Ampro Corporation MightyBoard 821 User 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 Reason for Change Date

A, A Initial Release Dec/06

A, B Correction to move pin 1 on J21 Feb/07

A, C Removed reference to Design Library in

Mechanical Specifications

B, A Removed TV-Out; added LAN LED

jumper pins; corrected block diagram;

added reference to Design Library back

into Mechanical Specification

Dec/07

Aug/08

Ampro Computers, Incorporated
5215 Hellyer Avenue
San Jose, CA 95138-1007
Tel. [phone]
Fax [phone]
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. Major Component Descriptions and Functions ....................................................... 8

Table 2-2. Connector and Header Descriptions ....................................................................... 9

Table 2-3. Additional Component Descriptions ...................................................................... 10

Table 2-4. Jumper Settings .................................................................................................... 11

Table 2-5. System Power Requirements (1.5 GHz CPU)....................................................... 11

Table 2-6. System Power Requirements (2.0 GHz CPU)....................................................... 12

Table 2-7. Environmental Requirements ................................................................................ 12

Table 2-8. Weight and Footprint Dimensions ......................................................................... 13

Table 3-1. Interrupt Channel Assignments ............................................................................. 16

Table 3-2. Memory Map ......................................................................................................... 17

Table 3-3. I/O Address Map ................................................................................................... 17

Table 3-4. Serial 2 (COM2) Interface Pin/Signal Descriptions (J6) ........................................ 19

Table 3-5. Serial 3 and 4 (COM3 and COM4) Interface Pin/Signal Descriptions (J15).......... 19

Table 3-6. USB Ports 4 & 5 Interface Pin/Signal Descriptions (J21) ...................................... 21

Table 3-7. LVDS Interface Pin/Signal Descriptions (J2) ......................................................... 23

Table 3-8. 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

Mini-ITX

Full Size

PCI Slot

PCI Slot

PCI Slot

(MightyBoard)

PCI Slot

6.7" x 6.7"

ATX

9.6" x 12"

Flex ATX 7.5" x 9"

Micro ATX

9.6" x 9.6"

Figure 2-1. MightyBoard and ATX Style Boards Compared

MightyBoard 821 Reference Manual 3

Chapter 2 Product Overview

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

4 Reference Manual MightyBoard 821

Chapter 2 Product Overview

♦

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

MightyBoard 821 Reference Manual 5

Chapter 2 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

6 Reference Manual MightyBoard 821

Chapter 2 Product Overview

Block Diagram

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

Intel

CRT VGA

LVDS LCD

Ethernet

Controller(2)

82573V

Pentium M
or Celeron M
CPU

Memory Hub

82915GM

(Northbridge)

PCIe
x1 Bus

AC’97 Link

AC’97
CODEC

Memory Bus

PCIe Bus

PCIe
x16 Bus

Connector

I/O Hub

82801FB

(Southbridge)

LPC Bus

DDR2

SODIMM

SMBus

Clock

Temp

PATA

IDE

SATA

SATA

IDE Devices,

(HDDs,)CD-ROM, etc.

USB Port 0

USB Port 1

USB 2.0

USB Port 2

USB Port 3

CPU Fan

RJ45

Magnetics-

RJ45

Magnetics-

IrDA 1.1

Parallel

Keyboard/
Mouse

Super I/O
W83627HF

COM1

COM2

512kB
ROM
BIOS

LPC I/O
(Secondary)
F81216D

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.

USB Port 4

USB Port 5

COM3

COM4

agm_b

MB821Blkdi

MightyBoard 821 Reference Manual 7

Chapter 2 Product Overview

Table 2-1. Major Component Descriptions and Functions

Chip Type Mfg. Model Description Function

CPU (U10) Intel Pentium M,

Celeron M

Memory Hub (U7) Intel 915GM Memory and Video functions Memory

I/O Hub (U3) Intel 82801FB Provides some of the I/O functions (HDD,

Super I/O (U5) Nuvoton W83627HF Provides most of remaining I/O functions

LPC (I/O) UART
Controller (U13)

Audio '97 CODEC
(U15)

Ethernet
Controllers
(U8, U11)

FinTech F81216D LPC controller for Serial Ports 3 & 4

Realtek ALC202A Audio '97 CODEC for audio In/Out

Intel 82573V Ethernet – These chips provide two

2.0GHz, 1.5GHz CPUs Embedded
CPU

and Video

I/O

Audio, USB, LAN, PCI)

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

(COM 3 & 4)

signals

independent 10/100BaseT and 1000BaseT
network channels respectively

Functions

I/O
Functions

UART
(I/O)
Controller

Audio
In/Out

Ethernet
Functions

U7

U10

U15

U13

U11

U8

U5

U3

Figure 2-3. Component Locations

8 Reference Manual MightyBoard 821