VDX-1-256 only requires +5V to operate.
Each port is setup to provide internal diagnostics such as loopback and echo mode on the data stream. An independent,
software programmable baud rate generator is selectable from 50 through 115.2 kbps. Individual modem handshake
control signals are supported for all ports.
COM1 and COM2 Conguration Options in BIOS
1. RS-232 Mode
LPT [DB25 Female]
Pin SPP Signal
1 STROBE 2-9 PD0-PD7 10 ACK 11 BUSY 12 PE 13 SLCT 14 AUTOFD 15 ERROR 16 INIT 17 SLCTIN 18-25 GND
The LPT port is a multimode parallel printer port that supports the PS/2 Standard Bidirectional Parallel Port (SPP),
Enhanced Parallel Port (EPP), and Extended Capabilities (ECP) functionality. The output drivers support 8 mA per line.
The printer port can also be used as two additional general-purpose I/O ports if a printer is not required. The rst port is
congured as eight input or output only lines. The other port is congured as ve input and three output lines.
PS/2 Keyboard [6-Position]
Pin Description
1 KD ATA 2 NC 3 GND 4 +5V 5 KCLK 6 NC
This connector supports a PS/2 keyboard interface. The pinout for the cable is listed above.

SERIAL

J5 (COM3), J6 (COM4)

PCB Connector: MOLEX 87832-1006 (J5, J6) Mating Connector: MOLEX 051110-1060 (Housing) MOLEX 50394-8100 (Crimp)
The connectors for COM3 (J5) and COM4 (J6) are listed below.
RS-232
□ □
□ □
□ □
□ □
□ □
10
2
DSR
4
RTS
6
CTC
8
RI
VCC
Pin RS-232 RS-422 RS-485
1 DCD N/A N/A 2 RX TX+ TX/RX+ 3 TX TX- TX/RX- 4 DTR N/A N/A 5 GND GND GND 6 DSR RX+ N/A 7 RTS RX- N/A 8 CTR N/A N/A 9 RI N/A N/A
COM3, COM4 [DB9 Male]
DCD
RXD
TXD
DTR
GND
1
3
5
7
9
Visual
Index
Both ports are congured as Data Terminal Equipment (DTE). Both the send and receive registers of each port have a
16-byte FIFO. All serial ports have 16C550-compatible UARTs. The RS-232 has a charge pump to generate the plus and
minus voltages so the PCM-VDX-1-256 only requires +5V to operate. An independent, software programmable baud rate
generator is selectable from 50 through 115.2 kbps. Individual modem handshake control signals are supported for all
ports.
CBL-SER1-202-12
COM3 and COM4 Conguration Options in BIOS
1. RS-232 Mode
2. RS-422 Mode with RTS transmitter enable
3. RS-422 Mode with auto transmitter enable
4. RS-485 Mode with RTS transmitter enable
5. RS-485 Mode with RTS transmitter enable and echo back
6. RS-485 Mode with auto transmitter enable
7. RS-485 Mode with auto transmitter enable and echo back
Mode(s) Conguration Note
2, 4, 5 Require the RTS bit (MCR Bit 1) to be set in order to transmit.
3, 6, 7 Require TX/RX(300) termination on one node.
4 Requires the RTS (MCR Bit 1) be de-asserted in order to receive.
* Each of the RS-422/RS-485 modes allow for jumper selection of transmit and/or receive termination and
biasing resistor(s). An 8-pin conguration jumper is provided for each port.
Termination Resistors
COM3 = JP1
COM4 = JP3
2 4 6 8
□ □ □ □
□ □ □ □ 1 3 5 7
RS-422 Termination and Biasing Resistors
TX (100): Places a 100Ω Resistor across the TX± pair 7-8
RX (100): Places a 100Ω Resistor across the RX± pair 1-2
Places a 100Ω Resistor from +5V to TX+ 5-6
TX/RX(300):
RS-485 Termination and Biasing Resistors
TX (100): Places a 100Ω Resistor across the TX/RX± pair 7-8
TX/RX(300):
Places a 100Ω Resistor between TX± 7-8
Places a 100Ω Resistor from Ground to TX- 3-4
Places a 100Ω Resistor from +5V to TX/RX+ 5-6
Places a 100Ω Resistor between TX/RX± 7-8
Places a 100Ω Resistor from Ground to TX/RX- 3-4
Revision prior to E PCB products require a wire-wrap jumper from 2-3.
Revision prior to E PCB products require a wire-wrap jumper from 1-4.
Revision prior to E products require a wire-wrap jumper from 1-4.
USB

J15 - USB

PCB Connector: MOLEX 501571-2007 (J15) Mating Connector: MOLEX 501189-2010 (Housing) MOLEX 501193-2000 (Crimp)
USBPWR1
D1-
D1+
GND
2 4 6 8 10 12 14 16 18 20
J15
(USB 0/1/2/3)
□ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ 1 3 5 7 9 11 13 15 17 19
GND
GND
USBPWR3
D3-
D3+
Visual
Index
GND
D0-
D0+
USBPWR0
GND
GND
GND
USBPWR2
D2-
D2+
GND
CBL-USB4-000-14, CBL-USB4-001-12, CBL-USB4-002-12
A USB cable may be attached to the PCM-VDX-1-256 via the connector for a total of four USB 2.0 ports. Adapter
cables CBL-USB4-000-14, CBL-USB4-001-12, and CBL-USB4-002-12 are available from WinSystems for
connection.

