TPMC541

TPMC541 32/16 Single-Ended or 16/8 Differential A/D Channels, 8/4 Voltage and Current Range D/A Channels, and 8 LVTTL/TTL Digital I/O Channels

Up to 32 or 16 channels single-ended or 16 or 8 channels differential bipolar 16 bit analog input, 8 or 4 channels of simultaneous update single-ended unipolar/bipolar 16 bit analog output and 8 channels of tristate capable 5V tolerant LVTTL/TTL digital input/output. All signals are accessible via Mini-D Ribbon (MDR68) type front I/O connector. The TEWS TPMC541 PMC module provides A/D and D/A sequencer units for periodic analog-to-digital and digital-to-analog conversions at a configurable conversion rate.

In sequencer mode, A/D conversion data is temporarily stored in an on-board data buffer and is transferred to system memory by PCI master DMA transfer while D/A conversion data is fetched from buffers in system memory by PCI master DMA transfer and is temporarily stored in an on-board data buffer. The sequencers provide a Frame Mode for repetitive frames of A/D and D/A conversions upon an internal or external trigger signal event.

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 master card in a Multi-Board configuration. The conversion clock (conversion rate) and frame trigger signals may also be sourced externally via the P14 rear I/O interface if the card is operating as a slave card in a Multi-Board configuration.

The TPMC541 also features 8 ESD protected digital I/O lines. 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 glitch filter can be configured to get rid of 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 to +3.3V, +5V or GND.

Each TPMC541 is factory calibrated. The correction data is stored in an onboard serial EEPROM. These correction values may be used to perform a hardware correction for every A/D channel and input range and any D/A channel and output range.

A wide range of drivers is available: Linux, Integrity, QNX, VxWorks and Windows. All drivers - except the Windows driver - are supplied as C source code.