LittleBoard™800 Single Board Computer Reference Manual P/N 5001816B 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 ADLINK Technology, Incorporated.
Contents Chapter 1 About This Manual ....................................................................................................1 Purpose of this Manual ....................................................................................................................1 References ......................................................................................................................................1 Chapter 2 Product Overview...........................................................
Contents Serial Console.......................................................................................................................... 35 Serial Console Setup .......................................................................................................... 36 Hot (Serial) Cable .............................................................................................................. 36 Watchdog Timer....................................................................................
Contents Table 3-15. Table 3-16. Table 3-17. Table 3-18. Table A-1. LittleBoard 800 Power On Button and Reset Switch Header Pin/Signal Descriptions (J29)...........34 Power On Header Pin/Signal Descriptions (J30) ...................................................34 Optional CPU Fan (J21) ........................................................................................37 Ethernet External LED Pin/Signal Descriptions (J28) ............................................
Contents vi Reference Manual LittleBoard 800
Chapter 1 About This Manual Purpose of this Manual This manual is for designers of systems based on the LittleBoard™ 800 single board computer (SBC). This manual contains information that permits designers to create an embedded system based on specific design requirements.
Chapter 1 • About This Manual Intel Corporation and the 82855GME and 82801DB chips, used for the Memory Hub/Video controller and I/O Hub, respectively. Web site: http://www.intel.com/products/chipsets/855gme/index.htm = Memory Hub Web site: http://www.intel.com/design/chipsets/datashts/290744.htm = I/O Hub • Intel Corporation and the 82551ER and 82541(GI/PI) chips, used for the Fast Ethernet and Gigabit Ethernet controllers respectively. Web site: http://www.intel.
Chapter 2 Product Overview This introduction presents general information about the EBX architecture and the LittleBoard 800 single board computer (SBC).
Chapter 2 Product Overview 4-40 screws (4) PC/104 Module PC/104 Plus Module PCI Stackthrough Headers ISA Bus Stackthrough Expansion Headers LB800stackthru 0.6 inch spacers (4) Little Board 800 0.6 inch spacers (4) 4-40 nuts (4) Figure 2-1.
Chapter 2 ♦ • • • • • • • • Product Overview 400MHz FSB Memory ♦ Single standard 184-pin DDR DIMM slot ♦ Supports non-ECC or unbuffered ECC memory ♦ Supports +2.5V DDR RAM up to 1GB ♦ Supports up to PC2700 DDR 333 (166MHz) PC/104-Plus Bus Interfaces ♦ PCI Bus up to 33MHz ♦ PCI 2.
Chapter 2 • • • • • 6 Product Overview Keyboard/Mouse Interface ♦ Provides PS/2 keyboard interface ♦ Provides PS/2 mouse interface Audio interface ♦ Provides AC’97 CODEC on board ♦ Supports AC’97 standard Ethernet Interface ♦ Provides two fully independent Ethernet ports ♦ Provides integrated LEDs on each port (Link/Activity and Speed) ♦ Provides Intel 82551ER and 82541(GI/PI) controller chips ♦ Provides extra header for LAN LED signals (gigabit only) ♦ Supports IEEE 802.
Chapter 2 Product Overview Block Diagram Figure 2-2 on page 7 shows the functional components of the board.
Chapter 2 Product Overview Major Components (ICs) Table 2-1 on page 8 lists the major ICs, including a brief description of each, on the LittleBoard 800. Figures 2-3 and 2-4 show the locations of the chips. Table 2-1. Major Integrated Circuit Description and Function 8 Chip Type CPU (U1) Mfg. Intel Model Pentium M or Celeron M Description CPUs offered at 1.4GHz (LV Pentium M), 1.
Chapter 2 Product Overview U7 U7 U1 U1 U2 U2 U3 U3 U13 U13 T1 U31 T1 U31 U19 U18 U19 U18 Figure 2-3.
Chapter 2 Product Overview U51 U9 U11 U17 U14 U16 U20 Figure 2-4. Component Locations (Back view) Headers and Connectors Table 2-2 describes the headers and connectors shown in Figure 2-6 on page 12. All I/O headers use 0.100" (2.54mm) pin spacing unless otherwise indicated. Table 2-2. Header and Connector Descriptions 10 Jack # Name Description SK1 Battery Socket Battery socket for 3 volt Lithium battery DIMM1 Memory 184-pin, .050" (1.
