Mercator
Mercator PC/104-Plus Expansion Module with Ethernet and Digital I/O The Mercator PC/104 module integrates 2 PCI-based 10/100 Ethernet ports with 24 user-configurable digital I/O lines in the compact and rugged PC/104 format. This 2-in-1 combination of Ethernet and digital I/O can help lower the size and cost of your embedded system by eliminating one additional board from your PC/104 stack. The Ethernet ports utilize the National Semiconductor DP83815 Mac + Phy PCI controller chip and are NE2000 compatible. The 24 digital I/O lines are based on an 82C55 chip and feature programmable direction in 4- and 8-bit groups. All I/O lines contain user-configurable 10K Ohm pull-up resistors for convenience. Extended temperature capability (-40 to +85ºC) enables the board to operate in environments with extreme temperature swings, such as vehicles or outdoor installations. In addition, the board may be custom-configured with 0-ohm resistors in place of jumper blocks for increased ruggedness in high-vibration environments. Diamond Systems offers appropriate mating cables for your convenience. Cable no. C-PRZ-02 provides a panel-mountable RJ-45 connector for the Ethernet, and cable no. C-26-18 is a 26-conductor ribbon cable for the digital I/O. A low-cost version with one Ethernet port and no digital I/O is also available as model no. MRC-100-XT.
Emerald-MM-DIO
Emerald-MM-DIO 2 in 1 For users who need a higher level of integration than our standard products deliver, we offer this two-in-one board with 4 RS-232 serial ports, 48 digital I/O lines, and extended temperature operation. Each serial port provides the standard set of PC serial port signals. The ST16C554 quad UART chip on board contains a 16-byte FIFO for each port and supports data rates of up to 115kbps. Interrupt sharing is fully supported among the four serial ports, and an interrupt status register enables the board to operate under Windows NT. Eight different address combinations are possible, and any of 11 different interrupt levels can be used. The 48 digital I/O lines feature programmable direction on a line by line basis, and all lines have 10KOhms pull-up resistors. One group of 24 lines includes the additional feature of programmable edge detection. Both active line selection and edge polarity are programmable. Status registers indicate which, if any, lines have changed logic levels in the selected manner since the last status check. An interrupt can be generated on the PC/104 bus whenever the indicated activity occurs.
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