PARALLEL ATA

J12 - PATA

PCB Connector: SAMTEC STMM-122-02-G-D-SM-P-TR (J12) Mating Connector: SAMTEC ASP-129789-01
GND
D8
D9
D10
D11
D12
D13
D14
D15
NC
GND
GND
GND
NC
GND
NC
66/100 MHz
A2
HDSC1
GND
VCC
GND
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44
J12
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43
A0
D7
RESET*
D6
D5
D4
D3
D2
D1
D0
GND
DRQ
IOW
IOR
RDY
DACK
IRQ
A1
LED
VCC
GND
HDSC0
The PCM-VDX-1-256 supports the PATA interface at J12 (44-pin primary). WinSystems offers cable CBL-266-G-2-
0.75 to simplify this connection.

COMPACTFLASH

J101 - COMPACTFLASH

Visual Index
Visual
Index
When using a CompactFlash device, Master/Slave selection is made using jumper eld JP5. The PCM-VDX-1-256
supports solid state CompactFlash storage devices for applications where the environment is too harsh for mechanical
hard disks.
The CompactFlash socket at J101 supports modules with TrueIDE support. WinSystems offers industrial grade
CompactFlash modules that provide high performance and extended temperature operation (-40ºC to +85ºC). A PATA
activity LED is present at D9.
The CompactFlash is a PATA device. Use of a CompactFlash device therefore reduces the
number of available PATA devices to one.

OPTIONAL SSD

JP6 - SSD Enable/Disabled

JP6
□ □
□ □
1
2
3
4
SSD Enabled 1-2, 3-4
SSD Disabled 1 2 , 3 4
Optional On-board Flash Disk
The PCM-VDX-1-256M can be populated with an optional on-board Flash disk for rugged OEM applications where a
removal device is not desirable. The Flash disk is connected to the PATA controller but must be enabled by installing
jumpers at JP6 1-2, 3-4. Removing the jumpers at JP6 1 2, and 3 4, effectively removes the device from the PATA bus,
giving the user the ability to connect two additional devices to the PATA controller. Since the on-board Flash disk may co-
exist with another PATA device, it can be set as Master by installing a jumper at JP5 pins 3-4 or Slave when the JP5 pins
3 and 4 are open.
Visual
Index
A jumper at JP5 5-6 write protects the on-board Flash disk. When JP5 pins 5 and 6 are open, read/write access is
available to the on-board Flash disk.
Please contact an Applications Engineer if you are interested in this optional feature.

ETHERNET

J13 - 10/100 Mbps Ethernet

PCB Connector: MOLEX 87832-1006 (J13) MOLEX 51110-1051 (Housing) MOLEX 50394-8100 (Crimp)
10/100 Mbps Ethernet Controllers
The PCM-VDX-1-256 is equipped with a Realtek 8100C Ethernet controller (J13). It provides a standard IEEE 802.3
Ethernet interface for 100/10BASE-T networks.
On-board Ethernet activity LEDs D14, D18 and D15 are provided. See tables below for signal and pin denitions.
LED2
LED0
NC
RX+
TX+
9 7 5 3 1
J13
□ □ □ □ □
□ □ □ □ □
10 8 6 4 2
Visual
Index
LED1
NC
TX-
RX-
NC
LED Color Signal Off-board D14 GREEN LINK LED0 D18 RED SPEED100 LED2 D15 YELLOW ACTIVITY LED1
CBL-ENET1-202-12
CBL-ENET1-203-12

STATUS LED

D21 - Status LED

A status LED is populated on the board at D21 which can be used for any application specic purpose. The LED can
be turned on in software applications by writing a 1 to I/O port 1EDH. The LED can be turned off by writing a 0 to
1EDH. The Activity LED will turn on and off as packets are received and transmitted.
D21 -- GREEN STATUS
Visual
Index

DIGITAL I/O

J14 - GPIO

PCB Connector: MOLEX 501571-3007 (J14) Mating Connector: MOLEX 501189-3010 (Housing) MOLEX 501193-2000 (Crimp)
GPIO_15
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
J14
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □
□ □ □ □ □ □ □ □ □ □ □ □ □ □ □ 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
GPIO_14
CBL-DIO16-000-14
GND
GND
GPIO_2
GPIO_3
GND
GND
GPIO_0
GPIO_1
Visual
Index
CBL-DIO16-001-12
CBL-DIO16-002-12
The PCM-VDX-1-256 Digital I/O consists of sixteen dedicated programmable I/O pins consisting of two individual 8-bit
ports. Each port can be confugred as GPIO or Pulse Width Modulation (PWM) outputs.
All GPIO pins are independent and can be congured as inputs or outputs. When congured as outputs, pins have 8 mA
drive capability and are unterminated. When congured as inputs, pins are pulled-high with a 75k Ω resistance. Each
input pin also supports interrupt triggers.
All PWM pins are independent and can be congured to output a continuous frequency or a xed number of pulses. The
frequency is selected by programming high and low pulse count values. An interrupt can be used to indicate when a
pulse count has completed.
The features are congured and controlled utilizing PCI conguration and I/O access instructions.
Setup GPIO Registers
Port 0 Port 1 Description
Data Register 78H 79H
Direction Register 98H 99H
0: GPIO pin is input mode 1: GPIO pin is output mode
If send value 0FH to port 98H, it means that GPIO port 0 [7-4] are input mode and port[3-0] are output mode.
If send value 00H to port 98H, it means that GPIO port 0 [7-0] are input mode.
If send value FFH to port 98H, it means that GPIO port 0 [7-0] are output mode.
If send value 03H to port 98H, it means that GPIO port 0 [7-2] are input mode and port[1-0] are output mode.
GPIO with Interrupt
The Vortex86DX GPIO ports 0 and 1 support interrupt trigger. To save CPU performance, interrupt can be used instead
of polling GPIO. GPIO port 0 interrupt registers are at offset DCh~DFh south bridge and GPIO1 registers are at offset
E0h~E3h.
Steps to setup GPIO to trigger interrupt:
1. Congure interrupt mask register to determine which GPI can trigger interrupt individually.
2. Set trigger level (high or low) for each GPI.
3. Set period time that interrupt will be generated while the event loading time of any one of GPI[7-0] is longer than the
time parameters.
4. Select IRQ.
5. Set interrupt trigger once or continuously.
For more information on programming GPIO, see Software Drivers & Examples section on our website.

