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LittleBoard 735
Reference Manual
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ADLINK LittleBoard 735 Reference Manual

LittleBoard™ 735
Single Board Computer
Reference Manual
P/N 50-1Z020-1020

Notice Page

DISCLAIMER
TRADEMARKS
CoreModule and the Ampro logo are registered trademarks, and ADLINK, Little Board, LittleBoard, MightyBoard, MightySystem, MilSystem, MiniModule, ReadyBoard, ReadyBox, ReadyPanel, ReadySystem, and RuffSystem are trademarks of ADLINK Technology, Inc. All other marks are the property of their respective companies.
REVISION HISTORY
Revision Reason for Change Date
00 Initial Release April/09
2.0 Revised PCI-to-ISA section in ch 4; revised +5V to be default JP5 setting in Tab le 2- 3; revised environmental specifications in
Tab le 2- 5; added Ta ble 2 -7 for cooling solutions; revised
Appendix A
1010 Replaced EOL Ethernet chip; revised locations of components
and connectors; added active heatsink
1020 Added J47 and J48 LAN LED headers (replaced fast
RJ-45 with Gigabit RJ-45 in rev 1010); re-defined pins 1 and 3
in Tab le 3-1 3; changed Serial Console to Remote Access in
Ch 3 & 4; revised function definitions in Tab le 2-1; changed
description of J3 in Tab le 2- 2; added fan voltage caution to
Ch 3; revised BIOS Setup procedures in Ch 4; added BIOS
Setup Utility section to Ch 4; updated index
April/10
Nov/10
May/12
ADLINK Technology, Incorporated 5215 Hellyer Avenue, #110 San Jose, CA 95138-1007 Tel. 408 360-0200 Fax 408 360-0222 www.adlinktech.com © Copyright 2009, 2010, 2011, 2012 ADLINK Technology, Incorporated
Audience
This manual provides reference only for computer design engineers, including but not limited to hardware and software designers and applications engineers. ADLINK Technology, Inc. assumes you are qualified to design and implement prototype computer equipment.
ii Reference Manual LittleBoard 735
Contents
Chapter 1 About This Manual ....................................................................................................1
Purpose of this Manual ....................................................................................................................1
References ......................................................................................................................................1
Chapter 2 Product Overview......................................................................................................3
EBX Architecture..............................................................................................................................3
Product Description..........................................................................................................................4
Board Features ..........................................................................................................................5
Block Diagram ............................................................................................................................7
Major Components (ICs)..................................................................................................................8
Headers and Connectors ...............................................................................................................12
Jumper Header Definitions ............................................................................................................15
Specifications.................................................................................................................................17
Physical Specifications .............................................................................................................17
Mechanical Specifications ........................................................................................................17
Environmental Specifications ..................................................................................................18
Power Specifications .............................................................................................................18
Thermal/Cooling Requirements ...............................................................................................19
Chapter 3 Hardware .................................................................................................................21
Overview .......................................................................................................................................21
Interrupt Channel Assignments .....................................................................................................22
Memory Map .................................................................................................................................23
I/O Address Map ...........................................................................................................................23
Floppy Drive Interface ...................................................................................................................24
Parallel Port Interface ...................................................................................................................25
Serial Interfaces ...........................................................................................................................26
Utility Interfaces ............................................................................................................................29
Utility 1 Interface ....................................................................................................................30
Keyboard ..........................................................................................................................30
External Battery ..................................................................................................................30
Power-On LED ...................................................................................................................30
Reset Switch .......................................................................................................................30
Speaker ............................................................................................................................30
Utility 2 Interface ......................................................................................................................31
System Management Bus (SMBus) .................................................................................31
Mouse .................................................................................................................................31
Power Button .......................................................................................................................31
USB Interfaces ..............................................................................................................................32
USB 2.0 Support.......................................................................................................................32
