Ampro MightyBoard 821 Reference Manual

MightyBoard 821

Single Board Computer

Reference Manual

P/N 5001784B Revision A

Notice Page

NOTICE

No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior written permission of Ampro

Computers, Incorporated.

DISCLAIMER

Ampro Computers, Incorporated makes no representations or warranties with respect to the contents of this manual or of the associated Ampro products, and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Ampro shall under no circumstances be liable for incidental or consequential damages or related expenses resulting from the use of this product, even if it has been notified of the possibility of such damages. Ampro reserves the right to revise this publication from time to time without obligation to notify any person of such revisions. If errors are found, please contact

Ampro at the address listed below on the Notice page of this document.

TRADEMARKS

Ampro and the Ampro logo are registered trademarks, and CoreModule, Little Board, LittleBoard,

MightyBoard, MightySystem, MiniModule, ReadyBoard, ReadyBox, ReadyPanel, ReadySystem,

RuffSystem are trademarks of Ampro Computers, Inc. All other marks are the property of their respective companies.

REVISION HISTORY

Revision

A, A

A, B

A, C

B, A

Reason for Change

Initial Release

Correction to move pin 1 on J21

Removed reference to Design Library in

Mechanical Specifications

Removed TV-Out; added LAN LED jumper pins; corrected block diagram; added reference to Design Library back into Mechanical Specification

Date

Dec/06

Feb/07

Dec/07

Aug/08

Ampro Computers, Incorporated

5215 Hellyer Avenue

San Jose, CA 95138-1007

Tel. 408 360-0200

Fax 408 360-0222 www.ampro.com

© Copyright 2007, 2008 Ampro Computers, Incorporated

Audience

This manual provides reference only for computer design engineers, including but not limited to hardware and software designers and applications engineers. Ampro Computers, Inc. assumes you are qualified to design and implement prototype computer equipment.

ii Reference Manual MightyBoard 821

Contents

Chapter 1 About This Manual ....................................................................................................1

Purpose of this Manual ....................................................................................................................1

References ......................................................................................................................................1

Chapter 2 Product Overview......................................................................................................3

MightyBoard Architecture.................................................................................................................3

Product Description..........................................................................................................................4

Board Features ..........................................................................................................................4

Block Diagram ............................................................................................................................7

Major Components (ICs).............................................................................................................7

Connector and Header Definitions..............................................................................................9

Additional Components.............................................................................................................10

Jumper Definitions ....................................................................................................................11

Specifications.................................................................................................................................11

Power Specifications ................................................................................................................11

Environmental Specifications....................................................................................................12

Thermal/Cooling Requirements ................................................................................................12

Physical Specifications .............................................................................................................13

Mechanical Specifications ........................................................................................................13

Chapter 3 Hardware .................................................................................................................15

Overview ........................................................................................................................................15

Interrupt Channel Assignments ................................................................................................16

Memory Map ............................................................................................................................16

I/O Address Map ......................................................................................................................17

Serial Interfaces ............................................................................................................................18

Keyboard/Mouse Interfaces ...........................................................................................................20

Keyboard Interface ...................................................................................................................20

Mouse Interface ........................................................................................................................21

USB Interfaces...............................................................................................................................21

USB 2.0 Support.......................................................................................................................21

Legacy USB Support ...............................................................................................................21

USB4 and USB5 .......................................................................................................................21

Audio Interface ..............................................................................................................................22

Video Interfaces .............................................................................................................................22

LVDS Interface ........................................................................................................................23

Utility Interface ..............................................................................................................................24

External Power-On Switch........................................................................................................24

External Reset Switch...............................................................................................................24

External Speaker (Beep) .........................................................................................................24

External Power-On LED ...........................................................................................................24

External IDE Activity LED .........................................................................................................24

Miscellaneous ................................................................................................................................25

Real Time Clock (RTC) ............................................................................................................25

External Battery (BT1) ..............................................................................................................25

Temperature Monitoring ..........................................................................................................25

User GPIO Signals (J8) ............................................................................................................25

Ethernet External LED ..............................................................................................................26

Serial Console ..........................................................................................................................26

MightyBoard 821 Reference Manual iii

Contents

Infrared (IrDA) Port .................................................................................................................. 26

Watchdog Timer....................................................................................................................... 27

Power Interfaces .......................................................................................................................... 27

ATX Power Supply Interface ................................................................................................... 27

Optional CPU Fan .................................................................................................................... 28

Optional System Fan ............................................................................................................... 28

Power and Sleep States................................................................................................................ 28

Power-On Switch .................................................................................................................... 28

Sleep States (ACPI) ................................................................................................................. 29

Chapter 4 BIOS Setup .............................................................................................................. 31

Introduction.................................................................................................................................... 31

Entering BIOS Setup (VGA Display) ........................................................................................ 31

Entering BIOS Setup (Remote Access) .................................................................................. 31

Logo screen .................................................................................................................................. 32

Logo Screen Image Requirements .......................................................................................... 32

Appendix A Technical Support .................................................................................................. 33

List of Figures

Figure 2-1.

MightyBoard and ATX Style Boards Compared ...................................................... 3

Figure 2-2.

Functional Block Diagram ....................................................................................... 7

Figure 2-3.

Component Locations ............................................................................................ 8

Figure 2-4.

Connector and Header Locations ......................................................................... 10

Figure 2-5.

Back Panel Overview ............................................................................................ 13

Figure 3-1.

RS485 Serial Port Implementation ........................................................................ 18

List of Tables

Table 2-1.

Table 2-2.

Table 2-3.

Table 2-4.

Table 2-5.

Table 2-6.

Table 2-7.

Table 2-8.

Table 3-1.

Table 3-2.

Table 3-3.

Table 3-4.

Table 3-5.

Table 3-6.

Table 3-7.

Table 3-8.

Major Component Descriptions and Functions ....................................................... 8

Connector and Header Descriptions ....................................................................... 9

Additional Component Descriptions ...................................................................... 10

Jumper Settings .................................................................................................... 11

System Power Requirements (1.5 GHz CPU)....................................................... 11

System Power Requirements (2.0 GHz CPU)....................................................... 12

Environmental Requirements ................................................................................ 12

Weight and Footprint Dimensions ......................................................................... 13

Interrupt Channel Assignments ............................................................................. 16

Memory Map ......................................................................................................... 17

I/O Address Map ................................................................................................... 17

Serial 2 (COM2) Interface Pin/Signal Descriptions (J6) ........................................ 19

Serial 3 and 4 (COM3 and COM4) Interface Pin/Signal Descriptions (J15).......... 19

USB Ports 4 & 5 Interface Pin/Signal Descriptions (J21) ...................................... 21

LVDS Interface Pin/Signal Descriptions (J2)......................................................... 23

Utility Interface Pin/Signal Descriptions (J17) ....................................................... 24

Table 3-9.

User GPIO Signals Pin/Signal Descriptions (J10)................................................. 25

Table 3-10.

Ethernet External LED Pin/Signal Descriptions (JP6) ........................................... 26

Table 3-11.

Infrared (IrDA) Interface Pin/Signal Descriptions (J7) ........................................... 26

Table 3-12.

ATX Power Supply Interface Pin/Signal Descriptions (J2) .................................... 27

Table 3-13.

Optional CPU Fan Interface Pin/Signal Descriptions (J12) ................................... 28

Table 3-14.

Optional System Fan Interface Pin/Signal Descriptions (J22)............................... 28

Table A-1.

Technical Support Contact Information ................................................................. 33

iv Reference Manual MightyBoard 821

Chapter 1 About This Manual

Purpose of this Manual

This manual is for designers of systems based on the MightyBoard 821™ single board computer (SBC). The information in this manual helps designers create embedded systems based on specific design requirements.

Information provided in this reference manual includes:

• MightyBoard 821 Specifications

• Environmental requirements

• Major integrated circuits (chips) and features implemented

• MightyBoard 821 connector/pin numbers and definitions

• BIOS Setup information

Information not provided in this reference manual includes:

• Detailed chip specifications

• Internal component operation

• Internal registers or signal operations

• Bus or signal timing for industry standard busses and signals

References

The following list of references may be helpful for you to complete your design successfully. Some of this material is also available on the Ampro web site in the InfoCenter. The InfoCenter was created for embedded system developers to share Ampro’s knowledge, insight, and expertise.

