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Related Manuals for ADLINK Technology LittleBoard 735
Summary of Contents for ADLINK Technology LittleBoard 735
- Page 1 ™ LittleBoard Single Board Computer Reference Manual P/N 50-1Z020-1000...
- Page 2 ADLINK 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 ADLINK at the address shown at the bottom of this notice.
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Page 3: Table Of Contents
Legacy USB Support .......................29 USB0 and USB1 ........................29 USB2 and USB3 ........................30 USB4 and USB5 ........................30 Audio Interface..........................31 Video Interfaces ..........................32 CRT Interface ...........................32 LVDS Interface .........................33 TV-Out Interface ........................34 Power Interfaces ..........................34 Power-In Interface ........................34 LittleBoard 735 Reference Manual... - Page 4 Appendix A Technical Support ....................45 Index ..............................47 List of Figures Figure 2-1. Stacking PC/104 Modules with the LittleBoard 735 ..........4 Figure 2-2. Functional Block Diagram ..................7 Figure 2-3. Component Locations (Front view) ................. 9 Figure 2-4.
- Page 5 Table 3-20. User GPIO Pin/Signal Descriptions (J40) ..............36 Table 3-21. SMBus Pin/Signal Descriptions (J45) ..............37 Table 3-22. Optional CPU Fan (J34) ..................38 Table 3-23. External Battery Input Header (J35) ..............39 Table A-1. Technical Support Contact Information..............45 LittleBoard 735 Reference Manual...
- Page 6 Contents Reference Manual LittleBoard 735...
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Page 7: Chapter 1 About This Manual
The following list of references may be helpful for you to complete your design successfully. Most of these references are also available on the Ampro By ADLINK web site in the InfoCenter. The InfoCenter was created for embedded system developers to share ADLINK’s knowledge, insight, and expertise. - Page 8 Chapter 1 About This Manual Chip specifications used on the LittleBoard 735: • Intel Corporation and the Atom N270 processor used for the embedded CPU. Web site: http://download.intel.com/design/processor/datashts/320032.pdf • Intel Corporation and the 82945GSE and 82801GBM chips, used for the Memory Hub/Video controller and I/O Hub, respectively.
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Page 9: Chapter 2 Product Overview
Chapter 2 Product Overview This introduction presents general information about the EBX architecture and the LittleBoard 735 single board computer (SBC). After reading this chapter you should understand: • EBX Architecture • LittleBoard 735 Description • LittleBoard 735 Features •... -
Page 10: Product Description
To provide the ISA bus on the board through the PC/104 connector, an ITE IT8888G-L, PCI-to-ISA Bridge is included. The LittleBoard 735 also supports up to 2GB of DDR2 RAM in a single 200-pin SODIMM slot, and a Graphics Media Accelerator (GMA), which provides CRT, TV Out, and LVDS flat panel video interfaces for most popular LCD panels. -
Page 11: Board Features
Supports 16-bit programmable baud-rate generator and an interrupt generator ♦ • USB Ports Provides three root USB hubs ♦ Provides up to six USB ports ♦ Supports USB boot devices ♦ Supports USB v2.0 EHCI and UHCI v1.1 ♦ LittleBoard 735 Reference Manual... - Page 12 Battery-free boot (Boots even if battery is dead or missing) ♦ Supports both on-board or external battery for Real Time Clock operation ♦ Thermal and Voltage monitoring ♦ Oops! Jumper (BIOS recovery) support ♦ Serial Console ♦ Watchdog timer (WDT) ♦ Reference Manual LittleBoard 735...
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Page 13: Block Diagram
LPC Bus Internal Transformer External Ethernet Transformer Keyboard RJ45 Mouse Super I/O Floppy RJ45 SCH3114I-NU Parallel RS232 RS232 Transceiver Transceiver RS422/485 RS422/485 Transceiver Transceiver COM 1 COM 2 COM 3 COM 4 Figure 2-2. Functional Block Diagram LittleBoard 735 Reference Manual... -
Page 14: Major Components (Ics)
Product Overview Major Components (ICs) Table 2-1 on page 8 lists the major ICs on the LittleBoard 735, including a brief description of each. Figures 2-3 show the locations of the chips. Table 2-1. Major Integrated Circuit Descriptions and Functions Chip Type Mfg. -
Page 15: Figure 2-3. Component Locations (Front View)
Chapter 2 Product Overview U22 U21 Figure 2-3. Component Locations (Front view) LittleBoard 735 Reference Manual... -
Page 16: Headers And Connectors
104-pin standard connector for PC/104 J2A,B, PC/104-Plus 120-pin, 0.079" (2mm), standard connector for PCI bus Video (CRT) 12-pin, 0.079" (2mm), header for output to a CRT type monitor 40-pin standard header for the primary IDE interface Reference Manual LittleBoard 735... - Page 17 USB 0 & 1 10-pin, 0.079" (2mm) header for USB0 and USB1 ports 5-pin, 0.049" (1.25mm) header for external device connection SMBus 5-pin header for power-on button and reset switch Power On Button and Reset Switch LittleBoard 735 Reference Manual...
