CM312 Datasheet, PDF (12/56 Pages) List of Unclassifed Manufacturers – Communications utilityModule

Chapter 1 INTRODUCTION
This manual gives information on the CM312 Communications utilityModule. This module
supports four versatile serial ports with jumper configurable IRQ lines and I/O addresses and one
10Base-T / 10Base-2 ethernet interface for your PC/104 applications.
CM312 Communications utilityModule
The CM312 Communications utilityModule was designed to provide four versatile serial ports and
an ethernet interface to support the Real Time Devices cpuModules and other standard PC/104
processor modules.
Features
The following are major features of the CM312 utilityModule.
Serial ports
• Compatibility with the Industry Standard 16C550
• Up to 1.5 Mbps baud transmit/receive operation (24Mhz)
• 16 byte transmit FIFO/16 byte receive FIFO with error flags
• Independent transmit and receive control
• Standard modem interface
• Jumper selectable to interrupt line, base address, RS232/RS422-485 mode per port
• Jumper selectable enable/disable per port
• Includes 42 different selectable I/O base addresses
• Extended temperature range: -40 to +85C
• Low power-consumption
• Typical from single +5V power supply
Ethernet
NE2000 compatible Ethernet controller
• LG Semicon 82C911 chipset
• internal 16k RAM
Multiple Ethernet interfaces
• 10Base-T UTP (unshielded twisted pair)
• 10Base-2 BNC
Software Configurable
CM312 Quad Serial utilityModule
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RTD Embedded Technologies, Inc.