Specifications

• PCI Express Compliant Specifications

For the latest revision of the PCI Express specifications, contact the PCI Special Interest Group

Office at:

Web site: http://www.pcisig.com

• Audio CODEC 1997 Standard, including all revisions

For latest version of the Audio (AC'97) standard developed by Intel Corporation, refer to:

Web site: http://www.intel.com/design/chipsets/audio

Chip specifications used on the MightyBoard 821:

• Intel Corporation and the Pentium ® M or Celeron® M CPUs, and the chips 915GM and 82801FB

ICH6-M, used for the Memory Hub (Northbridge/Video controller) and I/O Hub (Southbridge) respectively.

Web site: http://www.intel.com

• Nuvoton Technology, Corp. and the W83627HF chip used for the Super I/O controller

Web site: http://www.nuvoton-usa.com/products/winbond_products/pdfs/PCIC/W83627HF_HGb.pdf

• FinTek and the F81216D chip used for the Secondary I/O (LPC UART) controller (48-pin)

Web site: http://www.fintek.com.tw/eng/

MightyBoard 821 Reference Manual 1

Chapter 1 About This Manual

• Intel Corporation and the Gigabit Ethernet PCI Express 82573V, used for the Gigabit Ethernet controller.

Web site: http://www.intel.com/design/network/products/lan/controllers/82573.htm

NOTE If you are unable to locate the datasheets using the links provided, go to the manufacturer’s web site where you should be able to perform a search using the chip datasheet number or name listed, including the extension such as htm or pdf.

2 Reference Manual MightyBoard 821

Chapter 2 Product Overview

This introduction presents general information about the Mini-ITX form factor and the MightyBoard 821 single board computer (SBC). After reading this chapter you should understand:

• MightyBoard 821 architecture

• MightyBoard 821 features

• Major components

• Connectors

• Specifications

MightyBoard Architecture

Ampro’s MightyBoard ™ is based on the Mini-ITX form factor, which uses the smallest motherboard size, measuring a mere 170mm x 170mm (6.7" x 6.7"). The MightyBoard size complies with the ATX mechanical standard in terms of mounting holes, PCI slot placement, and I/O connector placement. The MightyBoard can be used in any enclosure, which supports ATX, MicroATX or FlexATX motherboards. Unlike Ampro’s other SBCs (single board computers), which support the PC/104, PC/104-Plus, and PCI-104 standards, the

MightyBoard provides a single PCI slot for I/O expansion.

The MightyBoard form-factor is small enough for deeply embedded applications, yet large enough to contain the functions of a complete embedded SBC including CPU, memory, mass storage interfaces, display controller, serial/parallel ports, today’s advanced operating systems, and other system functions.

This new embedded form factor boasts a highly flexible and adaptable system expansion, allowing easy PCI board addition of functions such as IEEE 1394 FireWire ™, video capture, or wireless networking not usually contained in embedded motherboards.

This new MightyBoard SBC ensures that embedded system OEMs can standardize their designs and that embedded computing solutions can be designed into space constrained environments with off-the-shelf components. The MightyBoard SBC is open to continuing technology advancements, since it is both processor and I/O independent. It creates opportunity for economies of scale in chassis, power supply, and peripheral devices.

Rear I/O Location

Full Size

ATX

9.6" x 12"

Mini-ITX

(MightyBoard)

6.7" x 6.7"

Flex ATX 7.5" x 9"

Micro ATX

9.6" x 9.6"

Figure 2-1. MightyBoard and ATX Style Boards Compared


4


Product Description

The MightyBoard 821 is an exceptionally high integration, high performance, rugged, and high quality single-board computer, which contains all the component subsystems of an ATX motherboard plus a single

PCI expansion slot. Based on Intel processors (Pentium M or Celeron M), the MightyBoard 821 gives designers a complete, high performance embedded processor based on the Mini-ITX form factor.

Each MightyBoard 821 incorporates an Intel 915GM chipset (82915GM + 82801FBM) and provides four serial ports, an EPP/ECP parallel port, six USB 2.0 ports, PS/2 keyboard and mouse interfaces, and one

Ultra DMA 33/66/100 IDE controller supporting two IDE drives, two independent 10/100BaseTX and

1000BaseT Ethernet interfaces, and an audio AC'97 CODEC on the board. The MightyBoard 821 also supports up to 2GB of SDRAM in a single 184-pin DDR DIMM slot, and an AGP4x equivalent graphics controller, which provides CRT and LVDS flat panel video interfaces for the most popular LCD panels.

The MightyBoard 821 can be expanded through a single x16 PCI Express (PCIe) bus slot for additional system functions. This PCIe bus operates at clock speeds up to 100MHz.

Among the many embedded-PC enhancements on the MightyBoard 821 that ensure embedded system operation and application versatility are a watchdog timer, serial console support, battery-free boot, and

BIOS extensions for OEM boot customization.

The MightyBoard 821 is particularly well suited to either embedded or portable applications and meets the size, power consumption, temperature range, quality, and reliability demands of embedded system applications. The MightyBoard 821 requires an ATX power supply or a single +5V power supply.

Board Features

• CPU Features

♦ 2.0GHz Intel Pentium ® M 760 or 1.5GHz Celeron® M 370

♦ Front Side Bus (FSB) of 533MHz for the 2.0GHz Pentium, 400MHz for the 1.5GHz Celeron

• Memory

♦

♦

Provides two standard 200-pin DDR2 DIMM slots

Supports two +2.5V DDR2 DIMMs up to 2GB

♦

♦

Supports up to 2GB DDR2 (533MHz) SDRAM

Supports unregistered/unbuffered non-ECC DDR2 RAM

• PCI Express Bus x16 Slot Interface

♦

♦

Provides a single PCIe slot

Supports PCIe bus speed up to 4 GBps, each direction

• Serial ATA Interface (SATA)

♦

♦

Supports two 7-pin SATA ports

Provides 1.5 GB/second data transfer rate

• IDE Interface

♦

♦

♦

♦

Provides one enhanced IDE controller (2 devices)

Provides one 40-pin IDE connector

Supports dual bus master mode

Supports Ultra DMA 33/66/100 modes

♦

♦

Supports ATAPI and DVD peripherals

Supports IDE native and ATA compatibility modes

• Parallel Port

Reference Manual MightyBoard 821

Chapter 2

♦

♦

♦

Provides standard printer port

Supports IEEE standard 1284 protocols of EPP and ECP outputs

Provides bi-directional data lines

♦ Supports 16 byte FIFO for ECP mode

• USB Ports

♦

♦

♦

♦

♦

Provides two root USB hubs

Provides six USB ports

Supports USB bootable devices

Supports USB 2.0 and legacy USB v1.1

Supports over-current fuses on board

♦ Supports over-current detection status on board

• Serial Ports

♦

♦

♦

♦

♦

Provides four buffered serial ports with full handshaking

Provides 16550-equivalent controllers, each with a built-in 16-byte FIFO buffer

Supports RS232 capability on all four ports

Supports full modem capability on three of the four ports

Supports RS485 or RS422 operation on two of the four ports

♦

♦

Supports programmable word length, stop bits, and parity

Supports 16-bit programmable baud-rate generator and an interrupt generator

• Infrared Interface

♦

♦

♦

Provides a five-pin IrDA interface header (J7)

Supports IrDA v1.1

♦ Supports HPSIR and ASKIR infrared modes

• Keyboard/Mouse Interface

Provides a single PS/2 keyboard port

♦ Provides a single PS/2 mouse port

• Audio Interface

♦ Provides a single three-pin audio stack for MIC In, Line In, and Line Out

♦

♦

Supports AC'97 standard

AC'97 CODEC on board

• Ethernet Interface

♦

♦

♦

♦

♦

♦

Supports two fully independent ethernet ports

Integrated LEDs on each port (Link/Activity and Speed)

Provides PCIe interface using Intel 82573V controller

Supports IEEE 802.11 10BaseT/100BaseTX/1000BaseT compatible physical layer

Supports auto-negotiation for speed, duplex mode, and flow control

Supports full duplex or half-duplex mode

• Full-duplex mode supports transmit and receive frames simultaneously

• Supports IEEE 802.11 flow control in full duplex mode

Product Overview



♦

• Half-duplex mode supports enhanced proprietary collision reduction mode

♦ Supports LAN Boot (See Appendix B)

• Video Interfaces (CRT/LVDS)

Support CRT (2048-1536) with 64MB BIOS dependent UMA (Unified Memory Architecture)

♦

♦

Integrated graphics controller performance

LVDS outputs (1 or 2 channel, four differential signals 3-bits + clock)

• Miscellaneous

♦

♦

♦

♦

♦

♦

♦

♦

♦

Provides real-time clock (RTC) with replaceable battery

Supports battery-free boot

Provides external battery connection for RTC operation

Provides user GPIO interface header

Thermal and voltage monitoring

Provides connector for optional CPU fan

Supports a customizable Logo Screen

Supports Serial Console

Provides Watchdog Timer


Chapter 2

Block Diagram

Figure 2-2 shows the functional components of the MightyBoard 821.