PC/104 BUS

J3, J7 - PC/104

Visual
Index
PCB Connector: TEKA SBL PC232-A-1A7-M (J3) TEKA SBL PC220-A-1A7-M (J7)
The PC/104 bus is electrically equivalent to the 16-bit ISA bus. Standard PC/104 I/O cards can be populated on PCM-
VDX-1-256’s connectors, located at J3 and J7. The interface does not support hot swap capability. The PC/104 bus
connector pin denitions are provided below for reference. Refer to the PC/104 Bus Specication for specic signal
and mechanical specications.
J7
(C/D)
□
□
GND
MEMCS16#
IOCS16#
IRQ10
IRQ11
IRQ12
IRQ15
IRQ14
DACK0#
DRQ0
DACK5#
DRQ5
DACK6#
DRQ6
DACK7#
DRQ7
+5V
MASTER#
GND
GND
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
C0
□
□
C1
□
□
C2
□
□
C3
□
□
C4
□
□
C5
□
□
C6
□
□
C7
□
□
C8
□
□
C9
□
□
C10
□
□
C11
□
□
C12
□
□
C13
□
□
C14
□
□
C15
□
□
C16
□
□
C17
□
□
C18
□
□
C19
# = Active Low Signal
GND
SBHE#
LA23
LA22
LA21
LA20
LA19
LA18
LA17
MEMR#
MEMW#
SD8
SB9
SD10
SD11
SD12
SD13
SD14
SD15
KEY
IOCHK#
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
IOCHRDY
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
GND
(A/B)
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
J3
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
B1
GND
□
B2
RESET
□
B3
+5V
□
B4
IRQ
□
B5
-5V
□
B6
DRQ2
□
B7
-12V
□
B8
SRDY#
□
B9
+12V
□
B10
KEY
□
B11
SMEMW#
□
B12
SMEMR#
□
B13
IOW#
□
B14
IOR#
□
B15
DACK3#
□
B16
DRQ3
□
B17
DACK1#
□
B18
DRQ1
□
B19
REFRESH#
□
B20
BCLK
□
B21
IRQ7
□
B22
IRQ6
□
B23
IRQ5
□
B24
IRQ4
□
B25
IRQ3
□
B26
DACK2#
□
B27
TC
□
B28
BALE
□
B29
+5V
□
B30
OSC
□
B31
GND
□
B32
GND
NOTES:
1. Rows C and D are not required on 8-bit modules.
2. B10 and C19 are key locations. WinSystems uses key pins as connections to GND.
3. Signal timing and function are as specied in ISA specication.
4. Signal source/sink current differ from ISA values.

MiniPCI

J102 - MiniPCI Socket

The PCM-VDX-1-256 includes a MiniPCI socket at J102. Though the socket can support other devices, it is primarily
intended for adding a video module. WinSystems offers MPCI-VGA-Z9S to simplify the connection. Additionally,
wireless activity is optional via MiniPCI.
Visual
Index
MiniPCI Device Interface (CN1)
PIN SIGNAL PIN SIGNAL PIN SIGNAL PIN SIGNAL
1 N/C 2 N/C 63 3.3V 64 FRAME#
KEY KEY 65 CLKRUN# 66 TRDY#
3 N/C 4 N/C 67 SERR# 68 STOP#
5 N/C 6 N/C 69 GROUND 70 3.3V
7 N/C 8 N/C 71 PERR# 72 DEVSEL#
9 N/C 10 N/C 73 C/BE(1)# 74 GROUND
11 N/C 12 N/C 75 AD(14) 76 AD(15)
13 N/C 14 N/C 77 GROUND 78 AD(13)
15 N/C 16 RESERVED 79 AD(12) 80 AD(11)
17 INTB# 18 5V 81 AD(10) 82 GROUND
19 3.3V 20 INTA# 83 GROUND 84 AD(09)
21 RESERVED 22 RESERVED 85 AD(08) 86 C/BE(0)#
23 GROUND 24 3.3V AUX 87 AD(07) 88 3.3V
25 CLK 26 RST# 89 3.3V 90 AD(06)
27 GROUND 28 3.3V 91 AD(05) 92 AD(04)
29 REQ# 30 GNT# 93 RESERVED 94 AD(02)
31 3.3V 32 GROUND 95 AD(03) 96 AD(00)
33 AD(31) 34 PME# 97 5V 98 RESERVED_WIP
35 AD(29) 36 RESERVED 99 AD(01) 100 RESERVED_WIP
37 GROUND 38 AD(30) 101 GROUND 102 GROUND
39 AD(27) 40 3.3V 103 N/C 104 M66EN
41 AD(25) 42 AD(28) 105 N/C 106 N/C
43 RESERVED 44 AD(26) 107 N/C 108 N/C
45 C/BE(3)# 46 AD(24) 109 N/C 110 N/C
47 AD(23) 48 IDSEL 111 N/C 11 2 RESERVED_WIP5
49 GROUND 50 GROUND 11 3 N/C 114 GROUND
51 AD(21) 52 AD(22) 115 N/C 11 6 N/C
53 AD(19) 54 AD(20) 117 N/C 11 8 N/C
55 GROUND 56 PAR 11 9 N/C 120 N/C
57 AD(17) 58 AD(18) 121 RESERVED 122 N/C
59 C/BE(2)# 60 AD(16) 123 N/C 124 3.3V AUX
61 IRDY# 62 GROUND
5
5

