VersaLogic Fox (VL-EPM-19) Reference guide

Brand: VersaLogic

Model: Fox (VL-EPM-19)

Type: Reference guide

Hardware

Reference

Manual

REV. April 2021

Fox

(VL-EPM-19)

DMP Vortex86DX2 SoC-based

SBC with dual Ethernet, Video,

USB, SATA, Counter/Timers,

Mini PCIe, microSD, GPIO,

SPX, and PC/104-Plus Interface

EPM-19 Hardware Reference Manual ii

WWW.VERSALOGIC.COM

12100 SW Tualatin Road

Tualatin, OR 97062-7341

(503) 747-2261

Fax (971) 224-4708

Notice:

Although every effort has been made to ensure this document is error-free, VersaLogic makes no

representations or warranties with respect to this product and specifically disclaims any implied warranties of

merchantability or fitness for any particular purpose.

VersaLogic reserves the right to revise this product and associated documentation at any time without

obligation to notify anyone of such changes.

PC/104 and the PC/104 logo are trademarks of the PC/104 Consortium.

EPM-19 Hardware Reference Manual iii

Product Release Notes

Release 1.06 April 2021 Added CBR-1206 cable information on page 6

Release 1.05 November 2020

Updated CBR-4005B image (Figure 27)

Updated power adapter information (page 7)

Release 1.01 July 2015 Updated Web links

Release 1.0 December 2015 First production release

Technical Support

The EPM-19 product page contains additional information and resources for this product

including:

 Reference Manuals (PDF format)

 Operating system information and software drivers

 Data sheets and manufacturers’ links for chips used in this product

 BIOS information and upgrades

 Utility routines and benchmark software

 VersaAPI Version 1.2.x

If you have additional questions, contact VersaLogic Technical Support at (503) 747-2261.

VersaLogic support engineers are also available via e-mail at Support@VersaLogic.com.

REPAIR SERVICE

If your product requires service, you must obtain a Returned Material Authorization (RMA)

number by calling (503) 747-2261.

Provide the following information:

 Your name, the name of your company, your phone number, and e-mail address

 The name of a technician or engineer that can be contacted if any questions arise

 Quantity of items being returned

 The model and serial number (barcode) of each item

 A detailed description of the problem

 Steps you have taken to resolve or recreate the problem

 The return shipping address

EPM-19 Hardware Reference Manual iv

Warranty Repair All parts and labor charges are covered, including return shipping

charges for UPS Ground delivery to United States addresses.

Non-warranty Repair All non-warranty repairs are subject to diagnosis and labor charges,

parts charges and return shipping fees. Specify the shipping method

you prefer and provide a purchase order number for invoicing the

repair.



Note:

Mark the RMA number clearly on the outside of the box before returning. Failure to do

so can delay the processing of your return.

RoHS Compliance

The EPM-19 is RoHS-compliant.

ABOUT ROHS

In 2003, the European Union issued Directive 2002/95/EC regarding the Restriction of the use of

certain Hazardous Substances (RoHS) in electrical and electronic equipment.

The RoHS directive requires producers of electrical and electronic equipment to reduce to

acceptable levels the presence of six environmentally sensitive substances: lead, mercury,

cadmium, hexavalent chromium, and the presence of poly-brominated biphenyls (PBB) and poly-

brominated diphenyl ethers (PBDE) flame retardants, in certain electrical and electronic products

sold in the European Union (EU) beginning July 1, 2006.

VersaLogic Corporation is committed to supporting customers with high-quality products and

services meeting the European Union’s RoHS directive.

Cautions

ELECTROSTATIC DISCHARGE

Electrostatic discharge (ESD) can damage boards, disk drives and other components. The circuit

board must only be handled at an ESD workstation. If an approved station is not available, some

measure of protection can be provided by wearing a grounded antistatic wrist strap. Keep all

plastic away from the board, and do not slide the board over any surface.

