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TEWS TECHNOLOGIES Introduces PMC with 16 or 8 Channel Voltage & Current Range D/A and 20 Channel LVTTL/TTL Digital I/O



Tews Technologies GmbH (Germany) – The TPMC542 is a standard single-wide PCI Mezzanine Card (PMC) module offering 16 or 8 channels of simultaneous update single-ended unipolar/bipolar 16-bit analog output and 20 channelsof tristate capable 5V-tolerant LVTTL/TTL digital input/output. Released as an extension to TEWS growing portfolio of PMC modules, the TPMC542 is designed for industrial control, telecommunication infrastructure, medical equipment, traffic control and COTS applications.

A 32-bit 33 MHz PCI interface is provided via PMC P11 and P12 connectors. The digital I/O signals and analog output signals are accessible via a Mini D Ribbon (MDR68) type front I/O connector.

For each individual D/A channel, following output ranges are configurable:
  • 0V to 5V Voltage Range
  • 0V to 10V Voltage Range
  • ±5V Voltage Range
  • ±10V Voltage Range
  • 4mA to 20mA Current Range
  • 0mA to 20mA Current Range
  • 0mA to 24mA Current Range
Additionally, for each Voltage Range a 20% over-range may be enabled.

The TPMC542 provides a D/A Sequencer unit for periodic simultaneous digital to analog conversions at a configurable conversion rate. In sequencer mode, the D/A conversion data is fetched from buffers in host memory by PCI master DMA transfer and is temporarily stored in an on-board data buffer. The Sequencer provides a Frame Mode used for repetitive frames of simultaneous D/A conversions on a frame trigger signal event.

If the card is operating as a master card in a Multi-Board configuration the conversion clock (conversion rate) and frame trigger signals may be generated on-board for internal use and may also be driven out on P14 rear I/O. If the card is operating as a target card in a Multi-Board configuration the conversion clock (conversion rate) and frame trigger signals may be sourced externally via the P14 rear I/O interface as well.

Each TPMC542 is factory calibrated. The correction data is stored in an on-board serial EEPROM unique to each PMC module. These correction values may be used to perform a hardware correction for every D/A channel and output range.

The digital I/O lines are ESD protected. Each digital I/O line has a dedicated line transmitter with individual output enable control and a dedicated line receiver. The line receivers are always enabled, so the digital I/O line level can always be monitored. Each digital I/O line input is capable of generating an interrupt triggered on rising edge, falling edge or both.

Additionally, a debounce filter can be configured to eliminate bouncing on the digital I/O inputs. Each digital I/O line has a 4.7kOhm pull resistor to a common reference. The common pull resistor reference is programmable by software (one setting for all digital I/O lines) to +3.3V, +5V or GND.

The module 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, VxWorks, Integrity and QNX is available.

For more information about the New TPMC542 Module from Tews Technologies GmbH click here.


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