User manual

ATHENA CPU User Manual V1.40 Page 5
ATHENA High-Performance Rugged Embedded CPU with Data Acquisition
1. DESCRIPTION
Athena is an embedded CPU board in a modified PC/104 form factor that integrates a complete
embedded PC, consisting of the following subsystems onto a single compact board:
♦ CPU
♦ Core PC Chipset (including memory controller, PCI interface, and ISA interface)
♦ Video
♦ Sound
♦ Ethernet
♦ Analog I/O
A detailed list of features is shown on the next page.
The single board Athena computer is a Pentium III class device with onboard central processing,
memory and memory management devices and I/O management for specific functions. It is
larger than the PC-104 PCB format on two sides, but uses the PC-104 mounting method and
interface specification. The computer communicates externally via an ISA bus as well as the
specified I/O ports. It generates onboard RGB video for CRT display systems and contains LVDS
formatting to drive a flat panel. The single board computer is powered from an externally
regulated +5VDC supply. The frequencies of processor operation and onboard RAM memory are:
The 400 Mhz Athena models are convection cooled (heat sink only). An integrated heat sink + fan
is provided for the 660 Mhz models.
The Athena CPU uses the ISA bus internally to connect serial ports 1 through 4, as well as the
data acquisition circuit, to the processor. The ISA bus is brought out to an expansion connector to
mate with add-on boards. Diamond Systems manufactures a wide variety of compatible PC/104
add-on boards for analog I/O, digital I/O, counter/timer functions, serial ports, and power supplies.
Model Processor Speed RAM Size Data Acquisition
ATH 400-128 400 Mhz 128MB Yes
ATH 400-128N 400 Mhz 128MB No
ATH 660-128 660 Mhz 128MB Yes
ATH 660-128N 660 Mhz 128MB No