After removing the board from its protective wrapper, place the board on a grounded, static-free

surface, component side up. Use an antistatic foam pad if available.

The board should also be protected inside a closed metallic anti-static envelope during shipment

or storage.



Note:

The exterior coating on some metallic antistatic bags is sufficiently conductive to cause

excessive battery drain if the bag comes in contact with the bottom-side of the EPM-19.

LITHIUM BATTERY

To prevent shorting, premature failure or damage to the lithium battery, do not place the board on

a conductive surface such as metal, black conductive foam or the outside surface of a metalized

ESD protective pouch. The Lithium battery may explode if mistreated. Do not recharge,

disassemble, or dispose of in fire. Dispose of used batteries promptly.

EPM-19 Hardware Reference Manual v

MOUNTING SUPPORT

The single board computer must be supported at all four mounting points to prevent excessive

flexing when expansion modules are attached and removed. Flex damage caused by excessive

force on an improperly mounted circuit board is not covered under the product warranty. See

page 5 for more details.

EARTH GROUND REQUIREMENT

All mounting standoffs should be connected to earth ground (chassis ground). This provides

proper grounding for EMI purposes. Figure 1 shows the locations of the board’s mounting holes.

All mounting holes identified in Figure 1 must be connected to earth ground.

Figure 1. Attaching the EPM-19 to Earth Ground

EPM-19 Hardware Reference Manual vi

Contents

Introduction ..................................................................................................................... 1

Description .......................................................................................................................... 1

Technical Specifications ..................................................................................................... 3

EPM-19 Block Diagram ..................................................................................................... 4

Dimensions and Mounting .................................................................................................. 5

Hardware Assembly ............................................................................................... 5

Related Documents ............................................................................................................. 6

Configuration and Setup ................................................................................................ 7

Initial Configuration ........................................................................................................... 7

Basic Setup ......................................................................................................................... 7

Jumper Blocks ..................................................................................................................... 9

Jumpers Blocks in the As-Shipped Configuration ................................................. 9

Jumper Summary ................................................................................................. 10

BIOS Setup Utility ............................................................................................................ 10

CMOS/Non-volatile RAM ................................................................................... 10

Clearing CMOS RAM ......................................................................................... 11

Operating System Installation ........................................................................................... 12

ACPI Version Setting .......................................................................................... 12

Windows XP Considerations ............................................................................... 12

Linux Considerations ........................................................................................... 12

Board Features .............................................................................................................. 13

CPU ................................................................................................................................... 13

DMA Controller ................................................................................................... 13

Watchdog Timers ................................................................................................. 13

Real-time Clock ................................................................................................... 13

Vortex86DX2 SoC On-chip Temperature Sensor ............................................... 14

System RAM ..................................................................................................................... 14

I/O Interfaces .................................................................................................................... 14

Power Delivery ................................................................................................................. 15

Main Power Connector ........................................................................................ 15

Cabling ................................................................................................................. 16

Battery Power Options ......................................................................................... 16

VL-CBR-0203 External Battery Module ............................................................. 17

Cabling ................................................................................................................. 18

Operating the Board without a Battery ................................................................ 19

Switches ............................................................................................................................ 20

Push-Button Reset................................................................................................ 20

LEDs/Indicators ................................................................................................................ 20

Programmable LED ............................................................................................. 21

External Speaker ............................................................................................................... 21

Mass Storage Interfaces ............................................................................................... 22

SATA ................................................................................................................................ 22

microSD Socket ................................................................................................................ 23

Contents

EPM-19 Hardware Reference Manual vii

Multi-purpose I/O ........................................................................................................... 25

USB ................................................................................................................................... 25

PCIe Mini Card / mSATA ................................................................................................ 25

mSATA Activity LED ......................................................................................... 27

Booting from a PCIe Minicard ............................................................................ 27

PCIe Mini Card LEDs .......................................................................................... 28