BIOS SUPPLEMENTAL

Visual
Index
General Information
The PCM-VDX-1-256 includes an AMI BIOS to assure full compatibility with PC operating systems and software. The
basic system conguration is stored in battery backed CMOS RAM within the clock/calendar. As an alternative, the
BIOS conguration may be stored in internal Flash for operation without a battery. For more information on CMOS
conguration, see the BIOS Settings Storage Options section of this manual.
Entering Setup
To enter setup, power up the computer and press Delete to enter the setup menu. It may take a few seconds before the
main setup menu screen is displayed.
Navigation of the Menus
Use the Up and Down arrow keys to move among the selections and press Enter when a selection is highlighted to
enter a sub-menu or to see a list of choices. Following are images of each menu screen in the default conguration
along with a brief description of each option where applicable. Available options are listed in reference tables. Menu
values shown in bold typeface are factory defaults.
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Main Menu
System Overview
Processor
Vortex86DX A9121
Speed: 500 MHz
System Memory
Size: 256 MB
Speed: 266 MHz
System Time [05:09:58]
System Date: [Tue 08/12/2010]
Each available option is listed in detail in the following sections.
Navigation to the screens is located at the top of each screen’s layout.
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced
Advanced Settings
WARNING: Setting wrong values in below sections may cause system to malfunction.
> CPU Conguration
> IDE Conguration
> Remote Access Conguration
> USB Conguration
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > CPU Conguration
Module Version - 00.01
Manufacturer: DMP
Brand String: Vortex86DX A9121
Frequency: 500 MHz
L1 Cache Enabled
Options:
Disabled Enabled
Cache L1: 16 KB
L2 Cache Write-Thru
Options:
Disabled Write-Thru Write-Back
Fetch Line Size 4 DWORD
Options:
4 DWORD 8 DWORD
Cache L2: 256 KB
CPU Speed Setting By Divide By 1
Options:
Divide By 1 Divide By 2 Divide By 3 Divide By 4 Divide By 5 Divide By 8 Divide By 16 Divide By 32
CPU Fast Decode Onboard Cycle Normal
Options:
Normal Fast
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > IDE Conguration
Onboard PCI IDE Controller Primary
Options:
Disabled Primary
> Primary IDE Master Auto*
> Primary IDE Slave Auto*
*Standard devices are automatically detected.
Hard Disk Write Protect Disabled
Options:
Disabled Enabled
IDE Detect Time Out (Sec) 35
Options:
0 5 10 15 20 25 30 35
ATA(PI) 80Pin Cable Detection Host & Device
Options:
Host & Device Host Device
Hard Disk Delay 2 Second
Options:
Disabled 1 Second 2 Second 4 Second 8 Second
OnBoard IDE Operate Mode Legacy Mode
Options:
Legacy Mode Native Mode
Standard IDE Compatible Disabled
Options:
Disabled Enabled
Options:
Disabled Write Through Write Protect Write Back
More Cache Memory options are continued on the next page.
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > IDE Conguration > Primary IDE Master
Device: Auto-Detected
Type Auto
Options:
Not Installed Auto CD/DVD ARMD
LBA/Large Mode Auto
Options:
Disabled Auto
Block (Multi-Sector Transfer) Auto
Options:
Disabled Auto
PIO Mode Auto
Options:
Auto 0 1 2 3 4
DMA Mode Auto
Options:
Auto SWDMA0 SWDMA1 SWDMA2 MWDMA0 MWDMA1 MWDMA2 UDMA0 UDMA1 UDMA2
S.M.A.R.T. Auto
Options:
Auto Disabled Enabled
32Bit Data Transfer Enabled
Options:
Disabled Enabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > IDE Conguration > Primary IDE Slave
Device: Auto-Detected
Type Auto
Options:
Not Installed Auto CD/DVD ARMD
LBA/Large Mode Auto
Options:
Disabled Auto
Block (Multi-Sector Transfer) Auto
Options:
Disabled Auto
PIO Mode Auto
Options:
Auto 0 1 2 3 4
DMA Mode Auto
Options:
Auto SWDMA0 SWDMA1 SWDMA2 MWDMA0 MWDMA1 MWDMA2 UDMA0 UDMA1 UDMA2
S.M.A.R.T. Auto
Options:
Auto Disabled Enabled
32Bit Data Transfer Enabled
Options:
Disabled Enabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > Remote Access Conguration
Congure Remote Access type and parameters
Remote Access Disabled
Options:
Disabled Enabled
The following selections are available only with Remote Access enabled.
Serial Port number COM1
Options:
COM1 COM2 COM3 COM4
Base Address, IRQ 3F8h, 4
Serial Port Mode 115200 8,n,1
Options:
115200 8,n,1 57600 8,n,1 38400 8,n,1 19200 8,n,1 09600 8,n,1
Flow Control None
Options:
None Hardware Software
Redirection After BIOS POST Always
Options:
Disabled Boot Loader Always
Terminal Type ANSI
Options:
ANSI VT100 VT-UTF8
VT-UTF8 Combo Key Support Enabled
Options:
Disabled Enabled
Sredir Memory Display Delay No Delay
Options:
No Delay Delay 1 Sec Delay 2 Sec Delay 4 Sec
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Advanced > USB Conguration
Module Version - 2.24.2-13.4
USB Devices Enabled Auto-Detected
USB Port 0,1 Enabled
Options:
Enabled Disabled
USB Port 2,3 Enabled
Options:
Enabled Disabled
USB 2.0 Controller Mode HiSpeed
Options:
FullSpeed HiSpeed
BIOS EHCI Hand-Off Enabled
Options:
Disabled Enabled
USB Beep Message Enabled
Options:
Disabled Enabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
PCIPnP
Advanced PCI/PnP Settings
Warning: Setting wrong values in below sections may cause system to malfunction.
Plug & Play O/S No
Options:
No Yes
PCI Latency Timer 128
Options:
32 64 96 128 160 192 224 248
Allocate IRQ to PCI VGA No
Options:
Yes No
Palette Snooping Disabled
Options:
Disabled Enabled
PCI IDE BusMaster Enabled
Options:
Disabled Enabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
PCIPnP (cont’d)
IRQ3 Reserved
Options:
Available Reserved
IRQ4 Reserved
Options:
Available Reserved
IRQ5 Available
Options:
Available Reserved
IRQ6 Available
Options:
Available Reserved
IRQ7 Available
Options:
Available Reserved
IRQ9 Available
Options:
Available Reserved
IRQ10 Available
Options:
Available Reserved
IRQ11 Available
Options:
Available Reserved
IRQ12 Available
Options:
Available Reserved
IRQ15 Available
Options:
Available Reserved
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
PCIPnP (cont’d)
DMA Channel 0 Available
Options:
Available Reserved
DMA Channel 1 Available
Options:
Available Reserved
DMA Channel 3 Available
Options:
Available Reserved
DMA Channel 5 Available
Options:
