LittleBoard™ 735 Single Board Computer Reference Manual P/N 50-1Z020-1000
Notice Page DISCLAIMER ADLINK Technology, Incorporated makes no representations or warranties with respect to the contents of this manual or of the associated ADLINK products, and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. ADLINK 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.
Contents Chapter 1 About This Manual ....................................................................................................1 Purpose of this Manual ....................................................................................................................1 References ......................................................................................................................................1 Chapter 2 Product Overview...........................................................
Contents ATX Power Interface ............................................................................................................... 35 Power-On Button Interface....................................................................................................... 35 Miscellaneous................................................................................................................................ 36 Real Time Clock (RTC) ....................................................................
Contents Table 3-7. Table 3-8. Table 3-9. Table 3-10. Table 3-11. Table 3-12. Table 3-13. Table 3-14. Table 3-15. Table 3-16. Table 3-17. Table 3-18. Table 3-19. Table 3-20. Table 3-21. Table 3-22. Table 3-23. Table A-1. LittleBoard 735 Utility 1 Interface Pin Signals (J15) ........................................................................27 SMBus Reserved Addresses .................................................................................28 Utility 2 Interface Pin Signals (J13) ............
Contents vi Reference Manual LittleBoard 735
Chapter 1 About This Manual Purpose of this Manual This manual is for designers of systems based on the LittleBoard™ 735 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 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. Web site: http://download.intel.com/design/processor/datashts/309219.pdf = Memory Hub Web site: http://www.intel.com/Assets/PDF/datasheet/307013.
Chapter 2 Product Overview This introduction presents general information about the EBX architecture and the LittleBoard 735 single board computer (SBC).
Chapter 2 Product Overview 4-40 screws (4) PC/104 Module 0.6 inch spacers (4) PC/104 Plus Module ISA Bus Stackthroug Expansion Headers PCI Stackthrough Headers Little Board735 0.6 inch spacers (4) 4-40 nuts (4) Figure 2-1.
Chapter 2 Product Overview Board Features • • • • • • • • CPU features ♦ Intel 1.6GHz LV, Atom N270 Processor ♦ 512KB L2 cache ♦ 533MHz FSB Memory ♦ Single standard 200-pin DDR2 SODIMM socket ♦ Supports non-ECC, unbuffered memory ♦ Supports +2.5V DDR2, 533MHz RAM up to 2GB PC/104-Plus Bus Interfaces ♦ PCI Bus up to 33MHz ♦ PCI 2.
Chapter 2 ♦ • • • • • 6 Product Overview Supports over-current detection status 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 82562GT and 82574IT controller chips ♦ Supports IEEE 802.
Chapter 2 Product Overview Block Diagram Figure 2-2 shows the functional components of the board.
Chapter 2 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 and 2-4 show the locations of the chips. Table 2-1. Major Integrated Circuit Descriptions and Functions 8 Chip Type CPU (U1) Mfg. Intel Model Atom N270 Description CPUs offered at 1.
Chapter 2 Product Overview U14 U4 U13 U22 U21 U10 U25 LB735_Comp_Top_b U12 Figure 2-3.
Chapter 2 Product Overview J37 U15 LB735_Back_a J38 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 13. All I/O headers use 0.100" (2.54mm) pitch unless otherwise indicated. Table 2-2.
Chapter 2 Product Overview Table 2-2. Header and Connector Descriptions (Continued) J8 Compact Flash 50-pin, 0.050" (1.27mm), socket accepts Type I or Type II Compact Flash cards J9 Audio In/Out 26-pin, 0.
Chapter 2 Product Overview NOTE The pinout tables in Chapter 3 of this manual identify pin sequence using the following methods: A 20-pin header with two rows of pins, using odd/even numbering, where pin 2 is directly across from pin 1, is noted as 20-pin, 2 rows, odd/even (1, 2). Alternately, a 20-pin connector using consecutive numbering, where pin 11 is directly across from pin 1, is noted in this way: 20-pin, 2 rows, consecutive (1, 11).
Product Overview J32 J40 JP8 J26 J3 J33 JP1 LB735_Conn_b Chapter 2 J9 J30 J2 J1 J45 BAT1 J10 J35 J12 J16 J46 J13 J15 J44 J11 J23 J14 J39 J6 J19 JP7 JP6 Ethernet Grounding Pad Board Grounding Pad Figure 2-6. Connector Locations (Top view) CAUTION NOTE LittleBoard 735 The two Ethernet ports share a common ground (transformer center tap), that is floating until you determine how the common ground is connected.
