TEWS Technologies extends mPCIe module family into communications

To minimise obsolescence issues, the serial communication controller is implemented in FPGA logic along with the bus master capable PCIe interface, guaranteeing long-term availability and having the option to implement additional functions in the future.

Data transfer to and from host memory is handled via TMPE863-initiated DMA cycles for minimum host/CPU intervention.  Each channel has a receive and transmits FIFO of 512 long words (32bit) per channel for high data throughput.

To support many possible applications, several serial communication protocols are supported for each channel, such as asynchronous (with oversampling), isochronous, synchronous, and HDLC modes.

Available signal encodings for synchronous data communication are NRZ, NRZI, FM0, FM1, and Manchester.

Available clock sources are 14.7456MHz for standard asynchronous baud rates, 10MHz for the 10Mbit/s synchronous data rate and 24MHz for other baud or data rates.

Each channel provides various interrupt sources which can be enabled or disabled individually.

The available differential I/O lines for EIA-422, EIA-485 full-duplex are terminated with 120Ω on-board. The I/O signals are accessible through a 30-pin Pico- Clasp latching connector. The TA309 Cable Kit is available to support this connector.

The TMPE863 provides a basic heatsink to facilitate thermal management. The heatsink can be used to install additional cooling solutions like passive or active heatsinks or to provide a thermal connection to an enclosure.

Software drivers for VxWorks, Linux, Windows, QNX and Integrity are available. To support long-term programs, the TEWS´ modules have a 5-year warranty.