User I/O Connector ........................................................................................................... 29

Cabling ................................................................................................................. 30

Serial Ports .................................................................................................................... 31

Serial Port Connectors ...................................................................................................... 31

Serial Port Connector Pinouts .............................................................................. 32

Cabling ................................................................................................................. 32

Serial Port Assignment ..................................................................................................... 33

COM3/COM4 Hardware Configuration ........................................................................... 34

Video Interfaces ............................................................................................................ 35

Configuration ....................................................................................................... 35

VGA Interface ................................................................................................................... 36

Cabling ................................................................................................................. 37

LVDS Flat Panel Display Connector ................................................................................ 38

Cabling ................................................................................................................. 39

Compatible LVDS Panel Displays ....................................................................... 39

BIOS Settings for Boot Display Devices .......................................................................... 40

Console Redirection .......................................................................................................... 40

Enabling Synchronous Display Output ............................................................................. 41

Network Interfaces ........................................................................................................ 42

Controller Configuration...................................................................................... 42

Ethernet Connectors ............................................................................................. 42

Cabling ................................................................................................................. 43

On-Board Ethernet Status LEDs .......................................................................... 44

Off-Board Ethernet Status LEDs ......................................................................... 44

Expansion Interfaces .................................................................................................... 45

SPX™ Expansion Bus ...................................................................................................... 45

Cabling ................................................................................................................. 46

VersaLogic SPX Expansion Modules .................................................................. 46

PC/104 Expansion Bus ..................................................................................................... 46

PC/104-Plus PCI Expansion Interface ................................................................. 47

System Resources and Maps ....................................................................................... 48

CBR-4005B Paddleboard .............................................................................................. 49

CBR-4005B Paddleboard ................................................................................................. 49

CBR-4005B Connectors and Indicators............................................................... 49

User I/O Connector .............................................................................................. 50

Cabling ................................................................................................................. 51

Auxiliary I/O Connector ...................................................................................... 51

Dimensions and Mounting Holes ........................................................................ 52

Contents

EPM-19 Hardware Reference Manual viii

Figures

Figure 1. Attaching the EPM-19 to Earth Ground .............................................................. v

Figure 2. VL- EPM-19 Fox Single Board Computer (Top Side) ....................................... 1

Figure 3. VL- EPM-19 Fox Single Board Computer (Bottom Side) .................................. 2

Figure 4. EPM-19 Block Diagram ...................................................................................... 4

Figure 5. EPM-19 Dimensions and Mounting Holes ......................................................... 5

Figure 6. Jumper Block Locations ...................................................................................... 9

Figure 7. Location of the V3 Clear CMOS Jumper .......................................................... 11

Figure 8. Location and Pin Orientation of the Main Power Connector ............................ 15

Figure 9. Location and Pin Orientation of the External Battery Connector ..................... 17

Figure 10. VL-CBR-0203 Latching Battery Module ........................................................ 17

Figure 11. Location of the V4 Battery Saver Jumper ....................................................... 18

Figure 12. Location of the V2 No Battery Mode Jumper ................................................. 19

Figure 13. Locations of the LEDs/Indicators .................................................................... 20

Figure 14. Location of the SATA Port ............................................................................. 22

Figure 15. Location of the microSD Socket ..................................................................... 23

Figure 16. Location of the mSATA Activity LED ........................................................... 27

Figure 17. Location of PCIe Mini Card LEDs .................................................................. 28

Figure 18. Location and Pin Orientation of User I/O Connector ...................................... 29

Figure 19. Location and Pin Orientation of Serial Port Connectors ................................. 31

Figure 20. COM3/COM4 End-point Termination Jumpers .............................................. 34

Figure 21. VGA Connector Location and Pin Configuration ........................................... 36

Figure 22. Location of the LVDS Connector ................................................................... 38

Figure 23. Wiring for a DB9 to DB9 RS-232 Adapter for Console Redirection ............. 40