Legacy USB Support ...............................................................................................................32
USB0 and USB1 ......................................................................................................................33
USB2 and USB3 .......................................................................................................................33
USB4 and USB5 ......................................................................................................................34
Audio Interface...............................................................................................................................34
Video Interfaces .........................................................................................................................35
VGA Interface ........................................................................................................................36
LVDS Interface .....................................................................................................................36
TV-Out Interface ....................................................................................................................37
LittleBoard 735 Reference Manual iii
Contents
Power Interfaces .......................................................................................................................... 38
Power-In Interface ................................................................................................................... 38
ATX Power-On Interface .....................................................................................................38
Power Button and Reset Switch Interface ............................................................................. 38
Miscellaneous ............................................................................................................................... 39
Real Time Clock (RTC) ........................................................................................................... 39
Temperature Monitoring .......................................................................................................... 39
User GPIO Signals .................................................................................................................. 39
SMBus Interface ...................................................................................................................... 40
Oops! Jumper (BIOS Recovery) ........................................................................................... 40
Remote Access ........................................................................................................................ 40
Remote Access Setup ........................................................................................................ 41
Hot (Serial) Cable .............................................................................................................. 41
Watchdog Timer....................................................................................................................... 41
Optional CPU Fan .............................................................................................................. 42
GLAN1 LED ........................................................................................................................ 42
GLAN2 LED ............................................................................................................................. 42
Battery Input ............................................................................................................................ 43
Chapter 4 BIOS Setup .............................................................................................................. 45
Introduction.................................................................................................................................... 45
Entering BIOS Setup (Local Video Display) ............................................................................. 45
Entering BIOS Setup (Remote Access) .................................................................................. 45
PCI-to-ISA Bridge Mapping .......................................................................................................... 46
Logo Screen Utility (Splash Screen) .............................................................................................46
Logo Screen Image Requirements ......................................................................................... 46
BIOS Setup Menus........................................................................................................................ 47
BIOS Main Setup Screen ........................................................................................................ 47
BIOS Advanced Setup Screen ................................................................................................ 48
BIOS PCIPnP Setup Screen ................................................................................................... 54
BIOS Boot Setup Screen ........................................................................................................ 55
BIOS Security Setup Screen ................................................................................................... 57
BIOS Chipset Setup Screen .................................................................................................... 58
BIOS Exit Setup Screen .......................................................................................................... 59
Appendix A Technical Support ..................................................................................................61
Index .................................................................................................................................................. 63
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 (Top Side).......................................................................... 10
Figure 2-4. Component Locations (Bottom Side) .................................................................... 11
Figure 2-5. Pin Sequence Identification................................................................................... 13
Figure 2-6. Connector Locations (Top Side)............................................................................ 14
Figure 2-7. Jumper Header Locations (Top Side) ................................................................... 16
Figure 2-8. LittleBoard 735 Dimensions .................................................................................. 17
Figure 3-1. RS485 Serial Port Implementation ........................................................................ 26
Figure 3-2. Oops! Jumper Connection..................................................................................... 40
Figure 3-3. Hot Cable Jumper ................................................................................................. 41
Figure 4-1. BIOS Main Setup Screen ...................................................................................... 47
