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Chapter 2
4-40 screws (4)
0.6 inch spacers (4)
PCI Stack
through
Headers
0.6 inch spacers (4)
4-40 nuts (4)
Product Description
The LittleBoard 700 (LB 700) is an exceptionally high integration, high performance, rugged, and high
quality single-board system, which contains all the component subsystems of a PC/AT PCI motherboard
plus the equivalent of up to 5 PCI expansion boards. Based on either the ultra high performance, high-
integration 933MHz Low Voltage Pentium® III processor, or the Low-Power 650MHz Celeron
processor, or the low cost, Ultra Low-Power 400MHz Celeron processor, the LB 700 gives designers the
choice of a complete, high performance embedded processor based on the EBX form factor and
conforms to the EBX V1.1 specifications.
Each LB 700 incorporates a VIA Technologies, Inc. Twister chipset and provides four serial ports, a
EPP/ECP parallel port, four USB UHCI ports, PS/2 keyboard and mouse interfaces, floppy and two
Ultra/DMA 33/66/100 IDE controllers supporting two IDE drives each, two independent 10/100BaseT
Ethernet interfaces, and an audio AC97 CODEC on the board. The LB 700 also supports up to 1GB of
SDRAM in a single 168-pin DIMM slot, and a AGP4x graphics controller, which provides CRT and flat
panel video interfaces for the most popular LCD panels.
The LB 700 can be expanded through the PC/104 and PC/104-Plus expansion buses for additional
system functions. These busses offer compact, self-stacking, modular expandability. The PC/104 is an
embedded system version of the signal set provided on a desktop PC's ISA bus. The PC/104-Plus bus
includes this signal set, and in addition, signals implementing a PCI bus, available on an additional 120-
pin (4 rows of 30 pins) PCI expansion bus connector. This PCI bus operates at clock speeds up to
33MHz.
Among the many embedded-PC enhancements on the LB 700 that ensure embedded system operation
and application versatility are a watchdog timer, serial console support, battery-free boot, on-board high-
density CompactFlash disk, and BIOS extensions for OEM boot customization.
The LB 700 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 powerful computing engine. The LB 700 requires a single +5V power
supply.
6
PC/104 Module
PC/104 Plus Module
Little Board 700
Figure 2-1. Stacking PC/104 Modules with the LittleBoard 700
Reference Manual
Product Overview
Stackthrough
Expansion
Bus Headers
LittleBoard 700
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