Figure 24. Location and Pin Orientation for the J3 Ethernet Connector .......................... 42

Figure 25. Location of Ethernet Status LEDs D3 and D8 ................................................ 44

Figure 26. J5 SPX Connector Location and Pin Configuration ........................................ 45

Figure 27. CBR-4005B Connectors .................................................................................. 49

Figure 28. Location and Pin Orientation of the User I/O Connector ................................ 50

Figure 29. Location and Pin Orientation of Auxiliary I/O Connector .............................. 51

Figure 30. CBR-4005B Dimensions and Mounting Holes ............................................... 52

Tables

Table 1: Technical Specifications for all EPM-19 Configurations..................................... 3

Table 2: Jumper Summary ................................................................................................ 10

Table 3: Memory Configurations of EPM-19 Board Models ........................................... 14

Table 4: J13 Power Connector Pinout .............................................................................. 16

Table 5: Expansion Current Limits ................................................................................... 16

Table 6: Battery Saver Jumper Truth Table ...................................................................... 18

Table 7: No Battery Mode Jumper Truth Table ............................................................... 19

Table 8: PCIe Mini Card / mSATA Pinout ....................................................................... 25

Contents

EPM-19 Hardware Reference Manual ix

Table 9: Primary Boot Device Truth Table ...................................................................... 27

Table 10: PCIe Mini Card LED States ............................................................................. 28

Table 11: J9 I/O Connector Pinout and Pin Orientation ................................................... 30

Table 12: J7 COM1/COM2 Connector Pinout ................................................................. 32

Table 13: J6 COM3/COM4 Connector Pinout ................................................................. 32

Table 14: Recommended Serial Port Settings for Vortex86DX2 BIOS ........................... 33

Table 15: COM3/COM4 Termination Jumpers ................................................................ 34

Table 16: J8 VGA Video Output Pinout ........................................................................... 37

Table 17: J15 LVDS Flat Panel Display Connector Pinout .............................................. 39

Table 18: Compatible LVDS Interface TFT-Technology Flat Panel Displays ................ 39

Table 19: BIOS Settings for Boot Display Devices and Corresponding Resolutions ...... 40

Table 20: Ethernet Connector Pinout ................................................................................ 43

Table 21: On-board Ethernet Status LEDs (D3 and D8) ................................................. 44

Table 22: SPX Connector Pinout ...................................................................................... 46

Table 23: PC/104 ISA I/O, IRQ, and Memory Resources ................................................ 47

Table 24: User I/O Connector Pinout ............................................................................... 50

Table 25: Auxiliary I/O Connector Pinout ....................................................................... 51

EPM-19 Hardware Reference Manual 1

Introduction

Description

The EPM-19 is a feature-packed single board computer designed for OEM control projects

requiring fast processing, with two memory density options and designed-in reliability and

longevity (product lifespan).

Figure 2 shows the connectors and major components on the top side of the board. Figure 3

shows the connectors and major components on the bottom side of the board.

Item Description Item Description

A PC/104-Plus (PCI) connector J PC/104 (ISA) connector

B PCIe Minicard/mSATA connector K PC/104 (ISA) connector

C Battery L Main power connector

D Ethernet port 0/1 connector M SATA connector

E COM3/COM4 connector N DRAM devices

F COM1/COM2 connector O VGA connector

G User I/O [CBR-4005B mating connector] P SPX connector

External battery connector

FPGA device

I Vortex86DX2 SoC

Figure 2. VL- EPM-19 Fox Single Board Computer (Top Side)

Introduction

EPM-19 Hardware Reference Manual 2

Item Description

A microSD socket

LVDS connector

C DRAM devices

Figure 3. VL- EPM-19 Fox Single Board Computer (Bottom Side)

EPM-19 boards are subjected to 100% functional testing and are backed by a limited five-year

warranty. Careful parts sourcing and US-based technical support ensure the highest possible

quality, reliability, service and product longevity for this exceptional SBC.

