TEWS Technologies high-density isolated async serial communication modules
RENO, Nev., 4 Sept. 2012. TEWS Technologies introduces its TXMC375, a conduction-cooled switched mezzanine card (XMC)-compatible module with eight channels of high-performance RS232/RS422/RS485 programmable asynchronous serial interfaces with P14 I/O, for applications in transportation, commercial off-the-shelf (COTS), communications, and process control.
The serial channels can be programmed individually to operate as RS232, RS422, or RS485 full duplex/half duplex interface. Programmable termination is provided for the RS422/RS485 interfaces. After power-up, all serial I/O lines are in a high-impedance state.
Each RS232 channel supports RxD, TxD, RTS, CTS, and GND. RS422 and RS485 full duplex support a four-wire interface (RX+, RX-, TX+, TX-) plus ground (GND). RS485 half duplex supports a two-wire interface (DX+, DX-) plus ground (GND).
All serial channels use ESD-protected transceivers. ESD protection is up to ±15kV.
To offload host CPU processing, each serial channel of the XMC module has separate 256-byte receive and transmit FIFOs that reduce the processing overhead required for data to and from the transmitters and receivers. The FIFO trigger levels are programmable, and the baud rate is individually selectable up to 1 Mbps for RS232 channels and 10 Mbps for RS422 channels. The UART offers readable FIFO levels.
The TXMC375 operates in an extended temperature range (-40°C to +85°C) and features a five-year warranty. Software support for major operating systems, such as Windows, Linux, LynxOS, VxWorks, Integrity, and QNX, is available.