iv Reference Manual LittleBoard 735
Figure 4-2. BIOS Advanced Setup Screen...............................................................................48
Figure 4-3. BIOS PCIPnP Setup Screen..................................................................................54
Figure 4-4. BIOS Boot Setup Screen .......................................................................................55
Figure 4-5. BIOS Security Setup Screen..................................................................................57
Figure 4-6. BIOS Chipset Setup Screen ..................................................................................58
Figure 4-7. BIOS Exit Setup Screen.........................................................................................59
List of Tables
Table 2-1. Major Integrated Circuit Descriptions and Functions ...............................................8
Table 2-2. Header and Connector Descriptions......................................................................12
Table 2-3. Jumper Settings .....................................................................................................15
Table 2-4. Weight and Footprint Dimensions..........................................................................17
Table 2-5. Environmental Requirements.................................................................................18
Table 2-6. Power Supply Requirements .................................................................................18
Table 2-7. ADLINK Optional Cooling Solutions.......................................................................19
Table 3-1. Interrupt Channel Assignments..............................................................................22
Table 3-2. Memory Map ..........................................................................................................23
Table 3-3. I/O Address Map ....................................................................................................23
Table 3-4. Parallel Interface Pin Signals (J16)........................................................................25
Table 3-5. Serial A Interface Pin Signals (J11) .......................................................................27
Table 3-6. Serial B Interface Pin Signals (J12) .......................................................................28
Table 3-7. Utility 1 Interface Pin Signals (J15) ........................................................................30
Table 3-8. SMBus Reserved Addresses .................................................................................31
Table 3-9. Utility 2 Interface Pin Signals (J13) ........................................................................31
Table 3-10. USB 0 & 1 Interface Pin Signals (J44) ...................................................................33
Table 3-11. USB 2 & 3 Interface Pin Signals (J14) ...................................................................33
Table 3-12. USB 4 & 5 Interface Pin Signals (J39) ...................................................................34
Table 3-13. Audio Interface Pin Signals (J9).............................................................................34
Table 3-14. VGA Interface Pin Signals (J3) ..............................................................................36
Table 3-15. LVDS Interface Pin Signals (J26) ..........................................................................36
Table 3-16. TV-Out Pin Signals (J36) .......................................................................................37
Table 3-17. Power-In Interface Pin Signals (J19) .....................................................................38
Table 3-18. ATX Power-On Interface Pin Signals (J30)............................................................38
Table 3-19. Power Button Interface Pin Signals (J46) ..............................................................38
Table 3-20. User GPIO Pin Signals (J40) .................................................................................39
Table 3-21. SMBus Pin Signals (J45) .......................................................................................40
Table 3-22. Optional CPU Fan (J34) ........................................................................................42
Table 3-23. Ethernet External LED Pin Signal Descriptions (J47) ............................................42
Table 3-24. Ethernet External LED Pin Signal Descriptions (J48) ............................................42
Table 3-25. External Battery Input Header (J35) .....................................................................43
Table 4-1. BIOS Setup Menus ................................................................................................47
Table A-1. Technical Support Contact Information..................................................................61
Contents
LittleBoard 735 Reference Manual v
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.
Information provided in this reference manual includes:
• LittleBoard 735 specifications
• Environmental requirements
• Major integrated circuits (chips) and features implemented
• LittleBoard 735 connector/pin numbers and definitions
• BIOS Setup information
Information not provided in this reference manual includes:
• Detailed chip specifications
• Internal component operation
• Standard connector pin-out tables
• Internal registers or signal operations
• Bus or signal timing for industry standard busses and signals
References
The following list of references may be helpful for you to complete your design successfully.
Specifications:
• EBX Spec Revision 2.0, March 1, 2005
For the latest version of the EBX specifications, contact the PC/104 Consortium, at:
Web site: h
• PCI Express Mini Card Spec Revision 1.0
For latest revision of the PCI Express Mini Card specifications, contact the PCI Special Interest Group Office, at:
Web site: http://www.pcisig.com/specifications/pciexpress/mini
• PC/104 Spec Revision 2.5, November 2003
• PC/104-Plus Spec Revision 2, November 2003
For latest revision of the PC/104 specifications, contact the PC/104 Consortium, at:
Web site: http://www.pc104.org
• PCI 2.2 Compliant Specifications
ttp://www.pc104.org
For latest revision of the PCI specifications, contact the PCI Special Interest Group Office at:
Web site: http://www.pcisig.com
LittleBoard 735 Reference Manual 1
Chapter 1 About This Manual
• AMI BIOS Core 8 User’s Guide
Web site: http://www.ami.com/support/doc/MAN-EZP-80.pdf
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
Web site: http://www.intel.com/Assets/PDF/datasheet/307013.pdf
= I/O Hub
= Memory Hub
• Intel Corporation and the 82574IT chips (2), used for the Gigabit Ethernet controllers, respectively.
Web site: http://download.intel.com/design/network/datashts/82574.pdf
= Gigabit Ethernet
• Standard Microsystems Corp and the SCH3114I-NU chip, used for the Super I/O controller.
Web site: http://www.smsc.com/main/catalog/sch311x.html
• Realtek and the ALC203 chip, used for the Audio CODEC.