Intel

Pentium M

or Celeron M

CPU

Clock

Product Overview

CRT VGA

LVDS LCD

Memory Hub

82915GM

(Northbridge)

DDR2

SODIMM

Memory Bus

PCIe x16 Bus

PCIe Bus

Connector

SMBus

Temp

Ethernet

Controller(2)

82573V

CPU Fan

IrDA 1.1

Parallel

Keyboard/

Mouse

PCIe x1 Bus

AC’97 Link

AC’97

CODEC

I/O Hub

82801FB

(Southbridge)

LPC Bus

Super I/O

W83627HF

PATA

SATA

IDE

SATA

IDE Devices,

(HDDs, CD-ROM, etc.

)

USB 2.0

USB Port 0

USB Port 1

USB Port 2

USB Port 3

USB Port 4

USB Port 5

LPC I/O

(Secondary)

F81216D

COM1 COM2

512kB

ROM

BIOS

COM3 COM4

RS232/RS422/RS485

GPIO (User Defined)

Figure 2-2. Functional Block Diagram

Major Components (ICs)

Table 2-1 lists the major integrated circuits (chips), including a brief description of each, on the

MightyBoard 821 and Figure 2-3

shows the location of the major chips.



Table 2-1. Major Component Descriptions and Functions

Chip Type

CPU (U10)

Memory Hub (U7)

I/O Hub (U3)

Super I/O (U5)

LPC (I/O) UART

Controller (U13)

Audio '97 CODEC

(U15)

Ethernet

Controllers

(U8, U11)

Mfg.

Intel

Intel

Intel

Nuvoton

FinTech

Realtek

Intel

Model

Pentium M,

Celeron M

915GM

82801FB

W83627HF Provides most of remaining I/O functions

(FDD, COM1/2, KB, MS, LPT, Fan,

IrDA)

F81216D

Provides some of the I/O functions (HDD,

Audio, USB, LAN, PCI)

LPC controller for Serial Ports 3 & 4

(COM 3 & 4)

ALC202A

82573V

Description

2.0GHz, 1.5GHz CPUs

Memory and Video functions

Audio '97 CODEC for audio In/Out signals

Ethernet – These chips provide two independent 10/100BaseT and 1000BaseT network channels respectively

Function

Embedded

CPU

Memory and Video

I/O

Functions

I/O

Functions

UART

(I/O)

Controller

Audio

In/Out

Ethernet

Functions

U15

U13

U10 U11

U8

U7

8

U5

U3

Figure 2-3. Component Locations

Reference Manual MightyBoard 821


Connector and Header Definitions

Table 2-2

describes the connectors and headers shown in Figure 2-4 . All I/O connectors and headers use

2.54mm (0.1") pin spacing (pitch) unless otherwise indicated.

Table 2-2. Connector and Header Descriptions

J13B/C

J14

J15

J16

J17

J18

J19

J20

J21

J22

J7

J8

J9

J10

J11A

J2

J3

J4

J5

Jack #

BT1

Signal

Battery

Description

2-pin, 1.25mm external battery connector

DIMM1 DDR2 Memory 1 240-pin socket for DDR2 RAM DIMM

DIMM2 DDR2 Memory 2 240-pin socket for DDR2 RAM DIMM

J1 A/B Keyboard/Mouse 6-pin standard PS/2 connectors for keyboard (purple) and mouse

(green)

J6

JP6

ATX PWR In

Serial 1 (COM1)

Parallel

Video (CRT)

Serial 2 (COM2)

Ethernet External

LED

20-pin, 4.2mm for ATX power in connector

9-pin, 2.77mm connector for serial port 1 (COM1)

25-pin connector for printer port (LPT 1)

15-pin connector for output to a CRT type monitor

10-pin, 2.0mm header for serial port 2 (COM2)

8-pin header for Ethernet activity signals on external LEDs

J11B/C

J12

Infrared (IrDA)

GPIO

Video (LVDS)

DNP

Ethernet 1

(LAN1)

USB 0 & 1

CPU Fan

5-pin header for Infrared (IrDA)

10-pin, 2.0mm header for general purpose I/O

30-pin, 2.0mm header for LVDS type video displays

Do not populate

8-pin RJ45 connector on Gigabit Ethernet port 1

8-pin USB jack provides USB0 and USB1 ports

3-pin header for fan, +12V, tachometer, ground

8-pin RJ45 connector on Gigabit Ethernet port 2

(LAN2)

USB 2 & 3

Audio In/Out

Serial 3 & 4

PCI Express

Utility

IDE

SATA 1

SATA 0

USB 4 & 5

System Fan

8-pin USB jack provides USB2 and USB3 ports

14-pin jack for 3.5 mm MIC In, Line Out, Line In connectors

20-pin, 2.0mm header for serial ports 3 and 4 (COM3 & COM4)

164-pin, 2.0mm slot for PCI Express

16-pin connector for PWR LED, IDE activity LED, Power switch, reset switch, PC speaker (Beep)

40-pin header for the IDE interface

7-pin Serial ATA connector

7-pin Serial ATA connector

10-pin, 2.0mm header for USB4 and USB5 ports

3-pin header for fan, +12V, tachometer, ground



J16

JP6

J15

J17

F2

J18

J5

J9

J6

J4

J8

J21

J2

J3

J20

F1

J1

J22

JP1 BT1

Figure 2-4. Connector and Header Locations

NOTE Pin-1 is shown as a black pin (square or round) in all connectors and jumpers in all illustrations.

Additional Components

Fuses F1 and F2, in

Table 2-3 , are shown in Figure 2-4

. Fuses F3 and F4 can be found on the back of the board.

Table 2-3. Additional Component Descriptions

Component Description

F1 (1.6A) Auto Reset Overcurrent Fuse for the USB 4 & 5 (J21)


F3 (1.1A) Auto Reset Overcurrent Fuse for the Keyboard/Mouse (J1)




Jumper Definitions

Table 2-4 describes the jumpers shown in

Figure 2-4 on page 10 .

Table 2-4. Jumper Settings

Jumper #

JP1 – CMOS Normal/Clear

JP2 – CPU Voltage Select

JP3 – Serial 3 (COM3) RS-485

Termination

JP3 – Serial 4 (COM4) RS-485

Termination

JP4 – LVDS Voltage Select

JP5 – Inverter Voltage Select

Installed

Normal (pins 1-2) Default

1.5V/533 FSB CPU (pins 1-2)

Termination (pins 1-2)

Termination (pins 3-4)

Removed/Installed

Clear (pins 2-3)

1.8V/400 FSB CPU (removed)

No Termination (removed)

*Default

No Termination (removed)

*Default

Enable +3.3V (pins 1-2) Default Enable +5V (pins 2-3)

+5V (pins 1-2) +12V (pins 2-3)

Note: *The jumper or shunt may be stored by connecting it to one of the pins for safe keeping.

Specifications

Power Specifications

Tables 2-5 and

2-6 list the power requirements for the MightyBoard 821 with 1.5 and 2.0 GHz CPUs.

Table 2-5. System Power Requirements (1.5 GHz CPU)

Parameter

In-rush Current

(Typical)

Idle

BIT* Current

(Typical)

+12.0VDC

Max: 8.00A (96.00W)

Min: 0.28A (3.36W)

1.20A (14.38W)

1.54A (18.47W)

Operating configurations:

• In-rush operating configuration includes 512MB DDR RAM, ATX power, CRT monitor, two SATA

HDDs and one IDE HDD each with WinXP Pro, keyboard and mouse.

• Idle operating configuration includes the same items as the in-rush configuration.

