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PMC module provides high-density serial connectivity

Posted: 25 Apr 2011     Print Version  Bookmark and Share

Keywords:PMC module  serial communication  controller 

TEWS Technologies unveils the TPMC377 high-density Isolated Serial Communication Controller targeting applications in transportation, COTS, communications, and process control.

The conduction cooled, single-width, 32bit PMC module can operate with 3.3V and 5.0V PCI I/O signalling voltage. It provides 4 channels of high performance RS232/RS422/RS485 selectable serial connectivity with P14 I/O. Each of the serial channels is isolated from the system and against each other by a digital isolator and an on-board integrated DC/DC converter. The channels can be individually programmed to operate as RS232, RS422 or RS485 full/half-duplex interfaces. In addition, programmable termination is provided for the RS422/RS485 interfaces. After power-up, all serial I/O lines are in a high impedance state for critical applications.

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 channels generate interrupts on PCI interrupt INTA. For fast interrupt source detection the UART provides a special Global Interrupt Source Register.

Each serial channel of the PMC module has separate 64byte receive and transmit FIFOs to significantly reduce the processing overhead required to provide data to and from the transmitters and receivers. The FIFO trigger levels are programmable, and the baud rate is individually selectable up to 921.6kbps for RS232 channels and 5.5296Mbps for RS422 channels. The UART offers readable FIFO levels.

The TPMC377 offers an operating temperature range of -40°C to -85°C. All TEWS Technologies products feature a five-year warranty.

Extensive software support for major operating systems such as Windows, Linux, LynxOS, VxWorks, Integrity and QNX is available.

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