Advantech A120-X5X, User Manual

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36 PPC-A84/A120 User's Manual
3.1 Introduction
The PCM-5821 is a highly reliable single board computer based on the
NS GXm 233/GX1 300MHz CPU. It offers built-in functionality
comparable to a complete industrial PC system, including a VGA/LCD
controller, network communications, compact flash diak in a small 8"
x 5.75" form factor.
For maximum performance, the PCM-5821 also supports an SDRAM
SODIMM socket that can accept up to 128 MB memory. On-board
features include an Ethernet interface, audio interface, socket for
Compact Flash Card, Enhanced IDE interface with up to Ultra DMA
transfer protocol, one parallel port, two serial ports (RS-232 and RS-
232/422/485) with DB-9 connector as COM1, and a mini-DIN PS/2
keyboard/mouse interface. An SVGA/LCD display controller (LCD,
and CRT displays) allows LCD screen resolutions up to 1024 x 768
and CRT resolutions up to 1280 x 1024 @ 16 M colors.
The PCM-5821 complies with the "Green Function" standard and
supports three types of power saving features: Normal, Doze, and
Sleep modes.
The display type configuration is done through software. A single
Flash chip holds the system BIOS and the VGA BIOS. This minimizes
the number of chips and eases configuration. You can change the
display BIOS simply by programming the Flash chip.
It also offers faster data access and longer MTBF than mechanical disk
drives and is an ideal solution for critical commercial or industrial
applications. The watchdog timer ensures the system will be reset if it
stops due to a program bug or EMI problem.