• BIT* = Burn-In-Test. Operating configuration includes Idle configuration as well as one serial port with loop-back, one parallel port with loop-back, two Ethernet connections, and four external USB flash drives.



Table 2-6. System Power Requirements (2.0 GHz CPU)

Parameter

In-rush Current

(Typical)

Idle

BIT* Current

(Typical)

+12.0VDC

Max: 5.84A (70.08W)

Min: 0.20A (2.40W)

0.97A (11.65W)

1.33A (16.00W)

Operating configurations:

• In-rush operating configuration includes 512MB DDR RAM, ATX power, CRT monitor, two SATA

HDDs and one IDE HDD each with WinXP Pro, keyboard and mouse.

• Idle operating configuration includes the same items as the in-rush configuration.

• BIT* = Burn-In-Test. Operating configuration includes Idle configuration as well as one serial loopback, one parallel port with loop-back, two Ethernet connections, and four external USB flash drives.

Environmental Specifications

Table 2-7 provides the most efficient operating and storage condition ranges required for this board.

Table 2-7. Environmental Requirements

Parameter

Operating

1.5GHz Celeron M Conditions

0° to +60°C

(+32° to +140°F)

2.0GHz Pentium M Conditions

0° to +60°C

(+32° to +140°F)

Storage –20° to +75°C

(–4° to +167°F)

–20° to +75°C

(–4° to +167°F)

Operating 5% to 90% relative humidity, non-condensing

Non-operating 5% to 95% relative humidity, non-condensing

5% to 90% relative humidity, non-condensing

5% to 95% relative humidity, non-condensing

Thermal/Cooling Requirements

The CPU, Memory Hub (Northbridge), I/O Hub (Southbridge), and voltage regulators are the sources of heat on the board. The MightyBoard 821 is designed to operate at its maximum CPU speed of 2.0GHz or

1.5GHz. Both CPU versions (Celeron M or Pentium M) and the Memory Hub (Northbridge) require a heatsink with a fan.



Physical Specifications

Table 2-8 shows the physical dimensions of the board, and Figure 2-5 shows the mounting dimensions and

connector locations.

Table 2-8. Weight and Footprint Dimensions

Item

Weight

Height (overall)

Width

Length

Thickness

Dimension

0.385kg. (0.85lbs.)

38.50mm (1.51")

170mm (6.69")

170mm (6.69")

1.57mm (0.062")

NOTE Overall height is measured from the upper board surface to the highest permanent component (Audio 3-in-1 stack) on the upper board surface. This measurement does not include the various heatsinks or DIMM sizes available for this board. The DIMM or heatsinks could increase this dimension.

Mechanical Specifications

Figure 2-5 shows the side view of the MightyBoard 821 with the mechanical mounting dimensions. Refer

also to the MightyBoard Design Library on the MightyBoard 821 Support Software DVD for more detailed dimensions.

Back Panel I/Os

Mouse (Green)

Keyboard (Purple)

Line In (Blue)

Line Out (Green)

MIC In (Pink)

Back Panel Bezel

MightyBoard 821

Figure 2-5. Back Panel Overview

Reference Manual 13



Chapter 3 Hardware

Overview

This chapter discusses the chips and features of the connectors in the following order:

• Interrupt Channel Assignments

• Memory Map

• I/O Address Map

• Serial Interfaces

• USB Interfaces

♦ USB 2.0 Support

♦ Legacy USB Support

• Video Interfaces

♦ LVDS Interface (J2)

• Infrared (IrDA)

• Utility Interface

♦

♦

♦

♦

External Power-On Switch

External Reset Switch

External Speaker (Beep)

External Power-On LED

♦ External IDE Activity LED

• Miscellaneous

♦

♦

♦

♦

♦

♦

Real Time Clock (RTC)

External Battery (BT1)

Temperature Monitoring

User GPIO Signals

Ethernet External LED

Serial Console

• Serial Console Setup

♦ Watchdog timer

• Power and Sleep States

♦

♦

Power-On Switch

Sleep States (ACPI)

NOTE Ampro Computers, Inc. supports only the features/options tested and listed in this manual. The main integrated circuits (chips) used in the MightyBoard 821 may provide more features or options than are listed for the MightyBoard 821, but some of these chip features/options are not supported on the board and may not function as specified in the chip documentation.



Interrupt Channel Assignments

The interrupt channel assignments are shown in Table 3-1

.

Table 3-1. Interrupt Channel Assignments

Device vs IRQ No.

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Timer D

Keyboard

Secondary Cascade

D

D

COM1

COM2

COM3

COM4

O D

D O

O

D

O D

D

O

Parallel

RTC

IDE

Math Coprocessor

D

D

D O

D PS/2 Mouse

PCI INTA

PCI INTB

PCI INTC

PCI INTD

PCI INTE

PCI INTF

PCI INTH

Automatically Assigned







D O O O Sound Blaster

USB

VGA

Ethernet




Legend: D = Default, O = Optional

NOTE The IRQs for the Ethernet, Video, and Internal LPC bus are automatically assigned by the BIOS Plug and Play logic. Local IRQs assigned during initialization can not be used by external devices.

Memory Map

The following table provides the common PC/AT memory allocations. These are DOS-level addresses. The

OS typically hides these physical addresses by way of memory management. Memory below 000500h is used by the BIOS.



Table 3-2. Memory Map

Base Address Function

00000000h - 0009FFFFh Conventional Memory

000A0000h - 000AFFFFh Graphics Memory

000B0000h 000B7FFFh Mono Text Memory

000B8000h 000BFFFFh Color Text Memory

000C0000h 000CFFFFh Standard Video BIOS

000E0000h 000FFFFFh System BIOS Area (Storage and RAM Shadowing)

00100000h 04000000h Extended Memory (If onboard VGA is enabled, then the amount of memory assigned is subtracted from extended memory.)

FFF80000h FFFFFFFFh System Flash

I/O Address Map

Table 3-3 shows the I/O address map. These are DOS-level addresses. The OS typically hides these physical

addresses by way of memory management.

Table 3-3. I/O Address Map

Address (hex)

000-00F

020-021

040-043

060-06F

070-07F

080-09F

092

094

102

0A0-0BF

0C0-0DF

0F0-0FF

1F0-1F8

278-27F

2E8-2FF

2F8-2FF

378-37F

3C0-3DF

3E8-3EF

3F8-3FF

778-77A

CF8-CFF

Subsystem

Primary DMA Controller

Master Interrupt Controller

Programmable Interrupt Timer (Clock/Timer)

Keyboard Controller

CMOS RAM, NMI Mask Reg, RT Clock

DMA Page Registers

Fast A20 gate and CPU reset

Motherboard enable

Video subsystem register

Slave Interrupt Controller

Slave DMA Controller #2

Math Coprocessor

IDE Hard Disk Controller

Parallel Port

Serial Port 4 (COM4)


Parallel Port (Standard and EPP)

VGA



Parallel Port (ECP Extensions) (Port 378+400)

PCIe bus Configuration Address and Data



Serial Interfaces

The Super I/O (W83627HF) chip and the LPC UART controller (F81216D) provide the circuitry for the four serial ports. The Super I/O chip provides serial ports 1 and 2 through connector J3 and header J6 respectively. The LPC UART controller provides serial ports 3 and 4 through header J15. The four serial ports support the following features:

• Four individual 16550-compatible UARTs

• Programmable word length, stop bits and parity

• 16-bit programmable baud rate generator

• Interrupt generator

• Loop-back mode

• Four individual 16-bit FIFOs

• Serial Ports 1 and 2

♦

♦

Serial Port 1 (COM1) supports RS232 and full modem support

Serial Port 2 (COM2) supports RS232, full modem support, and IrDA

• Serial B Interface

♦

♦

Serial Port 3 (COM3) supports RS232/RS485/RS422 and full modem support

Serial Port 4 (COM4) supports RS232/RS485/RS422

NOTE The RS232/RS485/RS422 modes are selected in BIOS Setup under BIOS and

Hardware Settings menu for Serial ports 3 (COM3) and 4 (COM4). However, the RS232 mode is the default (Standard) for any serial port.

RS485 mode termination is selected with jumper JP3, pins 1-2 (COM3), and pins

3-4 (COM4), when the RS485 mode is selected in BIOS Setup.

To implement the two-wire RS485 mode on serial ports 3 or 4, you must tie the equivalent pins together for the selected port.