Chapter 2 Product Overview Table 2-2. Header and Connector Descriptions (Continued) J6 Primary IDE 40-pin connector for the primary IDE interface J7 Secondary IDE 40-pin connector for the secondary IDE interface J8 Compact Flash 50-pin, .050" (1.27mm), socket accepts Type I or Type II Compact Flash cards J9 Audio In/Out 26-pin, .
Chapter 2 Product Overview JP1 J26 J21 J3 J9 J14 DIMM1 J2 J1 JP4 J16 J30 J13 J29 J15 J12 J11 J17 J7 Ethernet Grounding Pad J6 Figure 2-6. Header and Connector Locations (Front view) CAUTION NOTE 12 The two Ethernet ports share a common ground (transformer center tap), that is floating until you determine how the common ground is connected. The grounding holes (8) of the LittleBoard 800 are connected to ground potential (return) of the DC power supply connected to the board through J19.
Chapter 2 Product Overview Jumper Headers Table 2-3 describes the jumper headers shown in Figure 2-6 on page 12. Table 2-3. Jumper Settings Jumper # Installed Removed/Installed JP1 – LVDS Voltage Select Enable +3.3V (pins 1-2) Default Enable +5V (pins 2-3) JP2 – Compact Flash Master/Slave Enable Slave (pins 1-2) Enable Master (pins 2-3) Default JP3 – Compact Flash Voltage Selection Enable +5V (pins 1-2) Default Enable +3.
Chapter 2 Product Overview Environmental Specifications Table 2-5 provides the most efficient operating and storage condition ranges required for this board. Table 2-5. Environmental Requirements Humidity Temperature Parameter 800MHz Celeron M Conditions 1.0GHz Celeron M Conditions 1.
Chapter 2 Product Overview Mechanical Specifications Figure 2-7 shows the top view of the LittleBoard 800 with the mechanical mounting dimensions. 0.20 0 0.20 0 2.65 2.80 5.70 5.80 7.22 0.20 0 5.35 5.55 7.60 7.80 Figure 2-7. LittleBoard 800 Dimensions NOTE LittleBoard 800 All dimensions are given in inches.
Chapter 2 16 Product Overview Reference Manual LittleBoard 800
Chapter 3 Hardware Overview This chapter discusses the following features of the connectors: • Interrupt Channel Assignments • Memory Map • I/O Address Map • Floppy Interface • Serial Interfaces • Parallel Interface • Utility Interfaces ♦ Keyboard ♦ Mouse ♦ Battery ♦ Reset Switch ♦ Speaker ♦ USB ♦ SMBus ♦ Infrared (IrDA) • Audio Interface • CRT/LVDS Video Interfaces • Power Interfaces • ♦ Power In ♦ ATX Power Miscellaneous ♦ Time of Day/RTC ♦ Temperature Monitor
Chapter 3 Hardware NOTE ADLINK Technology, Inc. only supports the features/options tested and listed in this manual. The main integrated circuits (chips) used in the LittleBoard 800 may provide more features or options than are listed for the LittleBoard 800, but some of these chip features/options are not supported on the board and may not function as specified in the chip documentation.
Chapter 3 Hardware Memory Map The following table provides the common PC/AT memory allocations. Memory below 000500h is used by the BIOS. Table 3-2.
Chapter 3 Table 3-3.
Chapter 3 Hardware Table 3-4. Parallel Interface Pin/Signal Descriptions (J16) (Continued) 3 PD0 I/O Parallel Port Data 0 – These pins (0 to 7) provide parallel port data. 4 ERR* Out Error* – This is a status output signal from the printer. A Low State indicates an error condition on the printer. 5 PD1 I/O Parallel Port Data 1 – Refer to pin-3 for more information. 6 INIT* Out Initialize* – This signal used to Initialize printer. Output in standard Mode, I/O in ECP/EPP mode.
