Product category:
Embedded Computing and Control
News Release from: Diamond Systems | Subject: Emerald-MM-8P PC/104
Edited by the Electronicstalk Editorial
Team on 13 March 2006
PC/104 module embeds eight serial ports
The Emerald-MM-8P PC/104 offers eight multiprotocol serial ports on a single PC/104 module with complete software configurability.
Available now from Diamond Systems Corporation, the Emerald-MM-8P PC/104 offers eight multiprotocol serial ports on a single PC/104 module with complete software configurability The board is designed to work in PC/104-expandable embedded computer systems running Linux, Windows, QnX, VxWorks and DOS
This article was originally published on Electronicstalk on 27 Jan 2004 at 8.00am (UK)
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Each of the eight serial ports on Emerald-MM-8P can be individually selected for RS232, RS422 or RS485 (both local echo and no echo) under software control.
I/O addresses and interrupt levels are also programmable, with interrupt sharing available for any number of ports.
Each port may further be enabled or disabled in software.
All configuration data is stored in an onboard EEPROM and is loaded automatically on power-up.
A utility program shipped with the board can be used to configure all options and store the configuration to the EEPROM.
For applications where fixed addresses are desired, four groups of preset addresses are available with jumper settings that override the programmed settings.
In RS422 and RS485 mode, 150ohm termination resistors may be selected with jumpers.
Emerald-MM-8P is based on the 16C654 quad serial port IC.
This device contains four identical sets of registers, one for each port, and is compatible with the standard PC serial port.
Each port contains 64byte transmit and receive FIFOs to support high-speed datarates up to 450Kbit/s.
Emerald-MM-8P offers eight convenient digital I/O lines.
The direction of each line is independently programmable.
Two I/O headers are provided, with four serial ports and four digital I/O lines on each header.
The board operates on +5V only, eliminating the need for a +12V supply that is often required for serial port operation.
The board is further tested and guaranteed for reliable operation over the extended temperature range of -40 to +85C.
In quantities up to nine units, the Emerald-MM-8P is priced at $250.
Volume discounts apply when purchasing 10 or more units.
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