For example, on Serial Port 3, tie pins 3 to 5 and pins 4 to 6 at the Serial B interface connector as shown in

Figure 3-1 . As an alternate, tie pins 2 to 3 and pins 7 to 8 at the DB9 serial connector for serial port 3 as

shown in

Figure 3-1

. Refer to the following tables for the specific pins for serial ports 3 and 4 on the serial B connector. The RS422 mode uses a four-wire interface and does not need any pins tied together, but you must select RS485 mode in BIOS Setup.

19 9 7 5 3 1 1 2 3 4 5

Serial B Interface (J15) for Serial Port 3

(or COM3 Port)

Top View 20 10 8 6 4 2

Or

Standard DB9 Serial

Port Connector (Female)

Rear View

6 7 8 9

Figure 3-1. RS485 Serial Port Implementation

Table 3-4 lists the pin-outs for the Serial Port 2 (COM 2) interface header (J6) . Table 3-4 lists the pin-outs

for Serial Ports 3 and 4 (COM 3 and COM 4) interface header (J15).



Table 3-4. Serial 2 (COM2) Interface Pin/Signal Descriptions (J6)

Pin #

1

Pin #

DB9

1

Signal Description

2

3

4

5

6

7

8

9

10

6

2

7

3

8

4

9

5

NC

DCD2* Data Carrier Detect 2 – Indicates external serial communications device is detecting a carrier signal (i.e., a communication channel is currently open).

In direct connect environments, this input will be driven by DTR2 as part of the DTR2/DSR2 handshake.

DSR2* Data Set Ready 2 – Indicates external serial communications device is powered, initialized, and ready. Used as hardware handshake with DTR2 for overall readiness to communicate.

RXD2 Receive Data 2 – Serial port 2 receive data in

RTS2* Request to Send 2 – Indicates Serial port 2 is ready to transmit data. Used as hardware handshake with CTS2 for low level flow control.

TXD2 Transmit Data 2 – Serial port 2 transmit data out

CTS2* Clear to Send 2 – Indicates external serial communications device is ready to receive data. Used as hardware handshake with RTS2 for low level flow control.

DTR2* Data Terminal Ready 2 – Indicates Serial port 2 is powered, initialized, and ready. Used as hardware handshake with DSR2 for overall readiness to communicate.

RI2* Ring Indicator 2 – Indicates external serial communications device is detecting a ring condition. Used by software to initiate operations to answer and open the communications channel.

GND

NC

Ground

Not connected

Note: The shaded area denotes power or ground.

Table 3-5. Serial 3 and 4 (COM3 and COM4) Interface Pin/Signal Descriptions (J15)

Pin # Pin #

DB9

1


1(COM3) DCD3* Data Carrier Detect 3 – Indicates external serial communications device is detecting a carrier signal (i.e., a communication channel is currently open). In direct connect environments, this input will be driven by DTR3 as part of the DTR3/DSR3 handshake.

2 6

3 2

DSR3* Data Set Ready 3 – Indicates external serial communications device is powered, initialized, and ready. Used as hardware handshake with

DTR3 for overall readiness to communicate.


4

5

7

3

RX3-

RTS3*

TX3+

TXD3

RX3- – If in RS485 or RS422 mode, this pin is Receive Data 3 -.

Request To Send 3 – Indicates Serial port 3 is ready to transmit data.

Used as hardware handshake with CTS3 for low level flow control.

TX3+ – If in RS485 or RS422 mode, this pin is Transmit Data 3 +.

Transmit Data 3 – Serial port 3 transmit data out

TX3TX3- – If in RS485 or RS422 mode, this pin is Transmit Data 3 -.



Table 3-5. Serial 3 and 4 (COM3 and COM4) Interface Pin/Signal Descriptions (J15)

6 8 CTS3* Clear To Send 3 – Indicates external serial communications device is ready to receive data. Used as hardware handshake with RTS3 for low level flow control.

7

8

9

10

11

12

13

14

15

16

17

18

19

20

4

9

5

NC

1

(COM4)

6

2

7

3

8

4

9

5

NC

RX3+ RX3+ – If in RS485 or RS422 mode, this pin is Receive Data 3 -.


RI3* Ring Indicator 3 – Indicates external serial communications device is detecting a ring condition. Used by software to initiate operations to answer and open the communications channel.

GND

NC

Ground

Not connected

DCD4* Data Carrier Detect 4 – Indicates external serial communications device is detecting a carrier signal (i.e., a communication channel is currently open). In direct connect environments, this input will be driven by DTR4 as part of the DTR4/DSR4 handshake.

DSR4* Data Set Ready 4 – Indicates external serial communications device is powered, initialized, and ready. Used as hardware handshake with

DTR4 for overall readiness to communicate.


RX4-

RTS4*

TX4+

TXD4

RX4- – If in RS485 or RS422 mode, this pin is Receive Data 4 -.

Request To Send 4 – Indicates Serial port 4 is ready to transmit data.

Used as hardware handshake with CTS4 for low level flow control.

TX4+ – If in RS485 or RS422 mode, this pin is Transmit Data 4 +.

Transmit Data 4 – Serial port 4 transmit data out

TX4-

CTS4*

TX4- – If in RS485 or RS422 mode, this pin is Transmit Data 4 -.

Clear To Send 4 – Indicates external serial communications device is ready to receive data. Used as hardware handshake with RTS4 for low level flow control.

RX4+ RX4+ – If in RS485 or RS422 mode, this pin is Receive Data 4 +.


NC

GND

NC

Not connected

Ground

Not connected

Note: The shaded area denotes power or ground. Signals are listed in the following order: RS232 followed by RS485/RS422

Keyboard/Mouse Interfaces

Keyboard Interface

The Super I/O chip (W83627HF) provides the signal lines for the PS/2 keyboard through the keyboard connector (J1A), which is fully PC/AT compatible.



Mouse Interface

The Super I/O chip (W83627HF) provides the signal lines for a PS/2 mouse through the mouse connector

(J1B).

USB Interfaces

The I/O Hub (82801DBM) provides the USB solution for both legacy UHCI controllers and EHCI controller

(USB 2.0) support. The I/O Hub (Southbridge) contains port-routing logic that determines which controller

(UHCI or EHCI) handles the USB data signals. The PC-style (or Standard) connector (J11 B and C) provides two of the four USB ports, USB0 and USB1. The other PC-style (or Standard) connector (J13 B and C) provides the other two USB ports, USB2 and USB3. The Super I/O provides USB 4 and 5 on the J21 header.

USB 2.0 Support

The I/O Hub (Southbridge) contains an Enhanced Host Controller Interface (EHCI) compliant host controller, which supports up to four high-speed USB 2.0 Specification compliant root ports. The higher speed USB 2.0 specification allows data transfers up to 480 Mbps using the same pins as the four full-speed/ low-speed USB UHCI ports. The I/O Hub (Southbridge) port-routing logic determines which of the controllers (UHCI or the EHCI) processes the USB signals. The Super I/O provides USB 4 and 5 on the J21 header.

• One EHCI host controller for all four USB ports on connectors

• Supports USB v2.0 Specification

• Over-current fuses, located on the board, where USB0 and USB1 share a single fuse (F2), USB2 and

USB3 share a single fuse (F4), and USB4 and USB5 share a single fuse (F1). See

Table 2-3 on page 10

.

Legacy USB Support

The I/O Hub (Southbridge) supports two USB Universal Host Controller Interfaces (UHCI) and each Host

Controller includes a root hub with two separate USB ports each, for a total of four USB ports. The USB

Legacy features implemented in the USB ports include the following:

• One root hub and two USB ports on connector

• One root hub and two USB ports on connector

• Supports USB v1.1 and UHCI v1.1 with integrated physical layer transceivers

• Supports improved arbitration latency for UHCI controllers

• UHCI controllers support Analog Front End (AFE) embedded cell instead of USB I/O buffers to allow for USB high-speed signaling rates

• Three shared over-current fuses, located on the board, are used on all six USB ports

USB4 and USB5

Table 3-6 describes USB 4 & 5 J21 with 10-pins, two rows, Odd/even (1, 2) and 2mm pin spacing.

Table 3-6. USB Ports 4 & 5 Interface Pin/Signal Descriptions (J21)

3

5

Pin #

1, 2

4

Signal

+5V

USBP3-

USBP3+

USBP4-

Description

+5V through a fuse (F3). Also over current monitor line.

