The Embedded I/O Company

TPMC542 16/8 Channel Voltage & Current Range D/A

and 20 Channel LVTTL/TTL Digital I/O

Application Information

The TPMC542 is a standard single-wide PCI Mezzanine

Card (PMC) compatible module providing 16 or 8

channels

of

simultaneous

update

single-ended

unipolar/bipolar 16bit analog output and 20 channels of

tristate capable 5V-tolerant LVTTL/TTL digital input/output.

A 32 bit 33 MHz PCI interface is provided at the 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, the 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 upon an appropriate frame 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 target card in a

Multi-Board configuration.

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.

TEWS TECHNOLOGIES GmbH keeps the right to change technical specification without further notice.

All trademarks mentioned are property of their respective owners.

Issue 1.0.3

2017-08-31

TEWS TECHNOLOGIES GmbH

Am Bahnhof 7

25469 Halstenbek, Germany

Phone: +49 (0) 4101 4058 0

Fax: +49 (0) 4101 4058 19

e-mail: info@tews.com

www.tews.com