Computer/Embedded Technology


PC/104-Plus interface board with eight serial ports

31 October 2007 Computer/Embedded Technology

Digital-Logic's Microspace MSMX104+ is an interface board with eight serial PCI ports and a multiplexed 32 bit address/data bus. Each port can be configured individually for TTL, RS232 or RS485 signals and supports data transfer rates up to 250 Kbps. The compact board is based on the powerful 16C550 compatible PCI Bus UART EXAR XR17C158/V with eight channels, a 64 byte transmit and receive FIFO, and automatic RTS/CTS, DTR/DSR and Xon/Xoff software flow control. The solution is designed for sensor and data acquisition applications in industrial environments.

The PC/104-Plus board supports the full-duplex RS485 mode. A further feature is the individual disable function, which allows the user to disable unused ports to further reduce the power consumption. Because of its compatibility to serial PC standard interfaces, the board works with common communication software and operating systems like Windows and Linux.

The 90 mm x 96 mm x 15 mm (L x W x H) sized board requires a 5 V power supply and operates within the temperature range of 0° C to +70°C at a relative humidity up to 90%. Its typical current consumption is 250 mA. A periphery board is also available for the extended temperature range of -40°C to +85°C. The board is robust and resists shock up to 10 G and vibrations from 5 Hz to 2000 Hz.



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