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, output ranges are configurable from 0 to 5V, 0 to 10V, ±5V, ±10V, 4 to 20mA, 0 to 20mA and 0 to 24mA. 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.
A debounce filter can be configured to eliminate bouncing on the digital I/O inputs. Each digital I/O line has a 4.7kΩ 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.
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