Available Reserved
DMA Channel 6 Available
Options:
Available Reserved
DMA Channel 7 Available
Options:
Available Reserved
Reserved Memory Size Disabled
Options:
Disabled 16k 32k 64k
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Boot
Boot Settings
> Boot Settings Conguration
1st Boot Device Disabled
The PCM-VDX-1-256 BIOS will not display devices which are not connected, regardless of their location in the boot order.
The boot order can be adjusted by connecting ALL the desired media devices, setting the boot order and then selecting
Save Custom Defaults.
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Boot > Boot Settings Conguration
Boot Settings Conguration
Quick Boot Enabled
Options:
Disabled Enabled
Quiet Boot Disabled
Options:
Disabled Enabled
Bootup Num-Lock On
Options:
Off On
PS/2 Mouse Support Auto
Options:
Disabled Enabled Auto
Interrupt 19 Capture Enabled
Options:
Disabled Enabled
Boot From LAN Disabled
Options: Disabled Used INT 18h Used INT 19h PnP/BEV(BBS) RPL
Beep Function Disabled
Options:
Enabled Disabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Security
Supervisor Password Is: Not Installed
User Password Is: Not Installed
Change Supervisor Password
Change User Password
Boot Sector Virus Protection Disabled
Options:
Disabled Enabled
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset
Advanced Chipset Settings
Warning: Setting wrong values in below sections may cause system to malfunction.
> NorthBridge Conguration
> SouthBridge Conguration
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > NorthBridge Chipset Conguration
DRAM Timing Setting By BIOS
Options:
Manual BIOS
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration
P.O.S.T. Forward To Disabled
Options:
Disabled COM1
> ISA Conguration
> Serial/Parallel Port Conguration
> WatchDog Conguration
> Multi-Function Port Conguration
> Redundancy Control Conguration
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration > ISA Conguration
ISA Clock 8.3MHz
Options:
8.3MHz
16.6MHz
ISA 16bits I/O wait-state 1 clock
Options:
1 clock 2 clock 3 clock 4 clock 5 clock 6 clock 7 clock 8 clock
ISA 8bits I/O wait-state 4 clock
Options:
1 clock 2 clock 3 clock 4 clock 5 clock 6 clock 7 clock 8 clock
ISA 16bits Memory wait-state 1 clock
Options:
0 clock 1 clock 2 clock 3 clock 4 clock 5 clock 6 clock 7 clock
ISA 8bits Memory wait-state 4 clock
Options:
1 clock 2 clock 3 clock 4 clock 5 clock 6 clock 7 clock 8 clock
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration > Serial/Parallel Port Conguration
SB Serial Port 1 3F8
Options:
Disabled 3F8 2F8 3E8 2E8
Serial Port IRQ 1 IRQ 4
Options: IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15
Serial Port Baud Rate 115200 BPS
Options:
2400 BPS 4800 BPS 9600 BPS 19200 BPS 38400 BPS 57600 BPS 115200 BPS
SB Serial Port 2 2F8
Options:
Disabled 3F8 2F8 3E8 2E8
Serial Port IRQ 2 IRQ3
Options: IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15
Serial Port Baud Rate 115200 BPS
Options:
2400 BPS 4800 BPS 9600 BPS 19200 BPS 38400 BPS 57600 BPS 115200 BPS
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
Serial/Parallel Port Conguration (cont’d)
SB Serial Port 3 3E8
Options:
Disabled 3E8 2E8 3A8 2A8
Serial Port IRQ 3 IRQ 9
Options: IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15
Serial Port Baud Rate 115200 BPS
Options:
2400 BPS 4800 BPS 9600 BPS 19200 BPS 38400 BPS 57600 BPS 115200 BPS
SB Serial Port 4 2E8
Options:
Disabled 3E8 2E8 3A8 2A8
Serial Port IRQ 4 IRQ11
Options: IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15
Serial Port Baud Rate 115200 BPS
Options:
2400 BPS 4800 BPS 9600 BPS 19200 BPS 38400 BPS 57600 BPS 115200 BPS
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
Serial/Parallel Port Conguration (cont’d)
SB Parallel Port Address 378
Options:
Disabled 378 278
Parallel Port Mode EPP 1.7 AND SPP
Options: BPP EPP 1.9 AND SPP ECP ECP AND EPP 1.9 SPP EPP 1.7 AND SPP ECP AND EPP 1.7
Parallel Port IRQ IRQ7
Options:
IRQ5 IRQ7
SB Serial Port 1 Mode RS232
SB Serial Port 2 Mode RS232
SB Serial Port 3 Mode RS232
Options:
RS232 RS422 RTS RS422 AUTO RS485 RTS RS485 RTS+ECHO RS485 AUTO RS485 AUTO+ECHO
SB Serial Port 4 Mode RS232
Options:
RS232 RS422 RTS RS422 AUTO RS485 RTS RS485 RTS+ECHO RS485 AUTO RS485 AUTO+ECHO
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
WatchDog Conguration
Watchdog Timer 0
Options:
0 2 Sec 20 Sec 200 Sec
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
Multi-Function Port Conguration
Port0 Function GPIO
Options:
GPIO 8051 P0 PWM00..PWM07
Port0 Bit0 Direction IN
Options:
IN OUT
Port0 Bit1 Direction IN
Options:
IN OUT
Port0 Bit2 Direction IN
Options:
IN OUT
Port0 Bit3 Direction IN
Options:
IN OUT
Port0 Bit4 Direction IN
Options:
IN OUT
Port0 Bit5 Direction IN
Options:
IN OUT
Port0 Bit6 Direction IN
Options:
IN OUT
Port0 Bit7 Direction IN
Options:
IN OUT
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
Multi-Function Port Conguration (cont’d)
Port1 Function GPIO
Options:
GPIO 8051 P1 PWM08..PWM15
Port1 Bit0 Direction IN
Options:
IN OUT
Port1 Bit1 Direction IN
Options:
IN OUT
Port1 Bit2 Direction IN
Options:
IN OUT
Port1 Bit3 Direction IN
Options:
IN OUT
Port1 Bit4 Direction IN
Options:
IN OUT
Port1 Bit5 Direction IN
Options:
IN OUT
Port1 Bit6 Direction IN
Options:
IN OUT
Port1 Bit7 Direction IN
Options:
IN OUT
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Chipset > SouthBridge Chipset Conguration >
Redundancy Control Conguration
Dual Port 4KB SRAM Disabled
Options:
Enabled Disabled
Invalid OPCODE Condition Disabled
Options:
Disabled Enabled
KB/MS System Fail Normal
Options:
Normal TRI-State
GPIO PORT0 System Fail Normal
Options:
Normal TRI-State
GPIO PORT1 System Fail Normal
Options:
Normal TRI-State
LPT PORT System Fail Normal
Options:
Normal TRI-State
UART1 System Fail Normal
Options:
Normal TRI-State
UART2 System Fail Normal
Options:
Normal TRI-State
UART3 System Fail Normal
Options:
Normal TRI-State
UART4 System Fail Normal
Options:
Normal TRI-State
Note: Defaults are indicated in bold for BIOS properties. Default options that cannot be user-modied are indicated with grey text.
Exit
Save Changes and Exit
Discard Changes and Exit
Discard Changes
Load Factory Defaults
Save Custom Defaults
Load Custom Defaults