Chapter 2 Product Overview Jumper Header Definitions Table 2-3 describes the jumper headers shown in Figure 2-6 on page 13. Table 2-3.
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 1.
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 0.20 0 2.65 LB735_Dimen_Top_b 2.80 5.70 5.80 7.22 0.20 0 5.35 5.55 7.60 7.80 Figure 2-7. LittleBoard 735 Dimensions NOTE 16 All dimensions are given in inches.
Chapter 3 Hardware Overview This chapter discusses the following features of the connectors: • Interrupt Channel Assignments • Memory Map • I/O Address Map • Floppy Interface • Parallel Interface • Serial Interfaces • Utility Interfaces ♦ Keyboard ♦ Mouse ♦ Battery ♦ Reset Switch ♦ Speaker ♦ SMBus • USB Interfaces • Audio Interface • Video Interfaces • • ♦ CRT ♦ LVDS ♦ TV Out Power Interfaces ♦ Power In ♦ ATX Power ♦ Power-On Button Miscellaneous ♦ Time of Da
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 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.
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 Parallel Port Interface Parallel port supports standard parallel, Bi-directional, ECP and EPP protocols. The SCH3114I-NU chip (U15) provides separate parallel port interface signals. The parallel header uses 26 pins, 2 rows, odd/even sequence (1, 2), with 0.100" pitch. Table 3-4. Parallel Interface Pin Signals (J16) Pin # Signal In/Out Description 1 Strobe* Out Strobe* – This is an output signal used to strobe data into the printer. I/O pin in ECP/EPP mode.
Chapter 3 Hardware Serial Interfaces Two MAX213ECAI+ chips and two LTC1334CG#PBF chips provide the circuitry for the four serial ports: The MAX213ECAI+ chips for RS232 mode and the LTC1334CG#PBF chips for RS485/RS422 modes.
Chapter 3 Hardware Table 3-5. Serial A Interface Pin Signals (J11) Pin # 1 Pin # DB9 1 Signal Description DCD1* Data Carrier Detect 1 – 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 DTR1 as part of the DTR/DSR handshake. (COM1) 2 6 DSR1* Data Set Ready 1 – Indicates external serial communications device is powered, initialized, and ready.
Chapter 3 Hardware Table 3-5. Serial A Interface Pin Signals (J11) (Continued) 16 8 CTS2* Clear To Send 2 – Indicates external serial communications device is ready to receive data. Used as hardware handshake with RTS2 for low level flow control. RX2+ RX2+ – If in RS485 or RS422 mode, this pin is Receive Data 2 -. 17 4 DTR2* Data Terminal Ready 2 – Indicates Serial port 1 is powered, initialized, and ready. Used as hardware handshake with DSR2 for overall readiness to communicate.
Chapter 3 Hardware Table 3-6. Serial B Interface Pin Signals (J12) (Continued) 11 1 (COM4) DCD4* Data Carrier Detect 4 – 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 DTR4 as part of the DTR/DSR handshake. 12 6 DSR4* Data Set Ready 4 – Indicates external serial communications device is powered, initialized, and ready.
Chapter 3 Hardware Utility Interfaces The Utility interfaces consist of two headers 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 ♦ SMBus ♦ Power button Utility 1 Interface The Utility 1 (J15) interface uses a 16-pin connector and provides the various interface signals to an external I/O board with external connections for the respective connectors su
Chapter 3 Hardware Table 3-7. Utility 1 Interface Pin Signals (J15) Pin # Signal 1 NC I/O - Not connected (-12V Power) Description 2 GND I Ground 3 NC - Not connected (-5V Power) 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. 6 NC - Not connected (Power Good) 7 SPKR+ O + Speaker Output – This signal drives external PC "Beep" speaker.
Chapter 3 Hardware Table 3-8. SMBus Reserved Addresses Component Address Binary SDRAM SODIMM 1010,000xb Clock Generator (9LPRS501) 1101,001xb I/O Hub (82801GBM) 0000,000xb (default) Programmable Master Mouse Interface The signal lines for a PS/2 mouse are provided through the Utility 2 interface (J13). Table 3-9.
Chapter 3 Hardware USB Interfaces The I/O Hub (82801GBM) provides the USB solution for both legacy UHCI controller 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. The J44 header provides two of the six USB ports: USB0 and USB1. The J14 header provides USB2 and USB3, and the J39 header provides USB4 and USB5. USB 2.