Introduction

EPM-19 Hardware Reference Manual 3

Technical Specifications

Specifications are typical at 25 °C with 5.0V supply, unless otherwise noted. Specifications are

subject to change without notice.

Table 1: Technical Specifications for all EPM-19 Configurations

Item VL-EPM-19SAK VL-EPM-19SBK VL-EPM-19EAK VL-EPM-19EBK

(Standard Temperature) (Extended Temperature)

Board size 4.250 inches x 3.775 inches

Storage temperature -40 °C to 85 °C

Free air operating

temperature

(Note)

0 °C to + 60 °C -40°C to +85 °C

CPU clock 933 MHz 800 MHz

Memory clock 333 MHz 300 MHz

Memory size 512 MB 1 GB 512 MB 1 GB

Idle power 5.3 W 5.3W 5.0 W 5.0 W

Typical power 5.5 W 5.6 W 5.3 W 5.4 W

Max power 5.8 W 5.9 W 5.7 W 5.8 W

Input Voltage +5 VDC ±5%

Analog VGA output

• Video BIOS supports up to 1024x768 resolution with 32-bit color

• With VGA driver supports up to 1920x1440. Synchronous display use causes VGA to be

limited to 1024x768 (LVDS panel maximum supported resolution)

Digital Video output

• LVDS video output

• Support for 18-bit or 24-bit single channel LVDS flat panel displays

•

Video BIOS support for 640x480, 800x480, 800x600, 1024x600, and 1024x768

System Reset

sensing; resets when the 5V, 3.3V, 1.8V, 1.5V, 1.2V, or 1.0V power rails vary by more than

± 10% of their optimal values.

Ethernet interface Two auto-detect 10BaseT/100BaseTX ports

COM1-2 interface RS-232, 16C550 compatible, 115k baud max.

COM3-4 interface RS-232/422/485, 16C550 compatible, 460k baud max.

SPI interface

Supports SPI and SPX devices. Supports up to two SPX modules, including low cost analog

and digital modules.

GPIO/Timers Three 8254-compatible timer/counters (FPGA functions, six muxed with the eight GPIO signals)

BIOS AMI Vortex86DX2 BIOS

PC/104-

Plus

(PCI)

bus speed 33 MHz

PC/104 (ISA)

bus speed

8 MHz

Compatibility

• PC/104 – full compliance

• Embedded-PCI (PC/104-Plus) – full compliance, 3.3V signaling

•

SPX™ – full compliance

Weight 0.50 lb (0.22 kg)

Generated

frequencies

100 MHz, 50 MHz, 33 MHz, 29.49 MHz, 25 MHz, 14.318 MHz, 8 MHz, 4 MHz, 2 MHz, 1 MHz,

32.768 kHz

Notes: Derate -1.1°C per 305m (1,000 ft.) above 2,300m (7,500 ft.).

Introduction

EPM-19 Hardware Reference Manual 4

EPM-19 Block Diagram

Figure 4. EPM-19 Block Diagram

Introduction

EPM-19 Hardware Reference Manual 5

Dimensions and Mounting

The EPM-19 complies with the PC/104 standard which provides for specific mounting hole and

PC/104-Plus stack locations as shown in Figure 5.

Figure 5. EPM-19 Dimensions and Mounting Holes

(Not to scale. All dimensions in inches.)

CAUTION:

The EPM-19 must be supported at all four mounting points to prevent excessive

flexing when expansion modules are attached and removed. Flex damage

caused by excessive force on an improperly mounted circuit board is not

covered under the product warranty.

HARDWARE ASSEMBLY

The EPM-19 mounts on four hardware standoffs using the corner mounting holes. These

standoffs are secured to the underside of the circuit board using pan head screws.