Chapter 3 • • Hardware Serial A Interface (J11) ♦ Serial Port 1 (COM1) supports RS232/RS485/RS422 and full modem support ♦ Serial Port 2 (COM2) supports RS232/RS485/RS422 Serial B Interface (J12) ♦ Serial Port 3 (COM3) supports RS232/RS485/RS422 and full modem support ♦ Serial Port 4 (COM4) supports RS232/RS485/RS422 NOTE The RS232 and RS485/RS422 modes can be selected for any serial port in BIOS Setup under the Advanced menu.
Chapter 3 Hardware Table 3-5. Serial A Interface Pin/Signal Descriptions (J11) (Continued) 6 8 CTS1* Clear to Send 1 – Indicates external serial communications device is ready to receive data. Used as hardware handshake with RTS1 for low level flow control. RX1+ RX1+ – If in RS485 or RS422 mode, this pin is Receive Data 1 -. 7 4 DTR1* Data Terminal Ready 1 – Indicates this Serial port is powered, initialized, and ready. Used as hardware handshake with DSR1 for overall readiness to communicate.
Chapter 3 Hardware Table 3-6. Serial B Interface Pin/Signal Descriptions (J12) Pin # 1 Pin # DB9 1 Signal Description 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 DTR/DSR handshake. (COM3) 2 6 DSR3* Data Set Ready 3 – Indicates external serial communications device is powered, initialized, and ready.
Chapter 3 Hardware Table 3-6. Serial B Interface Pin/Signal Descriptions (J12) 16 8 CTS4* Clear To Send 4 – Indicator to serial port 4 that 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 +. 17 4 DTR4* Data Terminal Ready 4 – Indicates this Serial port is powered, initialized, and ready.
Chapter 3 Hardware Utility Interfaces The Utility interfaces consist of three connectors that provide the standard interface signals for the following devices: • • • Utility 1 (J15) ♦ Keyboard ♦ External battery connection ♦ Reset Switch ♦ Speaker Utility 2 (J13) ♦ PS/2 Mouse ♦ Infrared (IrDA) signals ♦ SMBus signals ♦ USB signals for USB ports 1 and 2 ♦ Power button signal Utility 3 (J14) ♦ USB signals for USB ports 3 and 4 Utility 1 Interface The Utility 1 (J15) interface uses a
Chapter 3 Hardware Speaker The signal lines for a speaker port with 0.1-watt drive are provided through a Utility 1 interface (J15). Table 3-7. Utility 1 Interface Pin/Signal Descriptions (J15) Pin # Signal I/O Description 1 -12V I -12 Volts – Supplied from external power source. 2 GND I Ground 3 -5V I -5 Volts – Supplied from external power source. 4 GND I Ground 5 LED O Power On LED – This on-board +3.3 volts is provided through 330 ohm resistor to an external Power-On LED.
Chapter 3 Hardware System Management Bus (SMBus) The I/O Hub, 82801DB, (Southbridge) contains both a host and slave SMBus port; but the host cannot access the slave internally. The slave port allows an external master access to the I/O Hub through the connector (J13). The master contained in the 82801DB is used to communicate with the SDRAM DDR DIMM, 82541(GI/PI) Gigabit Ethernet controller, and the clock generator.
Chapter 3 Table 3-9. Hardware Utility 2 Interface Pin/Signal Descriptions (J13) Pin # Signal I/O Description 1 LIDSW - Lid Switch – This signal (Suspend Status on I/O Hub) is asserted by the I/O Hub to indicate the system will be entering a low power state soon. This signal is not shared with other devices on the LittleBoard. This signal is similar to the Lid Switch on laptop computer.
Chapter 3 Hardware Utility 3 Interface The Utility 3 (J14) interface is a 10-pin connector used to provide two of the four USB port signals to an external board with USB connections or directly to the respective USB connector for the USB ports. Table 3-10 gives the pin signals for the Utility 3 interface, which uses 10 pins, 2 rows, odd/even, (1, 2) with 0.100" pitch. • USB ports 3 and 4 USB Signals (USB3 and USB4) The LittleBoard 800 contains two root USB hubs with four functional USB ports.
Chapter 3 • Hardware True Line Level Output with volume control independent of Line Out Table 3-11 describes the pin signals of the audio interface, which uses 26 pins, 2 rows, odd/even, (1, 2) with 2mm pitch. Table 3-11.