Web site: http://www.realtek.com.tw/search/default.aspx?keyword=ALC203
• ITE Tech. Inc. and the IT8888F chip, used for the PCI-to-ISA bridge conversion.
Web site: http://www.ite.com.tw/EN/products_more.aspx?CategoryID=3&ID=5,76
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, htm, pdf, etc.
2 Reference Manual LittleBoard 735
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
• Block Diagram
• Major Components
• Headers and Connectors
• Jumper Headers
• Specifications (physical, environmental, power, cooling)
EBX Architecture
The “Embedded Board, eXpandable” (EBX) standard is the result of a collaboration between industry leaders Motorola and Ampro to unify the embedded computing industry through a full featured embedded single-board computer (SBC) standard. The EBX standard principally defines physical size, mounting hole pattern, and power connector locations. It does not specify processor type or electrical characteristics. There are recommended connector placements for serial/parallel, Ethernet, graphics, and memory expansion.
Derived from the Ampro LittleBoard form-factor originated in 1984, EBX combines a standard footprint with open interfaces. The EBX form-factor is small enough for deeply embedded applications, yet large enough to contain the functions of a fully embedded SBC (Single Board Computer) including CPU, memory, mass storage interfaces, display controller, serial and parallel ports, today’s advanced operating systems, and other system functions. This embedded SBC standard ensures that embedded system OEMs can standardize their designs and that embedded computing solutions can be designed into space constrained environments with off-the-shelf components.
The EBX standard boasts highly flexible and adaptable system expansion, allowing easy and modular additions of functions such as USB 2.0 ports and Firewire or wireless networking not usually contained in standard product offerings. The EBX system expansion is based on popular existing industry standards, PC/ 104™ and PC/104-Plus™. PC/104 places the ISA bus on compact 3.6" x 3.8" modules with self-stacking capability. PC/104-Plus adds the power of a PCI bus to PC/104 while retaining the basic form-factor. Using PC/104 expansion cards, the PC/104 standard offers access to PC cards from the mobile and handheld computing markets.
The EBX standard integrates all these off-the-shelf standards into a highly embeddable SBC form-factor. EBX supports the legacy of PC/104, hosting the wide variety of embedded system oriented expansion modules from hundreds of companies worldwide. PC/104 brings the advantages of the latest portable and mobile system expansion technologies to embedded applications. See Figure 2-1 on page 4.
The EBX standard also brings stability to the embedded board market and offers OEMs assurance that a wide range of products will be available from multiple sources – now and in the future. The EBX standard is open to continuing technology advancements since it is processor independent. It creates opportunity for economies of scale in chassis, power supply, and peripheral devices.
The EBX specification is freely available to all interested. For further technical information on the EBX standard, go to the PC/104 Consortium web site at www.pc104.org.
LittleBoard 735 Reference Manual 3
Chapter 2 Product Overview
)
4-40 screws (4)
PC/104 Module
0.6 inch spacers (4)
PCI Stack
0.6 inch spacers (4)
through
Headers
4-40 nuts(4
Figure 2-1. Stacking PC/104 Modules with the LittleBoard 735
PC/104 Plus Module
ISA Bus Stackthrough Expansion Headers
Little Board735
Product Description
The LittleBoard 735 is an exceptionally high integration, high performance, rugged, and high quality single­board system, which contains all the component subsystems of a PC motherboard plus the equivalent of up to 3 expansion boards. Based on the Intel Atom N270 low power, high-integration processor, the LittleBoard 735 gives designers a complete, high performance, embedded processor based on the EBX form factor and conforms to the EBX V2.0 specifications.
