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Our Emerald-MM PC/104 module gives you 4 serial ports operating at speeds up to 115kbps. The board is available in several models with different combinations of jumper-configurable serial protocols. This version (EMM-4M-XT) provides:
- All ports: each port configurable as RS-232/422/485 (set via jumper)
In RS-232 mode, the full complement of standard PC serial port signals (8 signals + ground) are provided for each port and are grouped onto two 20-pin headers (2 ports per header). In RS-422 mode, Signals RX+, RX-, TX+, and TX- are provided, along with ground. In RS-485 mode, signals TX+/RX+ and TX-/RX- are provided, along with ground.
A 16C554 quad serial port IC is used for the serial ports. This chip supports data transfer rates up to 115kbps and contains a 16-byte programmable FIFO buffer for each port to minimize processor overhead.
Key Features
- 4 serial ports
- RS-232/RS-422/RS-485
- Dual 20-pin I/O headers
- Up to 115kbaud per channel
- Flexible address & IRQ selection
- IRQ status register for WinNT
- Port parameters set via jumper
- +5V only power supply
- -40 to +85°C operation
- Proper hardware serial port with - works with any O/S!
- ROHS compliant
This board has a dual 20 pin connector - DSC serial cable is C-DB9M-2 .
This board is just one of a range of high quality serial, analog and digital I/O boards from Diamond Systems - refer to our main website for other boards in their range.
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