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Page 18: Figure 2-5. Pin Sequence Identification
(1, 11). The second number in the parenthesis is always directly across from pin 1. See Figure 2-5. 20-pin, two rows, 20-pin, two rows, Odd/Even, (1, 2) Consecutive, (1, 11) Figure 2-5. Pin Sequence Identification Reference Manual LittleBoard 735... -
Page 19: Figure 2-6. Connector Locations (Top View)
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 735 are connected to ground potential (return) of the DC power supply connected to the board through J19. -
Page 20: Jumper Header Definitions
Height (overall) 16.26mm (0.64") connector) on the upper board surface. This measurement does not include the Width 146mm (5.75") various heatsinks on the board. The Length 203mm (8.0") heatsinks could increase this dimension. Thickness 2.36mm (0.093") Reference Manual LittleBoard 735... -
Page 21: Environmental Specifications
The CPU, Memory Hub, I/O Hub, and voltage regulators are the sources of heat on the board. The LittleBoard 735 is designed to operate at the maximum speed of the CPU: 1.6GHz. The Atom N270 CPU requires a heatsink but no fan for -40°C to +85°C operation. -
Page 22: Mechanical Specifications
Chapter 2 Product Overview Mechanical Specifications Figure 2-7 shows the top view of the LittleBoard 735 with the mechanical mounting dimensions. 0.20 0.20 2.65 2.80 5.70 5.80 7.22 7.60 7.80 Figure 2-7. LittleBoard 735 Dimensions NOTE All dimensions are given in inches. -
Page 23: Chapter 3 Hardware
♦ • Miscellaneous Time of Day/RTC ♦ Temperature Monitoring ♦ User GPIO Interface ♦ SMBus Interface ♦ Oops! Jumper (BIOS recovery) ♦ Serial Console ♦ Watchdog timer ♦ Optional CPU fan ♦ External Battery Input ♦ LittleBoard 735 Reference Manual... -
Page 24: Interrupt Channel Assignments
The main integrated circuits (chips) used in the LittleBoard 735 may provide more features or options than are listed for the LittleBoard 735, but some of these chip features/options are not supported on the board and may not function as specified in the chip documentation. -
Page 25: Memory Map
DMA Page Registers 0084-0086 System reserved 0087 DMA Page Register 0088 System reserved 0089-008B DMA Page Registers 008C-008E System reserved 008F DMA Page Register 0090-0091 System reserved 0092 Fast A20 gate and CPU reset 0093-009F System reserved LittleBoard 735 Reference Manual... -
Page 26: Floppy Drive Interface
The floppy signals are provided through the standard 34-pin header (J17). The floppy controller will support a 360k, 720k, 1.2M, 1.44M, or 2.88M drive. The floppy drive header uses 34 pins, 2 rows, odd/even sequence (1, 2) with 0.100" pitch. Reference Manual LittleBoard 735... -
Page 27: Parallel Port Interface
Select – This printer output status indicates the printer is selected and powered on if the signal state is High. Key/NC Key - Not connected Note: The shaded areas denote power or ground. The signals marked with * = Negative true logic. LittleBoard 735 Reference Manual... -
Page 28: Serial Interfaces
Table 3-6 defines the pins and corresponding signals for the Serial B interface header (Serial Ports 3 and Both Serial A and B headers use 20 pins, 2 rows, odd/even sequence (1, 2) with 0.100" pitch. Reference Manual LittleBoard 735... -
Page 29: Table 3-5. Serial A Interface Pin Signals (J11)
TX2+ – If in RS485 or RS422 mode, this pin is Transmit Data 2 +. TXD2 Transmit Data 2 – Serial port 2 transmit data out TX2- TX2- – If in RS485 or RS422 mode, this pin is Transmit Data 2 -. LittleBoard 735 Reference Manual... -
Page 30: Table 3-6. Serial B Interface Pin Signals (J12)
Used as hardware handshake with DSR3 for overall readiness to communicate. 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. Ground Not Connected Reference Manual LittleBoard 735... - Page 31 Ground Not connected Note: The shaded areas denote power or ground. Signals are listed in the table with RS232 first, followed by RS485/RS422. The signals marked with * = Negative true logic. LittleBoard 735 Reference Manual...