Each LittleBoard 735 incorporates an Intel 945GSE chipset for the Graphics and Memory Hub (Northbridge) and the I/O Hub (Southbridge) controllers. This set includes the 82945GSE, Graphics and Memory Controller Hub, (also GMCH), which controls the graphics and memory interface. The other chip in this set is the 82801GBM, I/O Controller Hub 7 Mobile (ICH7-M), which controls some of the I/O functions on the board. One additional chip provides the remainder of the I/O functions: the Standard Microsystems, SCH3114I-NU, Super I/O controller. Together the Intel and SMSC chips provide four serial ports, an EPP/ECP parallel port, six USB 2.0 ports, PS/2 keyboard and mouse interfaces, floppy, one Ultra/ DMA 33/66/100 IDE controller supporting Compact Flash, two independent 10/100/1000BaseT Ethernet interfaces, an audio AC’97 CODEC, PCIe Mini Card, GPIO, SMBus, and two SATA ports on the board. 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 VGA, TV Out, and LVDS flat panel video interfaces for most LCD panels and CRT monitors.
The LittleBoard 735 can be expanded through the PC/104 and PC/104-Plus expansion for additional system functions, as these buses offer compact, self-stacking, modular expandability. The PC/104 and PC/104-Plus buses are the embedded system versions of the signal set provided on a desktop PC’s ISA and PCI buses at 8MHz and 33MHz clock speeds, respectively.
LB735stackthru
Among the many embedded-PC enhancements on the LittleBoard 735 that ensure embedded system operation and application versatility are a Watchdog Timer, serial console support, battery-free boot, on­board, high-density Compact Flash socket, and BIOS extensions for OEM boot customization.
The LittleBoard 735 is particularly well suited to either embedded or portable applications and meets the size, power consumption, temperature range, quality, and reliability demands of embedded system applications. It can be stacked with ADLINK MiniModules™ or other PC/104-compliant expansion boards, or it can be used as a powerful computing engine.
4 Reference Manual LittleBoard 735
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 2.2 compliant signals
♦
PC/104 (ISA) Bus up to 8MHz
• IDE Interfaces
♦
Provides one enhanced IDE controller (Compact Flash)
♦
Supports Ultra DMA 33/66/100 modes
♦
Supports ATAPI and DVD peripherals
♦
Supports IDE native and ATA compatibility modes
• Floppy Disk Interface
♦
Supports one standard floppy disk drive interface
♦
Supports all standard PC/AT formats: 360KB, 1.2MB, 720KB, 1.44MB, 2.88MB
• Parallel Port
♦
Provides a standard printer interface
♦
Supports IEEE standard 1284 protocols of EPP and ECP outputs
♦
Supports Bi-directional data lines
♦
Supports 16 byte FIFO for ECP mode
• Serial Ports
♦
Four buffered serial ports with full handshaking
♦
Provides 16550-equivalent controllers, each with a built-in 16-byte FIFO buffer
♦
Supports full modem capability on three of the four ports
♦
Supports RS232, RS485, or RS422 operation on each port
♦
Supports programmable word length, stop bits, and parity
♦
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
♦
Supports over-current detection status
LittleBoard 735 Reference Manual 5
Chapter 2 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 Gigabit Ethernet ports
♦
Provides integrated LEDs on each port (Link/Activity and Speed)
♦
Provides two Intel 82574IT controller chips
♦
Supports IEEE 802.3 10/100BaseT and 10/100/1000BaseT compatible physical layers
♦
Provides headers for two external Gigabit Ethernet LEDs
♦
Supports Auto-negotiation for speed, duplex mode, and flow control
♦
Supports full duplex or half-duplex mode
• Full-duplex mode supports transmit and receive frames simultaneously
• Supports IEEE 802.3x Flow control in full duplex mode
• Half-duplex mode supports enhanced proprietary collision reduction mode
• Video Interfaces (VGA/LVDS/TV Out)
♦
Support VGA (2048 x 1536) with up to 64MB UMA (Unified Memory Architecture)
♦
AGP 4X equivalent graphics performance
♦
Dual channel 9-, 12-, or 18-bit LVDS
♦
LVDS outputs (1 or 2 channel, four differential signals: 3-bits + clock)
♦
Provide one TV Out header
• Miscellaneous
♦
Real Time Clock (RTC) with replaceable battery
♦
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
♦
GPIO interface
♦
SMBus interface
♦
Oops! Jumper (BIOS recovery) support
♦
Remote Access
♦
Watchdog Timer (WDT)
6 Reference Manual LittleBoard 735
Chapter 2 Product Overview
Block Diagram
Figure 2-2 shows the functional components of the LittleBoard 735.