BIOS SETTINGS STORAGE OPTIONS

CMOS Storage Locations
The PCM-VDX-1-256’s BIOS conguration is stored in three (3) locations:
(1) CMOS RAM (nonvolatile if battery backed)
(2) FLASH PROM (nonvolatile storage for factory defaults)
(3) Internal Flash (for custom settings)
Saving the CMOS Conguration
The Real-Time Clock and the CMOS RAM settings can be maintained by an optional battery when the board is powered
off. When the external battery is used, simply disconnect the battery from J8 for 20 seconds. When an optional on-board
battery is used, it can be enabled or disabled at JP7. A battery is always required to maintain time and date functions when
the board is powered off.
Master Battery Enable
JP7
□ □ □ 1 2 3
Enables On-board Battery* 1-2
Enables External Battery (default) 1 2
NC 2-3
*Applicable to OEM models only.

CABLES

Part Number Description
CBL-SET-373-G-1 Cable set for PCM-VDX-1-256 includes:
CBL-174-G-1-1.5 18-in., 8-wire power cable
CBL-247-G-1-1.0 1-ft., Multi-I/O adapter
CBL-SER1-202-12 Serial I/O Cable (COM3/COM4)
CBL-USB4-002-12 4x USB ports to two, 2-mm 2x4 connectors
ADP-IO-USB-001 Dual 8-pin, 2-mm. 4 USB ports
CBL-ENET1-202-12 Ethernet Cable with RJ-45 Jack
BAT-LTC-E-36-16-1 External 3.6V, 1600 mAH battery with plug-in connector
CBL-SET-373-G-MIN Minimal Cable set for PCM-VDX-1-256 includes:
CBL-174-G-1-1.5 18-in., 8-wire power cable
CBL-247-G-1-1.0 1-ft., Multi-I/O adapter
BAT-LTC-E-36-16-1 External 3.6V, 1600 mAH battery with plug-in connector
Additional Cables
CBL-174-G-1-1.5 18-in., 8-wire Power Cable
CBL-343-G-1-1.375 PS/2 Mouse Adapter
CBL-247-G-1-1.0 1-ft., Multi-I/O adapter
CBL-266-G-2-0.75 44-pin, IDE Socket Cable
CBL-DIO16-000-14 DIO Cable - Unterminated Cable
CBL-DIO16-001-12 DIO Cable with 2x_15-pin with Pico-Clasp™ connector
CBL-DIO16-002-12 DIO Cable with 2x_15-pin 0.100 center keyed female connector
CBL-ENET1-202-12 Ethernet Cable with RJ-45 Jack
CBL-ENET1-203-12 Ethernet Cable with RJ-45 Plug
CBL-SER1-202-12 Serial I/O Cable (COM3/COM4)
CBL-USB4-000-14 4x USB ports - Unterminated
CBL-USB4-001-12 4x USB ports two, 2x20-pin Pico-Clasp™ connector
CBL-USB4-002-12 4x USB ports to two, 2-mm 2x4 connectors
See the WinSystems website.

SOFTWARE DRIVERS

Electrical
VCC +5VDC ±5%
MTBF 11.9 years
Mechanical
Dimensions 3.6” x 3.8” (90 mm x 96 mm)
Weight 3.6 oz (102g)
Environmental
Operating Temperature -40°C to 85°C

SPECIFICATIONS

Typical 800 mA

MECHANICAL DRAWING

APPENDIX - A

BEST PRACTICES
POWER SUPPLY
The power supply and how it is connected to the Single Board Computer (SBC) is very important.
Avoid Electrostatic Discharge (ESD)
Only handle the SBC and other bare electronics when electrostatic discharge (ESD) protection is in place. Having a wrist strap and a fully grounded workstation is the minimum ESD protection required before the ESD seal on the product bag is broken.
Power Supply Budget
Evaluate your power supply budget. It is usually good practice to budget 2X
the typical power requirement for all of your devices.
Zero-Load Power Supply
Use a zero-load power supply whenever possible. A zero-load power supply does not require a minimum power load to regulate. If a zero-load power supply is not appropriate for your application, then verify that the single board computer’s typical load is not lower than the power supply’s minimum load. If the single board computer does not draw enough power to meet the power supply’s minimum load, then the power supply will not regulate properly and can cause damage to the SBC.
Use Proper Power Connections (Voltage)
When verifying the voltage, you should always measure it at the power connector on the SBC. Measuring at the power supply does not account for voltage drop through the wire and connectors.
The single board computer requires +5V (±5%) to operate. Verify the power connections. Incorrect voltages can cause catastrophic damage.
Populate all of the +5V and ground connections. Most single board computers will have multiple power and ground pins, and all of them should be populated. The more copper connecting the power supply to the single board computer the better.
Adjusting Voltage
If you have a power supply that will allow you to adjust the voltage, it is a good idea to set the voltage at the power connector of the SBC to 5.1V. The SBC can tolerate up to 5.25V, so setting your power supply to provide 5.1V is safe and allows for a small amount of voltage drop that will occur over time as the power supply ages and the connector contacts oxidize.
Power Harness
Minimize the length of the power harness. This will reduce the amount of voltage drop between the power supply and the single board computer.
Gauge Wire
Use the largest gauge wire that you can. Most connector manufacturers have a maximum gauge wire they recommend for their pins. Try going one size larger; it usually works and the extra copper will help your system perform properly over time.