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Page 32: Utility Interfaces
To perform the equivalent of a power-on reset, the reset button must be pressed and held for a minimum of three seconds. Speaker The signal lines for a speaker port with 0.1-watt drive are provided through a Utility 1 interface (J15). Reference Manual LittleBoard 735... -
Page 33: Utility 2 Interface
(J13). The master contained in the 82801GBM is used to communicate with the SDRAM DDR2 SODIMM, 82574IT Gigabit Ethernet controller, and the clock generator. Table 3-8 lists the corresponding binary addresses of these devices on the SMBus. LittleBoard 735 Reference Manual... -
Page 34: Mouse Interface
Not connected (USB Port ground) Not connected [USB Port shield (Cable Shield)] Not connected [USB Port shield (Cable Shield)] Note: The shaded area denotes power or ground. The signals marked with * = Negative true logic. Reference Manual LittleBoard 735... -
Page 35: Usb Interfaces
Three shared over-current fuses, located on the board, are used on all six USB ports CAUTION ADLINK does not recommend connecting a USB boot device to the LittleBoard 735 through an external hub. Instead, connect the USB boot device directly to the LittleBoard 735. USB0 and USB1... -
Page 36: Usb2 And Usb3
USB 4 Data Positive USB5+ USB 5 Data Negative USB GND4 USB 4 Ground USB GND5 USB 5 Ground USB GND4 USB 4 Ground USB GND5 USB 5 Ground Note: The shaded areas denote power or ground. Reference Manual LittleBoard 735... -
Page 37: Audio Interface
Hardware Audio Interface The audio solution on the LittleBoard 735 is provided by the Realtek ALC203-LF audio CODEC. The chip is defined by AC97 and is revision 2.2 compliant. The audio interface signals are supplied to the 26-pin 2mm connector (J9). Refer to the following list for the Audio CODEC (ALC203-LF) features. -
Page 38: Video Interfaces
Power – Provided through fuse (F1) to +5 volts +/- 5%. F1 is next to J3 connector on board. DDC (Display Data Channel) Data DDC (Display Data Channel) Clock Note: The shaded areas denote power or ground. Reference Manual LittleBoard 735... -
Page 39: Lvds Interface
Enable Backlight Inverter Not Connected Note: The shaded areas denote power or ground. NOTE Pins 5-14 constitute 2 channel interface of two channels. Pins 15-26 constitute channel interface of two channels, or a single channel interface. LittleBoard 735 Reference Manual... -
Page 40: Tv-Out Interface
Power Interfaces Power-In Interface The LittleBoard 735 uses five separate voltages on the board, but only one of the voltages is provided externally (+5 volts) through the external header (J19), which uses a 7-pin vertical header with 0.156" (3.96mm) pitch. Holes for a right angle mounting header are also available at J19. All the onboard voltages are derived from the externally supplied +5 volts DC +/- 5%. -
Page 41: Atx Power Interface
(J19) are used for the PCI, ISA bus, and LVDS power, which are supplied externally and not generated on the LittleBoard 735. The -5V and -12V used for the PC/104 bus are supplied through the PC/104 bus or from an external power supply through the Utility 1 header (J15). -
Page 42: Miscellaneous
User GPIO Signals The LittleBoard 735 provides GPIO pins for custom use. The signals are routed to the J40 header, and the 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 LittleBoard 735 Support Software QuickDrive The example program can be built by using the make.bat file. -
Page 43: Smbus Interface
PC with communications software. The BIOS Setup Utility controls the serial console settings on the LittleBoard 735. Refer to Chapter 4, BIOS Setup for the settings of the serial console option, the serial terminal, or PC with communications software and the connection procedure. -
Page 44: Hot (Serial) Cable
Support Software CD-ROM illustrating how to control the WDT. The code examples can be easily copied to your development environment to compile and test the examples, or make any desired changes before compiling. Refer to the WDT Readme file on the LittleBoard 735 Support Software QuickDrive. -
Page 45: Battery Input
External Battery Input header, which uses 2 pins, single row, with 0.049" (1.24mm) pitch. Table 3-23. External Battery Input Header (J35) Pin # Signal Description +5.0 volts DC +/- 5% Ground Note: The shaded areas denote power or ground. LittleBoard 735 Reference Manual... - Page 46 Chapter 3 Hardware Reference Manual LittleBoard 735...
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Page 47: Chapter 4 Bios Setup
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 on- board, ROM-BIOS software interface. If ADLINK has added to or modified the standard functions, these functions will be described. -
Page 48: Pci-Isa Bridge Mapping
• DMA Channels The LittleBoard 735 system BIOS maps the above resources based on information provided in the BIOS Setup screens. By default, only some of the I/O ports are mapped to ISA modules and any memory, IRQs or DMA channels to be mapped to ISA modules must be explicitly specified by the user in the BIOS Setup screens. -
Page 49: Logo Screen Utility (Splash Screen)
Logo Screen Utility (Splash Screen) The LittleBoard 735 BIOS supports a graphical logo utility, 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. - Page 50 Chapter 4 BIOS Setup Reference Manual LittleBoard 735...
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Page 51: Appendix A Technical Support
• InfoCenter – This service is also free and available 24 hours a day at the ADLINK web site at http://www.adlinktech.com. However, you must sign up online before you can log in to access this service. - Page 52 Appendix A Technical Support Reference Manual LittleBoard 735...
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Page 53: Index
Interrupt (IRQs) list ..........18 EBX specifications ..........1 PCI-104 specifications ........1 jumper header locations ........14 specifications ...........1 Lithium Battery serial A RTC ............... 36 pin-out list ............23 LittleBoard 735 serial B Atom N270 CPU ..........4 pin-out list ............24 LittleBoard 735 Reference Manual... - Page 54 ............5 web sites memory map ..........19 Ethernet chip specifications ......2 on-board battery ..........6 major chip specifications ........ 2 Oops! jumper (BIOS recovery) ....6 references ............1 parallel port ........... 21 weight ..............14 Reference Manual LittleBoard 735...
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