TV Out Header
VGA
Header
PC/104
Connector
ISA
PCI - ISA
Bridge
Gigabit
Ethernet
Controller
82574IT
with
Internal
Transformer
GLAN2
RJ45
Connector
LVDS
Header
SATA
Connectors (2)
PC/104-Plus
Bus Connector
PCIe x1 Port3
PCI Bus
PCIe x1 Port1
Gigabit
Ethernet
Controller
82574IT
with
Internal
Transformer
MDIMDI
GLAN1
RJ45
Connector
RS232
Transceiver
RS422/485 Transceiver
Intel Atom N270
Graphics
Memory Hub (Northbridge)
82945GSE
I/O Hub
(Southbridge)
82801GBM
[ICH7-M]
AC’97
CODEC
and
CPU
and
IDE
USB
LPC Bus
DDR2
SODIMM
SMBus Header
GPIO Header
Compact Flash
IDE Header
USB Port 0 USB Port 1 USB Port 2 USB Port 3
USB Port 4
USB Port 5
PCIe x1 Port2
Super I/O
SCH3114I-NU
Clock
SMBus
PCI Express
Mini Card Connector
Utility 1 - PS/2 keyboard, battery, reset, speaker
Utility 2 - PS/2 mouse, SMBus, power button
Floppy
Parallel
RS232
Transceiver
and
RS422/485 Transceiver
LB735_BlkDiag_c
COM 2
COM 1
COM 3
COM 4
Figure 2-2. Functional Block Diagram
LittleBoard 735 Reference Manual 7
Chapter 2 Product Overview
Major Components (ICs)
Table 2 -1 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
Chip Type Mfg. Model Description Function
CPU (U1) Intel Atom N270 Single-core 1.6GHz, 2.5W
processor with on-die 512kB, 8­way L2 cache
Graphics and Memory Chipset (U2)
I/O Hub (U4) Intel 82801GBM
Super I/O (U15 on back of the board) [See Figure 2-4]
Ethernet Controller 1 (U10)
Ethernet Controller 2 (U37)
ISA Bridge (U13) ITE IT8888F Interface between PCI bus and
Audio AC’97 CODEC (U14)
Intel 82945GSE Northbridge Graphics and
Memory controller hub
Southbridge Input/Output
(ICH7-M)
SMSC SCH3114I-NU Legacy I/O controller Provides
Intel 82574IT GLAN1 Gigabit Ethernet
Intel 82574IT GLAN2 Gigabit Ethernet
Realtek ALC203-LF Encoder and decoder of audio
controller hub
controller
controller
ISA bus
data for transmission, storage, encryption, playback, or editing
Manages Northbridge graphics and memory hubs and Southbridge I/O hub
Provides graphics controller and memory controller
Provides interfaces and controllers for peripheral devices
LPC I/O functions for serial, floppy, parallel, and utility interfaces
Generates PCIe 10T/ 100TX/ 1000T Ethernet signals
Generates PCIe 10T/ 100TX/ 1000T Ethernet signals
Migrates legacy ISA bus
Supports 20­bit DAC and 18-bit ADC resolutions
8 Reference Manual LittleBoard 735
Chapter 2 Product Overview
Table 2-1. Major Integrated Circuit Descriptions and Functions (Continued)
RS232 Transceiver (U17)
Analog Devices
ADM213EARSZ RS232 Transceiver for COM1
and COM2
Transmits and receives RS232 signals for serial ports 1 and 2
RS485/422 Transceiver (U19)
Linear LTC1334CG#PBF RS422/485 Transceiver for
COM1 and COM2
Transmits and receives RS485/422 signals for serial ports 1 and 2
RS232 Transceiver (U21)
Analog Devices
ADM213EARSZ RS232 Transceiver for COM3
and COM4
Transmits and receives RS232 signals for serial ports 3 and 4
RS485/422 Transceiver (U22)
Linear LTC1334CG#PBF RS422/485 Transceiver for
COM3 and COM4
Transmits and receives RS485/422 signals for serial ports 3 and 4
LittleBoard 735 Reference Manual 9
Chapter 2 Product Overview
Key: U1 - CPU U2 - Northbridge Memory Hub U4 - Southbridge I/O Hub U10 - GLAN1 Ethernet Controller U13 - PCI-to-ISA Bridge U14 - Audio CODEC U17 - RS232 Transceiver - COM1/COM2 U19 - RS485/422 Transceiver - COM1/COM2 U21 - RS232 Transceiver - COM3/COM4 U22 - RS485/422 Transceiver - COM3/COM4 U37 - GLAN2 Ethernet Controller
U4
U14
U13
U21
U22
Figure 2-3. Component Locations (Top Side)
