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.
Contents Chapter 1 About This Manual ....................................................................................................1 Purpose of this Manual ....................................................................................................................1 References ......................................................................................................................................1 Chapter 2 Product Overview...........................................................
Contents Infrared (IrDA) Port .................................................................................................................. 26 Watchdog Timer....................................................................................................................... 27 Power Interfaces .......................................................................................................................... 27 ATX Power Supply Interface ........................................................
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.
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 2 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.
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").
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.
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.
Chapter 2 Product Overview • ♦ • • 6 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 exter
Chapter 2 Product Overview Block Diagram Figure 2-2 shows the functional components of the MightyBoard 821. Intel Pentium M or Celeron M CPU Clock DDR2 SODIMM CRT VGA Memory Hub 82915GM (Northbridge) LVDS LCD Memory Bus Temp PCIe Bus Connector PCIe x16 Bus SMBus PATA IDE PCIe x1 Bus Ethernet Controller(2) 82573V AC’97 Link I/O Hub 82801FB (Southbridge) SATA SATA IDE Devices, (HDDs, CD-ROM, etc. ) AC’97 CODEC USB Port 0 USB Port 1 USB Port 2 USB 2.
Chapter 2 Product Overview Table 2-1. Major Component Descriptions and Functions Chip Type CPU (U10) Mfg. Intel Model Pentium M, Celeron M Description 2.0GHz, 1.
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.
Chapter 2 Product Overview J16 J15 JP6 DIMM1 DIMM2 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 10 Component Description F1 (1.
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.
Chapter 2 Product Overview Table 2-6. System Power Requirements (2.0 GHz CPU) Parameter +12.0VDC In-rush Current (Typical) Max: 5.84A (70.08W) Idle 0.97A (11.65W) BIT* Current (Typical) 1.33A (16.00W) Min: 0.20A (2.40W) 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.
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 Item Weight Dimension 0.385kg. (0.85lbs.) Height (overall) 38.50mm (1.51") Width 170mm (6.69") Length 170mm (6.69") Thickness 1.57mm (0.
Chapter 2 14 Product Overview Reference Manual MightyBoard 821
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.
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.
Chapter 3 Hardware 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.
Chapter 3 Hardware 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.
Chapter 3 Hardware Table 3-4. Serial 2 (COM2) Interface Pin/Signal Descriptions (J6) Pin # Pin # DB9 Signal Description 1 1 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. 2 6 DSR2* Data Set Ready 2 – Indicates external serial communications device is powered, initialized, and ready.
Chapter 3 Hardware 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. RX3+ RX3+ – If in RS485 or RS422 mode, this pin is Receive Data 3 -. 7 4 DTR3* Data Terminal Ready 3 – Indicates Serial port 3 is powered, initialized, and ready.
Chapter 3 Hardware 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.
Chapter 3 Hardware 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 Note: The shaded area denotes power or 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.
Chapter 3 Hardware • 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) Pin # Signal Description 1 +12V JP5 = +5 or +12V source 2 VCC_LCD JP4 = +3.
Chapter 3 Hardware 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.
Chapter 3 Hardware 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.
Chapter 3 Hardware 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) Pin # Signal Description 1 ACT#1 Ethernet Activity 1 2 ACT#2 Ethernet Activity 2 3 LINK#1 Ethernet Link 1 4 LINK#2 Ethernet Link 2 5 VCC3 +3 volts – Provides +3 volts to external LED 6 LEDP2 LED positive 2 7 SPEED1 LED speed 1 8 SPEED2 LED speed 2 Note: The shaded area denotes power or ground.
Chapter 3 Table 3-11. Hardware Infrared (IrDA) Interface Pin/Signal Descriptions (J7) (Continued) 4 5 IRRX GND IR Receive Data Ground Note: The shaded area denotes power or 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.
Chapter 3 Hardware Table 3-12. ATX Power Supply Interface Pin/Signal Descriptions (J2) (Continued) 13, 15 GND Ground line 14 PS-On Power Supply On – This signal turns on and off the ATX power supply. 16, 17 GND Ground line 18 NC Not connected (-5.0 volts) Note: The shaded area denotes power or ground. Optional CPU Fan The MightyBoard 821 has an optional CPU fan connector for those environmental situations where customers may require it. Table 3-13.
Chapter 3 Hardware 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.
Chapter 3 Hardware 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.
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.
Chapter 4 8. BIOS Setup 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 key to select the screen menus listed in the Opening BIOS screen. NOTE The serial console port is not hardware protected.
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.
Appendix A 34 Technical Support Reference Manual MightyBoard 821