Chapter 3 Hardware Table 3-10. USB 0 & 1 Interface Pin Signals (J44) (Continued) 9 USB GND0 USB 0 Ground 10 USB GND1 USB 1 Ground Note: The shaded areas denote power or ground. USB2 and USB3 Table 3-11 lists the USB2 and USB3 pin signals which use 10 pins, 2 rows, odd/even sequence (1, 2) with 0.079" (2mm) pitch. Table 3-11.
Chapter 3 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. • Analog Mixer Dynamic Range 97dB (typ) • D/A Dynamic Range 89dB (typ) and A/D Dynamic Range 90dB (typ) • AC’97 Rev 2.
Chapter 3 Hardware Video Interfaces The 82945GSE chip provides the graphics control and video signals to the traditional glass CRT monitors and LCD flat panel displays.
Chapter 3 Hardware LVDS Interface Table 3-15 describes the pin signals of the LVDS interface, which uses 30 pins, 2 rows, odd/even sequence (1, 2) with 0.079" (2mm) pitch. Table 3-15. LVDS Interface Pin Signals (J26) Pin # Signal Description 1 +12V +12 volt input Line 2 +VCC (+3.
Chapter 3 Hardware TV-Out Interface Table 3-16 describes the pin signals of the TV-Out interface, which uses 6 pins, 2 rows, odd/even sequence (1, 2) with 0.100" (2.54mm) pitch. Table 3-16.
Chapter 3 Hardware Note: The shaded areas denote power or ground. The +12V and +3.3V on the Power Supply Input header (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). ATX Power Interface Table 3-18 lists the pin signals for the J30 Power-On header, which uses 3 pins, single row with 0.
Chapter 3 Hardware Miscellaneous Real Time Clock (RTC) The LittleBoard 735 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 Intel Atom processor supports the THERMTRIP# signal for catastrophic thermal protection. The THERMTRIP# is an open drain signal from the processor which is used to shut down the processor core voltage.
Chapter 3 Hardware SMBus Interface Table 3-21 lists the pin signals for the J45 SMBus Reset header, which uses 5 pins, single row, and 0.49" pitch. Table 3-21. SMBus Pin/Signal Descriptions (J45) Pin # Signal Description 1 SCL SMBus Clock Reset 2 GND Ground 3 SDA SMBus Data Reset 4 VCC +3.3 Volts DC +/ 5% 5 ALERT SMBus Alert Note: The shaded areas denote power or ground.
Chapter 3 Hardware Hot (Serial) Cable 5 4 3 2 1 Standard DB9 Cable Connector (Female) Rear View LB735Hotcable To convert a standard serial cable to a Hot Cable, specific pins must be shorted together at the Serial port connector or at the DB9 cable connector. For example, short the RTS (7) and RI (9) at the rear of the respective DB9 cable connector as shown in Figure 3-3. 9 8 7 6 Figure 3-3.
Chapter 3 Hardware Battery Input Table 3-23 lists the pin signals of the 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 1 VCC +5.0 volts DC +/- 5% 2 GND Ground Note: The shaded areas denote power or ground.
Chapter 3 40 Hardware Reference Manual LittleBoard 735
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 735: 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 735 supports ISA bus based modules with an on-board PCI-ISA bridge.
Chapter 4 BIOS Setup 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. The custom image can be displayed as the first image displayed on screen during the boot process and remain there, depending on the options selected in BIOS Setup, while the OS boots.
Chapter 4 44 BIOS Setup Reference Manual LittleBoard 735
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 web page are given the highest priority, and usually will be addressed within one working day. • 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 ADLINK web site at http://adlinktech.custhelp.com.
Appendix A 46 Technical Support Reference Manual LittleBoard 735
Index A AT Power in pin-out list ..................................................... 34 audio interface pin-out list ..................................................... 31 B BIOS Setup accessing BIOS setup (VGA) ....................... 41 accessing serial console ................................ 41 splash screen conversion ............................... 43 watchdog timer (WDT) ................................. 38 C connector/header pin arrangement description .........................................
Index Serial console accessing BIOS ............................................. 41 serial console console redirection ........................................ 37 Hot cable ....................................................... 38 modified serial cable ..................................... 38 serial port settings ......................................... 41 serial terminal ................................................ 37 serial terminal emulation ...............................