Introduction

EPM-19 Hardware Reference Manual 6

The entire assembly can sit on a table top or be secured to a base plate. When bolting the unit

down, make sure to secure all standoffs to the mounting surface to prevent circuit board flexing.

An extractor tool is available (part number VL-HDW-201) to separate the PC/104 modules from

the stack.

Related Documents

The following documents available are on the EPM-19 Product Page:

 EPM-19 Programmer’s Reference Manual – provides information on the board’s resources

(memory, I/O, and IRQs), a description of the FPGA’s registers, and programming

information for the board’s hardware interfaces.

 EPM-19_EBX-18 BIOS Reference Manual – provides information on accessing and

configuring settings in the BIOS Setup utility. All BIOS menus, submenus, and configuration

options are described.

 VersaAPI Installation and Reference Guide – describes the shared library of API calls for

reading and controlling on-board devices on certain VersaLogic products.

Additional documents:

Overview of Vortex86DX2

http://www.vortex86.com/?p=16

USB 2.0 Hub and 10/100

Ethernet Controller

ILAN9512 Data sheet

http://ww1.microchip.com/downloads/en/DeviceDoc/9512.pdf

PC/104 Specification

http://www.versalogic.com/products/PC104/index.asp

PC/104-Plus Specification

http://www.versalogic.com/products/PC104/index.asp

EPM-19 Hardware Reference Manual 7

Configuration and Setup

Initial Configuration

The following components are recommended for a typical development system.

 EPM-19 single board computer

 ATX power supply with motherboard and disk drive connectors

 VGA video monitor

 USB Keyboard

 USB Mouse

 SATA hard drive

The following VersaLogic cables and accessories are recommended.

 VGA Video adapter cable -12” (CBR-1204). CBR-1206 is an 18" 12-pin Pico-Clasp / 15-pin

VGA option

 User I/O cable (CBR-4005) and accompanying paddleboard (CBR-4005B)

 Power adapter cable (CBR-1008). VL-CBR-2034 power adapter is required for the VL-PS-

ATX12-300A power supply

 VL-CBR-0702 – SATA data cable

 VL-CBR-0401 – ATX to SATA power adapter

You will also need a Windows (or other OS) installation CD/DVD and corresponding drive.

Basic Setup

The following steps outline the procedure for setting up a typical development system. The

EPM-19 should be handled at an ESD workstation or while wearing a grounded antistatic wrist

strap.

Before you begin, unpack the EPM-19 and accessories. Verify that you received all the items you

ordered. Inspect the system visually for any damage that may have occurred in shipping. Contact

support@versalogic.com immediately if any items are damaged or missing.

Gather all the peripheral devices you plan to attach to the EPM-19 and their interface and power

cables.

It is recommended that you attach standoffs to the board now to stabilize the board and make it

easier to work with. (Refer to the section titled “Hardware Assembly” on page 5.)

1. Connect Power

 Plug the power adapter cable CBR-1008 into connector J13. Attach the motherboard

connector of the ATX power supply to the adapter.

To use the Lithium Battery with the EPM-19, move the jumper on V4 from being stored on pin 1

to connecting pin 1 and pin 2. Refer to the section titled “Battery Saver Jumper” on page 18 for

more information.

Configuration and Setup

EPM-19 Hardware Reference Manual 8

2. Attach Cables and Peripherals

 Plug the video adapter cable CBR-1204 into connector J8. Attach the video monitor (VGA

DB15) interface cable to the video adapter.

 Connect the CBR-4005B paddleboard to the EPM-19 using a CBR-4005 cable

 Plug USB keyboard and mouse into any of the available USB ports on the CBR-4005B

paddleboard.

 Plug a USB DVD-ROM drive into any of the available USB ports on the CBR-4005B

paddleboard. To avoid potential device delays and excessive power consumption through the

USB ports, use an external power supply for the USB CD-ROM drive.

 Plug the SATA data cable VL-CBR-0702 into the SATA connector (J10). Attach a SATA

hard drive to the other end of the cable.

