ADLINK Technology LitleBoard 800, Reference Manual

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Chapter 2 Product Overview
4 Reference Manual LittleBoard 800
Figure 2-1. Stacking PC/104 Modules with the
LittleBoard 800
Product Description
The LittleBoard 800 is an exceptionally high integration, high performance, rugged, and high quality single-
board system, which contains all the component subsystems of a PC motherboard plus the equivalent of up
to 3 expansion boards. Based on the Intel Pentium
®
M and Celeron
®
M ultra high performance, high-
integration processor, the LittleBoard 800 gives designers a complete, high performance embedded
processor based on the EBX form factor and conforms to the EBX V2.0 specifications.
Each LittleBoard 800 incorporates an Intel 855GME chipset for the Graphics and Memory Hub
(Northbridge) and the I/O Hub (Southbridge) controllers. This set includes the 82855GME, Graphics and
Memory Controller Hub, (also GMCH), which controls the graphics and memory interface. The other chip
in this set is the 82801DB, I/O Controller Hub 4 (ICH4), which controls some of the I/O functions on the
board. There are two additional chips that provide the remainder of the I/O functions: the Standard
Microsystems, LPC47B272, Super I/O controllers. Together the Intel and SMSC chips provide four serial
ports, an EPP/ECP parallel port, four USB 2.0 ports, PS/2 keyboard and mouse interfaces, floppy and two
Ultra/DMA 33/66/100 IDE controllers supporting two IDE drives each. To provide the ISA bus on the board
through the PC/104 connector, an ITE, IT8888F, PCI-to-ISA Bridge is included. The LittleBoard 800 also
supports up to 1GB of DDR RAM in a single 184-pin DDR DIMM slot, and an AGP4x equivalent graphics
controller, which provides CRT and LVDS flat panel video interfaces for most popular LCD panels.
The LittleBoard 800 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 version of the signal set provided on a desktop PC’s ISA and PCI buses at
8MHz and 33MHz clock speeds, respectively.
Among the many embedded-PC enhancements on the LittleBoard 800 that ensure embedded system
operation and application versatility are a watchdog timer, serial console support, battery-free boot, on-
board, high-density Compact Flash disk, and BIOS extensions for OEM boot customization.
The LittleBoard 800 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 Ampro MiniModules™ or other PC/104-compliant expansion boards, or
it can be used as a powerful computing engine.
Board Features
•
CPU features
♦
Intel 1.4GHz LV, Pentium® M 738, 1.0GHz ULV Celeron M 373, or 800MHz ULV Celeron M
Processors
♦
2MB (Pentium) or 512KB (Celeron) L2 cache (800MHz Celeron is cacheless)
4-40 nuts (4)
PC/104 Module
PC/104 Plus Module
Little Board 800
ISA Bus
Stackthrough
Expansion
Headers
0.6 inch spacers (4)
PCI Stack
Headers
through
4-40 screws (4)
0.6 inch spacers (4)
LB
800s
tack
th
ru