Contact Points
WinSystems’ boards mostly use connectors with gold nish contacts. Gold nish contacts are used exclusively on high speed connections. Power and lower speed peripheral connectors may use a tin nish as an alternative
contact surface. It is critical that the contact material in the mating connectors is matched properly (gold to gold and tin to tin). Contact areas made with dissimilar metals can cause oxidation/corrosion resulting in unreliable connections.
Pin Contacts
Often the pin contacts used in cabling are not given enough attention. The ideal choice for a pin contact would include a design similar to Molex’s or Trifurcons’ design, which provides three distinct points to maximize the contact area and improve connection integrity in high shock and vibration applications.
POWER DOWN
Make sure the system is completely off/powered down before connecting anything.
Power Supply OFF
The power supply should always be off before it is connected to the single board computer.
I/O Connections OFF
I/O Connections should also be off before connecting them to the single board computer or any I/O cards. Connecting hot signals can cause damage whether the single board computer is powered or not.
MOUNTING AND PROTECTING THE SINGLE BOARD COMPUTER
Do Not Bend or Flex the SBC
Never bend or ex the single board computer. Bending or exing can cause
irreparable damage. Single board computers are especially sensitive to
exing or bending around Ball-Grid-Array (BGA) devices. BGA devices are extremely rigid by design and exing or bending the single board computer
can cause the BGA to tear away from the printed circuit board.
Mounting Holes
The mounting holes are plated on the top, bottom and through the barrel of the hole and are connected to the single board computer’s ground plane. Traces are often routed in the inner layers right below, above or around the mounting holes.
Never use a drill or any other tool in an attempt to make the holes larger.
Never use screws with oversized heads. The head could come in contact with nearby components causing a short or physical damage.
Never use self-tapping screws; they will compromise the walls of the mounting hole.
Never use oversized screws that cut into the walls of the mounting holes.
Always use all of the mounting holes. By using all of the mounting holes you will provide the support the single board computer needs to prevent bending or
exing.
MOUNTING AND PROTECTING THE SINGLE BOARD COMPUTER (continued)
Plug or Unplug Connectors Only on Fully Mounted Boards
Never plug or unplug connectors on a board that is not fully mounted. Many
of the connectors t rather tightly and the force needed to plug or unplug them could cause the single board computer to be exed.
Avoid cutting of the SBC
Never use star washers or any fastening hardware that will cut into the single board computer.
Avoid Overtightening of Mounting Hardware
Causing the area around the mounting holes to compress could damage interlayer traces around the mouting holes.
Use Appropriate Tools
Always use tools that are appropriate for working with small hardware. Large tools can damage components around the mounting holes.
Placing the SBC on Mounting Standoffs
Be careful when placing the single board computer on the mounting standoffs. Sliding the board around until the standoffs are visible from the top can cause component damage on the bottom of the single board computer.
Avoid Conductive Surfaces
Never allow the single board computer to be placed on a conductive surface. Almost all single board computers use a battery to backup the clock-calendar and CMOS memory. A conductive surface such as a metal bench can short the battery causing premature failure.
ADDING PC/104 BOARDS TO YOUR STACK
Be careful when adding PC/104 boards to your stack.
Never allow the power to be turned on when a PC/104 board has been improperly plugged onto the stack. It is possible to misalign the PC/104 card and leave a row of pins on the end or down the long side hanging out of the connector. If power is applied with these pins misaligned, it will cause the I/O board to be damaged beyond repair.
OPERATIONS / PRODUCT MANUALS
Every single board computer has an Operations manual or Product manual.
Manual Updates
Operations/Product manuals are updated often. Periodicially check the WinSystems website (http://www.winsystems.com) for revisions.
Check Pinouts
Always check the pinout and connector locations in the manual before plugging in a cable. Many single board computers will have identical headers for different functions and plugging a cable into the wrong header can have disastrous results.
Contact an Applications Engineer with questions
If a diagram or chart in a manual does not seem to match your board, or if you have additional questions, contact your Applications Engineer.