Universal Serial Bus 2 Negative

Universal Serial Bus 2 Positive

Universal Serial Bus 3 Negative



Table 3-6. USB Ports 4 & 5 Interface Pin/Signal Descriptions (J21) (Continued)

6 USBP4+ Universal Serial Bus 3 Positive

7, 8, 9, 10 GND Ground


Audio Interface

The audio solution on the MightyBoard 821 is provided by the I/O Hub, 82801DBM (Southbridge) and the on-board Audio CODEC (ALC202A). These two chips use a digital interface to communicate between the two, which is defined by AC’97 and is revision 2.3 compliant. The input or output signals for the audio interface go through the 14-pin jack (J14), which has the respective audio connections.

Audio CODEC (ALC202A) features

• AC’97 Rev 2.3 compliant

• 18-bit full duplex performance

• Variable sampling rate at 1Hz resolution

• Stereo (Left and Right) Line In

• Stereo (Left and Right) Line Out

• Microphone (mono) in

• PC Beep speaker signal also fed to CODEC for the Line Out (Left and Right) channels

Video Interfaces

The Memory Hub, 82915GM (Northbridge) provides the graphics control and video signals to the traditional CRT monitors and the LVDS flat panel displays. The Memory Hub (Northbridge) features are listed below:

Supports 2D/3D graphics with extensive set of instructions including:

• 3D rendering and display

• BLT operations

• MPEG2 decode acceleration

• 3D overlay

CRT features:

• Supports an integrated 400-MHz, 24-bit RAMDAC to drive a progressive scan analog monitor and outputs to three 8-bit DACs provide the R, G, and B signals to the monitor

• Supports resolutions up to 1600 x 1200 at 85-Hz refresh, or up to 2048x1536 at 75-Hz refresh

• Supports a maximum allowable video frame buffer size of 64MB UMA (Unified Memory Architecture)

LVDS Flat Panel features:

• Supports an integrated dual channel LFP Transmitter interface

• Supports LVDS LCD panel resolutions up to UXGA

• Supports a maximum pixel format of 18 bpp (with SSC supported frequency range from 25 MHz to 112

MHz (single channel/dual channel)

• Supports 1 or 2 channel LVDS outputs

• The 82915GM chip only supports the LVDS port on Pipe B of two pipelines

• Supports the LVDS port independently or simultaneously with the Analog Display (CRT) port



• Supports Spread Spectrum Clocking; center and down spread support utilizing an external SSC clock

• Supports panel up-scaling (to fit a smaller source image onto a specific native panel size) as well as panning and centering CRT Interface

LVDS Interface

Table 3-7. LVDS Interface Pin/Signal Descriptions (J2)

5

6

3

4

27

28

29

30

23

24

25

26

19

20

21

22

15

16

17

18

11

12

13

14

7

8

9

10

Pin #

1

2

Signal

+12V

VCC_LCD

Description

JP5 = +5 or +12V source

JP4 = +3.3 or +5V source

Line

GND

GND

LVDSB_Clk+

LVDSB_Clk-

NC

NC

LVDSB_Y2+

LVDSB_Y2-

LVDSB_Y1+

LVDSB_Y1-

LVDSB_Y0+

LVDSB_Y0-

LVD_BKLTCtl

LCD_EN

LVDSB_Clk+

LVDSB_Clk-

NC

NC

LVDSB_Y2+

LVDSB_Y2-

LVDSB_Y1+

LVDSB_Y1-

LVDSB_Y0+

LVDSB_Y0-

Ground

Ground

Gnd

Clock Positive Output Clk

Clock Negative

Output

Not Connected

Not Connected

Data Positive Output

Data Negative Output





Backlight Control

LCD Enable



Not Connected

Not Connected







LVDS_DDCPClk Clock

LVDS_DDCPData Data

LVD_BKLEN Backlight Enable

3

2

1

0

Clk

3

2

1

0

Channel

Channel 1

Channel 2


NOTE Pins 5-14 constitute 1st channel interface of two channels, or a single channel interface. Pins

17-26 constitute 2nd channel interface of two channels.



Utility Interface

External Power-On Switch

This control signal is provided externally through a switch by connecting ground pin 8 to pin 6 on the Utility connector (J17).

External Reset Switch

This control signal is provided through an external switch by connecting ground pin 12 to pin 10 on the

Utility connector.

NOTE To perform the equivalent of a power-on reset, the reset button must be pressed and held for a minimum of three seconds.

External Speaker (Beep)

The Beep signals from the I/O Hub (82801FB) and the Super I/O (W83627HF) are fed to pin 13 of the

Utility connector through an OR circuit, in conjunction with +5V (pin 7), and drives an external PC Beep speaker. The PC Beep speaker signal from the I/O Hub (Southbridge) is also fed to the on-board Audio

CODEC (ALC202A) to provide a PC Beep signal for the Line out connections.

External Power-On LED

This indicator signal is fed to pin 1 and pin 5 of the Utility connector for an external LED to indicate power is applied to the MightyBoard 821.

External IDE Activity LED

This indicator signal is fed to pin 2 and pin 4 of the Utility connector for an external LED to indicate power is applied to the MightyBoard 821.

Table 3-8. Utility Interface Pin/Signal Descriptions (J17)

Pin #

1

2, 3

4


PwrLED Power-On LED – External Power-On LED is connected between +5 Volts

through 330 ohm resistor at pin 1, to ground at pin 5.

VCC + 5 Voltage – Goes to +5 volts through 330-ohm resistor.

IDELED IDE Activity LED – External IDE Activity LED connection from Primary IDE channel through Or circuit. Connect external Power-On LED between pin 2 (+5 V) and pin 4 (IDE_LED).

5, 8, 12 GND

6

Ground

PWRSW Power-On Switch – Connects external Power-On switch between pin 6 and ground at pin 8.

7

9, 11,

14, 15,

16

10

VCC

NC

RST

+5 volts – Provides +5 volts to external device (PC “Beep” speaker).

Not connected

13 SPK

Reset Switch – External Reset switch connection sends reset signal to Super I/O chip. Connect external Reset Switch between pin 10 and ground, pin 12.

PC Speaker (Beep) – Provides PC beep speaker output to external speaker. Connect external PC Beep Speaker between pin 7 (+5V) and pin 13.




Miscellaneous

Real Time Clock (RTC)

The MightyBoard 821 contains a Real Time Clock (RTC). The CMOS RAM is backed up with a Lithium

Battery. If the battery is not present, the BIOS has a battery-free boot option to complete the boot process.

External Battery (BT1)

An external battery input connection is provided through the battery connector (BT1) for an external battery.

The external battery is used to power the Real Time Clock. Ampro provides a small Lithium Battery, taped to the Super I/O (U5) with adhesive tape, and connected to the external battery connection (BT1). This small external Lithium battery serves as an on-board battery.

Temperature Monitoring

The Super I/O chip (W83627HF) performs the temperature monitoring function. The inputs to the Super

I/O chip come from the thermal diode in the Intel Celeron M or Pentium M CPU and a single thermistor

(RT2) on the underside of the MightyBoard near pin 4 of the Infrared (IrDA) connector (J7).

NOTE The MightyBoard 821 requires a heatsink with a fan for both CPU versions (Intel

Celeron M or Pentium M) and the Memory Hub (Northbridge).

User GPIO Signals (J8)

The MightyBoard 821 provides ten GPIO pins, including power and ground, for custom use, and the signals are routed to the J8 connector. Enable and initialize values are set in the BIOS. An example of how to use the

GPIO pins resides in the Miscellaneous Source Code Examples on the MightyBoard 821 Support Software

DVD.

The example program can be built by using the make.bat file. This produces a 16-bit DOS executable application, gpio.exe, which can be run on the MightyBoard 821 to demonstrate the use of GPIO pins. For more information about the GPIO pin operation, refer to the Programming Manual for the Super I/O

(W83627HF) controller at: http://www.nuvoton-usa.com/products/winbond_products/pdfs/PCIC/W83627HF_HGb.pdf

Table 3-9. User GPIO Signals Pin/Signal Descriptions (J10)

8

9

10

6

7

4

5

2

3

Pin # Signal Description

1 GND Ground

VCC +5 Volts DC

GP13 User defined




Ethernet External LED

This header is for an external LED for Ethernet power and activity.