Chapter 3 Hardware Flat Panel features: • Supports (+3.3V or +5V, and +12V) output to LCD flat panels through an LVDS interface • Supports panel sizes from VGA (640 x 480) up to UXGA+ (1600 x 1200). • Supports 1-channel (18-bit) or 2-channel (36-bit) LVDS outputs CRT Interface Table 3-12 describes the pin signals of the CRT interface, which uses 10 pins, 2 rows, odd/even, (1, 2) with 0.100" (2.54mm) pitch. Table 3-12.
Chapter 3 Hardware Table 3-13.
Chapter 3 Hardware Table 3-14. Power Supply Input Pin/Signal Descriptions (J19) Pin # Signal Description 1 +5V +5.0 Volts – This +5.0 volts DC +/- 5% is the only voltage required for operation. 2 GND Ground 3 GND Ground 4 +12V +12 Volts – This +12 volts is for the PC/104, PC/104-Plus, and LVDS power only. 5 +3.3V +3.3 Volts – This +3.3 volts is for PC/104-Plus Bus power only (optional). 6 GND Ground 7 +5V +5.0 Volts – This +5.
Chapter 3 Hardware Miscellaneous Real Time Clock (RTC) The LittleBoard 800 contains a Real Time Clock (RTC). The BIOS (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. Temperature Monitoring The ADM1023 performs CPU temperature monitoring. This device has an input connection from the thermal diode in the Intel Celeron M or Pentium M CPU.
Chapter 3 Hardware Serial Console Setup The serial console feature is implemented by connecting a standard null modem cable or modified serial cable (or “Hot Cable”) between one of the serial ports, such as Serial 1 (J11A) and the serial terminal, or a PC with communications software. The BIOS Setup Utility controls the serial console settings on the LittleBoard 800.
Chapter 3 Hardware Optional CPU Fan Table 3-17 lists the pin signals of the optional CPU Fan, which uses 3 pins, single row, with 0.100" pitch. Table 3-17. Optional CPU Fan (J21) Pin # Signal Description 1 Fan_Tach Fan Tachometer – This signal indicates Fan speed 2 VCC +5.0 volts DC +/- 5% 3 GND Ground Note: The shaded area denotes power or ground. LAN LED Table 3-18 lists the pin signals of the Ethernet external LED interface, which uses 5 pins, single row, with 0.100" pitch.
Chapter 3 38 Hardware Reference Manual LittleBoard 800
Chapter 4 BIOS Setup Introduction This section assumes the user is familiar with BIOS Setup and does not attempt to describe the inner workings of BIOS functions. Refer to the appropriate PC reference manuals for information about the onboard, ROM-BIOS software interface. If ADLINK has added to or modified the standard functions, these functions will be described. Entering BIOS Setup (VGA Display) To enter BIOS Setup using a VGA display for the LittleBoard 800: 1.
Chapter 4 5. BIOS Setup Use the key to select the screen menus listed in the Opening BIOS screen. NOTE The serial console port is not hardware protected, and is not listed in the COM table within BIOS Setup. Diagnostic software that probes hardware addresses may cause a loss or failure of the serial console functions. PCI-ISA Bridge Mapping The LittleBoard 800 supports ISA bus based modules with an on-board PCI-ISA bridge.
Appendix A Technical Support ADLINK Technology, 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 by ADLINK 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 By ADLINK web site at http://ampro.custhelp.
Appendix A 42 Technical Support Reference Manual LittleBoard 800
Index A ATX Power in pin-out list ..................................................... 34 audio interface pin-out list ..................................................... 31 B BIOS Setup accessing BIOS setup (VGA) ....................... 39 accessing serial console ................................ 39 splash screen conversion ............................... 40 watchdog timer (WDT) ................................. 36 C connector pin arrangement description ...............................................
Index S serial A pin-out list ..................................................... 22 serial B pin-out list ..................................................... 24 Serial Communications Software ....................... 35 Serial console accessing BIOS ............................................. 39 serial console console redirection ........................................ 35 Hot cable ....................................................... 36 modified serial cable .....................................
