Chapter 2 | | | | | | | | | | | | | Product Overview |
4-40 screws (4) | | | | | | | PC/104 Module | | | | | | |
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0.6 inch spacers (4) | | | | | | | PC/104 Plus Module | | | | | | | |
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PCI Stackthrough | | | | | | | | | | | | | | | | | | | | | | Expansion |
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Headers | | | | | | | | | | | | | | | | | | | | | | |
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4-40 nuts (4) | LittleBoard 550 | LB550stackthru |
0.6 inch spacers (4) | |
Figure 2-1. Stacking PC/104 Modules with the LittleBoard 550
Product Description
The LittleBoard 550 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. The LittleBoard 550 is based on one of these ultra high performance, high-integration processors; 1GHz Via 1Eden™ ESP 10000, 533MHz Eden™ ESP 5000, or the low cost 300MHz Eden™ ESP 3000 CPU. This gives designers more of a choice when selecting a complete, high performance embedded processor based on the EBX form factor that conforms to the EBX V1.1 specifications.
Each LittleBoard 550 incorporates the Via Technologies Twister-T chipset (VT8606 and VT82C686B) and a Secondary I/O controller in the Standard Microsystems, Super I/O (SP37E760) controller chip to provide a floppy and two Ultra/DMA 33/66/100 IDE controllers supporting two IDE drives each channel, four serial ports, a EPP/ECP parallel port, four USB OHCI ports, PS/2 keyboard and mouse interfaces, and an audio AC’97 CODEC on the board. The LittleBoard 550 also supports two independent 10/100BaseT interfaces, 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 LVDS and TFT/LCD panels.
The LittleBoard 550 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. The PCI bus operates at clock speeds up to 33MHz.
Among the many embedded-PC enhancements on the LittleBoard 550 that ensure embedded system operation and application versatility are a watchdog timer, serial console support, battery-free boot, on- board high-density CompactFlash socket, and BIOS extensions for OEM boot customization.
The LittleBoard 550 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 LittleBoard 550 requires a single +5V power supply.