U10
U37
LB735_Comp_Top_d
10 Reference Manual LittleBoard 735
Chapter 2 Product Overview
Key: U15 - Super IO Controller J37 - PCI Express Mini Card Socket J38 - PCI Express Mini Card Latch
J37
J38
Figure 2-4. Component Locations (Bottom Side)
U15
LB735_Back_b
LittleBoard 735 Reference Manual 11
Chapter 2 Product Overview
Headers and Connectors
Table 2 -2 describes the headers and connectors shown in Figure 2-6 on page 14. All I/O headers use 0.100"
(2.54mm) pitch unless otherwise indicated.
Table 2-2. Header and Connector Descriptions
Jack # Name Description
BAT1 Battery Socket Battery socket for 3 volt Lithium battery
J1A,B, C,D
J2A,B, C,D
J3 Video (VGA) 12-pin, 0.079" (2mm), header for output to a VGA compatible display
J6 IDE 40-pin standard header for the primary IDE interface
J8 Compact Flash 50-pin, 0.050" (1.27mm), socket accepts Type I or Type II Compact Flash
J9 Audio In/Out 26-pin, 0.079" (2mm), header for all of the audio signals (input/output)
J10 GLAN1 8-pin, RJ45 connector for 10/100/1000BaseT Gigabit Ethernet port 1 with
J11 Serial A 20-pin header for serial ports 1 and 2 (COM 1 & COM 2)
J12 Serial B 20-pin header for serial ports 3 and 4 (COM 3 & COM 4)
J13 Utility 2 24-pin header for mouse, SMBus, and power button
J14 USB 2 & 3 10-pin, 0.079" (2mm) header for USB2 and USB3 ports
J15 Utility 1 16-pin header for keyboard, external battery, reset switch, and speaker
J16 Parallel 26-pin header for parallel port
J17 Floppy 34-pin header for floppy disk drive interface
J18 GLAN2 8-pin, RJ45 connector for 10/100/1000BaseT Gigabit Ethernet port 2 with
J19 Power In 7-pin, 0.156" (3.96mm), header for input power
J26 Video (LVDS) 30-pin, 0.079" (2mm), header for LVDS compatible video displays
J30 Power On 3-pin header for ATX power-on functions
J31 Memory 200-pin, 0.024" (0.60mm) socket for DDR2 SDRAM SODIMM
J32 SATA1 7-pin, 0.050" (1.27mm) standard connector for serial ATA
J33 SATA2 7-pin, 0.050" (1.27mm) standard connector for serial ATA
J34 Optional Fan 3-pin header provides +5V or +12V, tach, and ground to optional CPU fan
J35 Battery Input 2-pin, 0.049" (1.24mm) header for power from external battery
J36 TV Out
J37 PCI Express
PC/104 bus 104-pin standard connector for PC/104
PC/104-Plus 120-pin, 0.079" (2mm), standard connector for PCI bus
cards
magnetics
magnetics
6-pin header for TV Out signals
52-pin, 0.012" (0.30mm) standard socket for PCI Express Mini Card Mini Card (on back of the board; see
Figure 2-4 on page 11)
functions
12 Reference Manual LittleBoard 735
Chapter 2 Product Overview
Table 2-2. Header and Connector Descriptions (Continued)
J38 Latch (on back
Latch for the PCI Express Mini Card connector of the board; see Figure 2-4
on page 11)
J39 USB 4 & 5 10-pin, 0.079" (2mm) header for USB4 and USB5 ports
J40 GPIO
J41 DNP
J42 DNP
J43 DNP
10-pin, 0.079" (2mm) header for General Purpose IO signals
Do not populate
Do not populate
Do not populate
J44 USB 0 & 1 10-pin, 0.079" (2mm) header for USB0 and USB1 ports
J45 SMBus
J46 Power On
5-pin, 0.049" (1.25mm) header for external device connection
5-pin header for power-on button and reset switch Button and
Reset Switch
J47 LED - GLAN1
J48 LED - GLAN2
5-pin, 0.049" (1.25mm) header for Gigabit Ethernet1 external LED
5-pin, 0.049" (1.25mm) header for Gigabit Ethernet2 external LED
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). The second number in the parenthesis is always directly across from pin 1. See Figure 2-5.