 Attach the SATA power adapter cable VL-CBR-0401 to the ATX power supply and SATA

drive.

3. Review Configuration

 Before you power up the system, double check all the connections. Make sure all cables are

oriented correctly and that adequate power will be supplied to the EPM-19 and peripheral

devices.

4. Power On

 Turn on the ATX power supply and the video monitor. If the system is correctly configured, a

video signal should soon be present.

5. Change BIOS Setup utility settings

 Enter the BIOS Setup utility by pressing <Delete> during the early boot cycle.

 Verify that the desired primary boot device is listed as such. Refer to Table 9 on page 27 for

more information.

 Before saving the BIOS Setup utility settings, insert the Windows (or other OS) installation

disk in the DVD-ROM drive so it will be accessed when the system reboots.

 Press <F10> and write the new parameters to CMOS RAM. The system will reboot.

6. Install an Operating System

 Install the operating system according to the instructions provided by the operating system

manufacturer. (See Operating System Installation.)



Note:

If you intend to operate the EPM-19 under Windows XP or Windows XP Embedded, be sure to

use Service Pack 3 (SP3).

Configuration and Setup

EPM-19 Hardware Reference Manual 9

Jumper Blocks

JUMPERS BLOCKS IN THE AS-SHIPPED CONFIGURATION

Figure 6. Jumper Block Locations

Configuration and Setup

EPM-19 Hardware Reference Manual 10

JUMPER SUMMARY

Table 2: Jumper Summary

Jumper

Block

Description Reference

V1 [1-2]

COM3 Rx End-point termination

• In – COM3 End-point termination enabled

• Out – COM3 End-point termination disabled (default)

Table 15, page 34

V1 [3-4]

COM4 Rx End-point termination

• In – COM4 End-point termination enabled

• Out – COM4 End point termination disabled (default)

Table 15, page 34

CMOS RAM Clear

• 1-2 – Normal mode (default)

• 2-3 – Clear CMOS RAM

Clearing CMOS RAM,

page 11

No Battery Mode

• 1-2 – Battery has been removed

• 2-3 – Battery is installed (default)

Operating the Board

without a Battery, page 19

Battery Saver

• 1 only (or jumper is removed) (default)

• 1-2 – Battery is connected

Battery Saver Jumper,

page 18

BIOS Setup Utility

The EPM-19 permits users to modify the BIOS Setup utility defaults. Refer to the EPM-19_EBX-

18 BIOS Reference Manual (available on the EPM-19 Product Support Web Page) for

information on accessing and configuring settings in the BIOS Setup utility. All BIOS menus,

submenus, and configuration options are described in the EPM-19_EBX-18 BIOS Reference

Manual.

CMOS/NON-VOLATILE RAM

The Vortex86DX2 SoC contains a small amount of CMOS/Non-volatile RAM to store the BIOS

Setup utitlity settings. If you have modified BIOS Setup utility settings and the board fails to

boot, clear the CMOS/Non-volatile RAM to restore the default BIOS settings.

Configuration and Setup

EPM-19 Hardware Reference Manual 11

CLEARING CMOS RAM

To clear the contents of CMOS RAM and the Real-Time Clock:

1. Power off the EPM-19.

2. Remove the V3 jumper from its default position (connecting pins 1-2) and install it on pins

2-3. Figure 7 shows the location of the V3 jumper block.

3. Leave the jumper in place for at least five seconds.

4. Move the jumper to back to its default position, connecting pins 1-2.

5. Power on the EPM-19.

Figure 7. Location of the V3 Clear CMOS Jumper



Integrator’s Note:

If clearing the contents of CMOS RAM fails to restore the board to proper operation and you are

unable to enter the BIOS Setup utility, the EPM-19 needs to be serviced by the factory.

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VersaLogic Fox (VL-EPM-19) Reference guide

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Model: Fox (VL-EPM-19)

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