WARRANTY INFORMATION

(http://www.winsystems.com/company/warranty.cfm)
WinSystems warrants to Customer that for a period of two (2) years from the date of shipment any Products and Software
purchased or licensed hereunder which have been developed or manufactured by WinSystems shall be free of any
material defects and shall perform substantially in accordance with WinSystems’ specications therefore. With respect
to any Products or Software purchased or licensed hereunder which have been developed or manufactured by others,
WinSystems shall transfer and assign to Customer any warranty of such manufacturer or developer held by WinSystems,
provided that the warranty, if any, may be assigned. Notwithstanding anything herein to the contrary, this warranty granted
by WinSystems to the Customer shall be for the sole benet of the Customer, and may not be assigned, transferred or
conveyed to any third party. The sole obligation of WinSystems for any breach of warranty contained herein shall be, at its
option, either (i) to repair or replace at its expense any materially defective Products or Software, or (ii) to take back such
Products and Software and refund the Customer the purchase price and any license fees paid for the same. Customer
shall pay all freight, duty, broker’s fees, insurance charges for the return of any Products or Software to WinSystems
under this warranty. WinSystems shall pay freight and insurance charges for any repaired or replaced Products or
Software thereafter delivered to Customer within the United States. All fees and costs for shipment outside of the United
States shall be paid by Customer. The foregoing warranty shall not apply to any Products of Software which have been
subject to abuse, misuse, vandalism, accidents, alteration, neglect, unauthorized repair or improper installations.
THERE ARE NO WARRANTIES BY WINSYSTEMS EXCEPT AS STATED HEREIN, THERE ARE NO OTHER
WARRANTIES EXPRESS OR IMPLIED INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IN NO EVENT SHALL WINSYSTEMS BE LIABLE
FOR CONSEQUENTIAL, INCIDENTIAL OR SPECIAL DAMAGES INCLUDING, BUT NOT LIMITED TO, DAMAGES
FOR LOSS OF DATA, PROFITS OR GOODWILL. WINSYSTEMS’ MAXIMUM LIABILITY FOR ANY BREACH OF
THIS AGREEMENT OR OTHER CLAIM RELATED TO ANY PRODUCTS, SOFTWARE, OR THE SUBJECT MATTER
HEREOF, SHALL NOT EXCEED THE PURCHASE PRICE OR LICENSE FEE PAID BY CUSTOMER TO WINSYSTEMS
FOR THE PRODUCTS OR SOFTWARE OR PORTION THEREOF TO WHICH SUCH BREACH OR CLAIM PERTAINS.
WARRANTY SERVICE
1. To obtain service under this warranty, obtain a return authorization number. In the United States, contact the
WinSystems’ Service Center for a return authorization number. Outside the United States, contact your local sales agent
for a return authorization number.
2. You must send the product postage prepaid and insured. You must enclose the products in an anti-static bag
to protect from damage by static electricity. WinSystems is not responsible for damage to the product due to static
electricity.
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