10
20-pin, two rows, Odd/Even, (1, 2)
19
20
5
1
20-pin, two rows,
Or
Consecutive, (1, 11)
678910
234
Figure 2-5. Pin Sequence Identification
53
15 1120
124
LB735_ConNum
LittleBoard 735 Reference Manual 13
Chapter 2 Product Overview
Key: BAT1 J1 J2 J3 J6 J8 J9 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J26 J30 J31 J32 J33 J34 J35 J36 J39 J40 J41 J42 J43 J44 J45 J46 J47 J48 JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 JP9 JP10
JP7
JP6
J48
J19
LB735_Conn_d
J30
J45
BAT1
J10
J18
Ethernet Grounding Pad
Board Grounding Pad
Figure 2-6. Connector Locations (Top Side)
CAUTION 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.
NOTE Pin 1 is shown as a black pin (square or round) on all headers in all illustrations.
14 Reference Manual LittleBoard 735
Chapter 2 Product Overview
Jumper Header Definitions
Table 2 -3 describes the jumper headers shown in Figure 2-7.
Table 2-3. Jumper Settings
Jumper # Installed Removed/Installed
JP1 – RTC (Real Time
Clock) Reset
JP2 – Power Management Power Up by S3 (pins 1-2)
JP3 – Serial Port 2 RS485 Termination
JP4 – Serial Port 1 RS485 Termination
JP5 – Fan Voltage Selection Enable +5V (pins 1-2) Default Enable +12V (pins 2-3)
JP6 – Compact Flash
Master/Slave
JP7 – Compact Flash Voltage Selection
JP8 – LVDS Voltage
Selection
JP9 – Serial Port 4
RS485 Termination
JP10 – Serial Port 3
RS485 Termination
Enable (pins 1-2) Disable (Removed) Default
Power Up by S5 (pins 2-3)
Default
Enable Termination (pins 1-2) Disable Termination (Removed)
Default
Enable Termination (pins 1-2) Disable Termination (Removed)
Default
Enable Slave (pins 1-2) Default [ATA Master]
Enable +5V (pins 1-2) Enable +3.3V (pins 2-3) Default
Enable +3.3V (pins 1-2) Default Enable +5V (pins 2-3)
Enable Termination (pins 1-2) Disable Termination (Removed)
Enable Termination (pins 1-2) Disable Termination (Removed)
Enable Master (pins 2-3) [ATA Slave]
Default
Default
Note: Only the jumper headers listed above are populated on the board. Jumpers or shunts use .079"
(2mm) pitch.
LittleBoard 735 Reference Manual 15
Chapter 2 Product Overview
Key: JP1 - RTC Reset JP2 - Power Management JP3 - Serial2 RS485 JP4 - Serial1 RS485 JP5 - Fan Voltage JP6 - Compact Flash Master/Slave JP7 - Compact Flash Voltage JP8 - LVDS Voltage JP9 - Serial4 RS485 JP10 - Serial3 RS485
JP1
JP8
LB735_Jmpr_a
JP5
JP9
JP2
JP7
JP10
JP6
JP4
JP3
Figure 2-7. Jumper Header Locations (Top Side)
16 Reference Manual LittleBoard 735
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