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MightyBoard 821
Single Board Computer
Reference Manual
P/N 5001784B Revision A
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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 Am
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Contents Chapter 1 About This Manual ....................................................................................................1 Purpose of this Manual ....................................................................................................................1 References ......................................................................................................................................1 Chapter 2 Product Overview...............................................
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Contents Infrared (IrDA) Port .................................................................................................................. 26 Watchdog Timer....................................................................................................................... 27 Power Interfaces .......................................................................................................................... 27 ATX Power Supply Interface .............................................
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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 • BI
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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
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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 Mig
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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 chips
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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 handshak
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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 b
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Chapter 2 Product Overview Block Diagram Figure 2-2 shows the functional components of the MightyBoard 821. Intel Pentium M Clock or Celeron M CPU DDR2 SODIMM CRT VGA Memory Hub Memory Bus 82915GM (Northbridge) LVDS LCD PCIe Bus Temp Connector PCIe x16 Bus SMBus PATA IDE PCIe Ethernet SATA x1 Bus SATA Controller(2) I/O Hub 82573V 82801FB AC’97 Link IDE Devices, (Southbridge) ) (HDDs, CD-ROM, etc. AC’97 USB Port 0 CODEC USB Port 1 USB Port 2 USB 2.0 LPC
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Chapter 2 Product Overview Table 2-1. Major Component Descriptions and Functions Chip Type Mfg. Model Description Function CPU (U10) Intel Pentium M, 2.0GHz, 1.5GHz CPUs Embedded Celeron M CPU Memory Hub (U7) Intel 915GM Memory and Video functions Memory and Video I/O Hub (U3) Intel 82801FB Provides some of the I/O functions (HDD, I/O Audio, USB, LAN, PCI) Functions Super I/O (U5) Nuvoton W83627HF Provides most of remaining I/O functions I/O (FDD, COM1/2, KB, MS, LPT, Fan, Functions IrDA)
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Chapter 2 Product Overview 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 Jack # Signal Description BT1 Battery 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
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DIMM1 DIMM2 Chapter 2 Product Overview J16 J15 JP6 J17 F2 J18 J5 J6 J9 J4 J8 J2 J21 J3 J20 F1 J1 JP1 BT1 J22 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 F
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Chapter 2 Product Overview Jumper Definitions Table 2-4 describes the jumpers shown in Figure 2-4 on page 10. Table 2-4. Jumper Settings Jumper # Installed Removed/Installed JP1 – CMOS Normal/Clear Normal (pins 1-2) Default Clear (pins 2-3) JP2 – CPU Voltage Select 1.5V/533 FSB CPU (pins 1-2) 1.8V/400 FSB CPU (removed) JP3 – Serial 3 (COM3) RS-485 Termination (pins 1-2) No Termination (removed) Termination *Default JP3 – Serial 4 (COM4) RS-485 Termination (pins 3-4) No Termination
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Chapter 2 Product Overview Table 2-6. System Power Requirements (2.0 GHz CPU) Parameter +12.0VDC In-rush Current Max: 5.84A (70.08W) (Typical) Min: 0.20A (2.40W) Idle 0.97A (11.65W) BIT* Current 1.33A (16.00W) (Typical) 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* = Bur
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Chapter 2 Product Overview 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 NOTE Overall height is measured from the Item Dimension upper board surface to the highest 0.385kg. (0.85lbs.) Weight permanent component (Audio 3-in-1 38.50mm (1.51") Height (overall) stack) on the upper board surface. This measurement does not include the 170mm (6.69") W
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Chapter 2 Product Overview 14 Reference Manual MightyBoard 821
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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 Cloc
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Chapter 3 Hardware 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 D Secondary Cascade D COM1 O D COM2 D O COM3 O D COM4 D O Parallel O D RTC D IDE DO Math Coprocessor D PS/2 Mouse D PCI INTA Automatically Assigned PCI INTB Automatically Assigned PCI INTC Automatically Assigned PCI INTD Automatically Assigned PCI INTE Automatically Assigned