Table 3-10. Ethernet External LED Pin/Signal Descriptions (JP6)

6

7

4

5

8

2

3

Pin #

1

Signal

ACT#1

ACT#2

LINK#1

LINK#2

VCC3

Description

Ethernet Activity 1

Ethernet Activity 2

Ethernet Link 1

Ethernet Link 2

+3 volts – Provides +3 volts to external LED

LEDP2 LED positive 2

SPEED1 LED speed 1

SPEED2 LED speed 2


Serial Console

The MightyBoard 821 supports the serial console (or console redirection) feature. This I/O function is provided by an ANSI-compatible serial terminal, or the equivalent terminal emulation software running on another system. This can be very useful when setting up the BIOS on a production line for systems that are not connected to a keyboard and display.

Infrared (IrDA) Port

The Infrared Data Association (IrDA) port provides a two-way wireless communications port using infrared as a transmission medium at the basic level. There are two basic infrared implementations provided; the

Hewlett-Packard Serial Infrared (HPSIR) and the Amplitude Shift Keyed Infrared (ASKIR) methods.

HPSIR is a serial implementation of infrared developed by Hewlett-Packard. The control of the IrDA port

(HPSIR and ASKIR) is Operating System specific and not configured in the BIOS Setup Utility. Typically, the IrDA port shares the same control signals and IRQ settings with Serial Port 2.

The HPSIR method allows serial communication at baud rates up to 115k baud. Each word is sent serially beginning with a zero value start bit. A zero is sent when a single infrared pulse is sent at the beginning of the serial bit time. A one is sent when no infrared pulse is sent during the bit time.

The Amplitude Shift Keyed infrared (ASKIR) allows serial communication at baud rates up to 19.2k baud.

Each word is sent serially beginning with a zero value start bit. A zero is sent when a 500kHz waveform is sent for the duration of the serial bit time. A one is sent when no transmission is sent during the serial bit time.

Both of these methods require an understanding of the timing diagrams provided in the Super I/O controller

(W83627HF) specifications available from the manufacture’s web site and referred to earlier in this manual.

For more information, refer to the W83627HF chip databook and the Infrared Data Association web site at http://www.irda.org

.

NOTE For faster speeds and infrared applications not covered in this brief description, refer to the W83627HF chip specifications by Nuvoton.

Table 3-11. Infrared (IrDA) Interface Pin/Signal Descriptions (J7)

Pin # Signal

1 VCC

2

3

IRTX

CIRRX

Description

+5 volts

IR Transmit Data

IR Mode Select



Table 3-11. Infrared (IrDA) Interface Pin/Signal Descriptions (J7) (Continued)

4

5

IRRX

GND

IR Receive Data

Ground


Watchdog Timer

The watchdog timer (WDT) restarts the system if a mishap occurs. Possible problems include failure to boot properly, the application software’s loss of control, unexpected conditions on the bus, or other hardware or software malfunctions.

The WDT (watchdog timer) can be used both during the boot process and during normal system operation.

• During the Boot process – If the operating system fails to boot in the time interval set in the BIOS, the system will reset.

Enable the WDT in the Advanced BIOS Features of BIOS Setup. Set the WDT for a time-out interval in seconds, between 2 and 255, in one second increments. Ensure you allow enough time for the operating system (OS) to boot. The OS or application must tickle the WDT before the timer expires.

• During System Operation – An application can set up the WDT hardware through a BIOS call, or by accessing the hardware directly. Some Ampro Board Support Packages provide an API interface to the

WDT. The application must tickle the WDT before the timer expires or the system will be reset. The

BIOS implements interrupt 15 function 0C3h to manipulate the WDT.

• Watchdog Code examples – Ampro has provided source code examples on the MightyBoard 821

Support Software DVD illustrating how to control the WDT. (Refer to the WDT Readme file in the

Miscellaneous Source Code Examples subdirectory, under the MightyBoard 821 Software menu on the

MightyBoard 821 Support Software DVD.)

Power Interfaces

ATX Power Supply Interface

The power supply interface, J2, uses a 20-pin interface that connects directly to a standard ATX power supply. The MightyBoard 821 requires +12 volts for operation and all the onboard voltages, including the

CPU core voltages, are derived from the externally supplied +12 volts DC +/- 5%. The ATX power supply interface provides -5V, -12V, +5V, +3.3V and +12V to the MightyBoard 821, but not all interface pins are

connected at the MightyBoard 821. Refer to the Table 3-12

for more information.

Table 3-12

shows the pin signals for power interface (J2), which has 20-pins, two rows, consecutive (1, 11) with 0.165" (4.2mm) pin spacing.

Table 3-12. ATX Power Supply Interface Pin/Signal Descriptions (J2)

8

9

Pin #

1, 2, 11

3, 5, 7

4, 6,

19, 20

10

12

Signal

+3.3

Description

+3.3 volts – This voltage used for PCI bus.

GND Ground

+5V

NC

+5 volts +/- 5% – This is the main input voltage to the MightyBoard and it generates the other voltages used on the MightyBoard 821.

Not connected (Power Ok or Good)

5VSB +5V, 100mA Standby voltage – Input to MightyBoard from ATX type power supply to power specific components on the board during standby.

+12V +12 volts +/- 5% – This provides voltage to the CPU Fan, LCD backlite supply and PCI bus.

-12V -12 volts – This voltage goes to PCI bus only



Table 3-12. ATX Power Supply Interface Pin/Signal Descriptions (J2) (Continued)

13, 15

14

16, 17

18

GND

PS-On

GND

NC

Ground line

Power Supply On – This signal turns on and off the ATX power supply.

Ground line

Not connected (-5.0 volts)


Optional CPU Fan

The MightyBoard 821 has an optional CPU fan connector for those environmental situations where customers may require it.

Table 3-13. Optional CPU Fan Interface Pin/Signal Descriptions (J12)

2

3


1 DET Fan Speed Detect – This is the fan speed tachometer signal.

+12 +12 volts DC +/- 5%

GND Ground


Optional System Fan

The MightyBoard 821 has an optional system fan connector for those environmental situations where customers may require it.

Table 3-14. Optional System Fan Interface Pin/Signal Descriptions (J22)

2

3


1 DET Fan Speed Detect – This is the fan speed tachometer signal.

+12 +12 volts DC +/- 5%

GND Ground


Power and Sleep States

The following information only applies to the MightyBoard 821, if an ATX power supply is used to provide power. If a non-ATX power supply is used, then the MightyBoard 821 is only controlled by the

Power-On/Off switch on the power supply and the various sleep states are not available.

Power-On Switch

The Power-On switch turns the MightyBoard 821 and its attached power supply to a fully On condition, if you are using an ATX power supply. Normally, if the operating system (OS) supports sleep states, the OS will turn off the MightyBoard 821 and its power supply during the OS shut down process. If the OS supports sleep states, the Power-On button will also transition the MightyBoard 821 and its power supply between a fully Powered On state, various sleep states depending on the OS control setting, and a fully Powered Off state. If the OS does not support sleep states, then the Power-On button only turns power on or off to the

MightyBoard 821.

The sleep states are OS dependent and not available if your OS does not support power management based on the ACPI standard. An OS supporting ACPI will allow the Power-On button to be configured through a user interface.



The Power-On Switch is provided externally by connecting a momentary switch between pins 1 and 2 on the

Utility connector (J17). The Power-On signal occurs when ground is placed on pin 6 of J17.

Sleep States (ACPI)

The MightyBoard 821 supports the ACPI (Advanced Configuration and Power Interface) standard, which is a key component of certain Operating Systems’ power management. The supported features (sleep states) listed here are only available when an ACPI-compliant OS is used for the MightyBoard, such as Windows

2000/XP. The term “sleep” state refers to a reduced power consumption state, which can be re-started

(awakened), restoring full operation to the MightyBoard 821.

In these various sleep states, the MightyBoard 821 appears to be off, indicated by such things as no display on the attached monitor and no activity for the connected CD-ROM or hard drives. However, when the

MightyBoard 821 detects certain types of activity (i.e. power button, mouse, keyboard, or LAN activity), it returns to a fully operational state. The type of activity detected is based on those supported by the

MightyBoard 821.

The MightyBoard 821 supports at least four ACPI power states, depending on the operating system used and its ability to manage sleep states. Typically, the Power-On switch is used to wake up from a sleep state, or transition from one state to another, but this is dependent on the operating system.

• 1st state is normal Power-On (S0).

♦

♦

To go to a fully powered on state, the MightyBoard 821 must either be powered Off (S5), or in a sleep state (S1 or S4), and then the Power On/Off switch is pressed for less than 4 seconds

(default).

The MightyBoard 821 can transition from this state (S0) to the various states described below, depending on the power management capability of the OS and how it is programmed.

• 2nd state is a standby state (S1).

In this state, no internal operations take place except for the internal RTC (real time clock) and the contents of RAM. This typically includes no activity for the CPU, CD-ROM, or hard disk drives. The

CPU may be active, and the peripheral devices may power down if no signals occur or power to the device(s) is not provided. The MightyBoard 821 appears to be off including the Power-On LED.

♦ Normally, to enter this sleep state, the MightyBoard 821 must be fully powered on (S0) while the

OS transitions the MightyBoard into this standby state (S1) under user control.

♦ To exit this sleep state, typically the power button is used to wake up the MightyBoard 821 to restore full operation, including the Power-On LED. Typically, pressing the power switch for less than 4 seconds (default) will restore full operation.

• 3rd state is Suspend to RAM or Standby [Windows] (S3).

In this state, main memory (RAM) and the internal RTC (real time clock) are the only devices where power is maintained. This state (Suspend to RAM) stores the state of the operating prior to shutdown including all open applications and open documents, etc. in main memory. This allows users to resume their work exactly where they left off just prior to entering this state (S3) when the system restores power and the contents of main memory.

This state takes longer to restore and uses less power than S1 or S2, but if AC power is completely lost, the contents of main memory (RAM), including any changes to documents or data stored in RAM during S3, is also lost.

♦

♦

To enter the Suspend to RAM (S3) or Standby state, the computer must be fully powered on and the

OS transitions the computer into this sleep state under user control.

To exit this sleep state, typically pressing the Power On switch for less then 4 seconds (default) will restore full operation.

• 4 th

state is a hibernate or suspend-to-disk state (S4).

In this state, no internal operations take place, except for the internal RTC. This includes no activity for the CPU, CD-ROM, or hard disk drives. The MightyBoard 821 appears to be off, including the external



Power-On LED if connected. Your system will take longer to wake-up in this sleep state, however, since your data is saved to the disk, it is more secure and should not be lost in the event of a power failure.

♦ To enter a hibernate or suspend-to-disk state, the MightyBoard 821 must be fully powered on while the OS transitions the MightyBoard 821 into this sleep state (S4) under user control.

♦ To exit this sleep state, typically pressing the power switch for less than 4 seconds (default) will restore full operation.

• 5 th state is the normal power off or shutdown (S5).

All activity stops, except the internal clock, if there is a backup battery installed. Removing the power cord from the power source ensures all activity is stopped, except the internal clock.

♦ To go to a fully powered down state, the MightyBoard 821 must either be powered on, or in a sleep state, and then the Power On/Off switch is pressed for more than 4 to 6 seconds.

♦ To go to a fully powered up state, press the power switch for less than 4 seconds (default) and full operation is restored.

The OS may provide additional programming features to change the activation time for each state, and to shutdown or transition the MightyBoard 821 at certain times, depending on the way the OS interface is programmed. Refer to the OS vender’s documentation for power management under the ACPI standard.


Chapter 4 BIOS Setup

Introduction

This section assumes the user is familiar with general BIOS Setup. Refer to the appropriate PC reference manuals for information about the onboard ROM-BIOS software interface. If Ampro has added to or modified the standard functions, these functions will be described.

Entering BIOS Setup (VGA Display)

To access BIOS Setup using a VGA display for the MightyBoard 821:

1. Turn on the VGA monitor and the power supply to the MightyBoard 821.

2. Start Setup by pressing the [Del] key, when the following message appears on the boot screen.

Hit <Del> if you want to run SETUP

NOTE If the setting for Quick Boot is [Enabled], you may not see this prompt appear on screen. If this happens, press the <Del> key early in the boot sequence to enter

BIOS Setup.

3. Use the <Enter> key to select the screen menus listed in the Opening BIOS screen.

4. Follow the instructions at the lower right of each screen to navigate through the selections and modify any settings.

Entering BIOS Setup (Remote Access)

After you set up the BIOS Utility for Remote Access (serial console or console redirection) in VGA mode, entering the BIOS Setup while in remote access mode is very similar to the steps you use to enter BIOS

Setup with a VGA display.

1. Turn on the power supply to the MightyBoard 821 and enter the BIOS Setup Utility in VGA mode.

2. Set the BIOS feature Remote Access to [Enable] under the Advanced menu.

3. Accept the default options or make your own selections for the balance of the Remote Access fields and record your settings.

4. Ensure you select the type of remote serial terminal you will be using and record your selection.

5. Select Save Changes and Exit and then shut down the MightyBoard 821.

6. Connect the remote serial terminal (or the PC with communications software) to the COM port you selected and recorded earlier in the BIOS Setup Utility.

7. Turn on the remote serial terminal (or the PC with communications software) and set it to the settings you selected and recorded earlier in the BIOS Setup Utility.

The default settings for the MightyBoard 821 are:

♦ COM1

♦

♦

115200

8 bits

♦

♦

♦

♦

1 stop bit no parity no flow control

[Always] for Redirection After BIOS POST


Chapter 4

8. Restore power to the MightyBoard 821 and look for the screen prompt shown below.

Hit ^C if you want to run SETUP

9. Press the F4 key to enter Setup (early in the boot sequence if Quick Boot is set to [Enabled].)

If Quick Boot is set to [Enabled], you may never see the screen prompt.

10. Use the <Enter> key to select the screen menus listed in the Opening BIOS screen.

NOTE The serial console port is not hardware protected. Diagnostic software that probes hardware addresses may cause a loss or failure of the serial console functions.

BIOS Setup

Logo screen

The MightyBoard 821 BIOS supports a graphical logo screen, which can be customized by the user and displayed when enabled through the BIOS Setup Utility. The graphical image can be a company logo or any custom image the user wants to display during the boot process. The custom image can be displayed as the first image displayed on screen during the boot process and remain there, depending on the options selected in BIOS Setup, while the OS boots.

Logo Screen Image Requirements

The user’s image may be customized with any image editing tool, and the system will automatically convert the image into an acceptable format to the tools (files and utilities) provided by Ampro. The

MightyBoard 821 Logo Screen utility supports the following image formats:

• Bitmap image

♦

♦

16-Color, 640x480 pixels


• JPG image

♦

♦



♦ 256-Color, 1024x768 pixels

• PCX image

♦ 256-Color, 640x480 pixels

• A file size of not greater than 40kB

NOTE For procedures on loading custom images, see the logo screen utility document available on the Ampro website.


Appendix A Technical Support

Ampro Computers, Inc. provides a number of methods for contacting Technical Support listed in the

Table A-1

below. Requests for support through the Ask an Expert are given the highest priority, and usually will be addressed within one working day.

• Ampro Ask an Expert – This is a comprehensive support center designed to meet all your technical needs. This service is free and available 24 hours a day through the Ampro web site at http:// ampro.custhelp.

This includes a searchable database of Frequently Asked Questions, which will help you with the common information requested by most customers. This is a good source of information to look at first for your technical solutions. However, you must register online if you wish to use the Ask a

Question feature.

• Personal Assistance – You may also request personal assistance by creating an Ask an Expert account and then going to the Ask a Question feature. Requests can be submitted 24 hours a day, 7 days a week.

You will receive immediate confirmation that your request has been entered. Once you have submitted your request, you must log in to go to My Stuff area where you can check status, update your request, and access other features.

• InfoCenter – This service is also free and available 24 hours a day at the Ampro web site at http:// www.ampro.com

. However, you must sign up online before you can login to access this service.

The InfoCenter was created as a resource for embedded system developers to share Ampro's knowledge, insight, and expertise. This page contains links to White Papers, Specifications, and additional technical information.

Table A-1. Technical Support Contact Information

Method

Ask an Expert

Web Site

Standard Mail

Contact Information http://ampro.custhelp.com

http://www.ampro.com

Ampro Computers, Incorporated

5215 Hellyer Avenue

San Jose, CA 95138-1007, USA


Appendix A Technical Support


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