Adlink cPCI-7248 48-CH Opto-22 Compatible Digital I/O Module

Adlink cPCI-7248 48-CH Opto-22 Compatible Digital I/O Module

Key Features

PICMG 2.0 Rev 2.1

48-CH digital TTL/DTL input/output

Emulates 4/2/1 industry standard 8255 PPI (mode 0)

Direct interface with OPTO-22 compatible I/O modules Output port status read back

On board 8254 timer/counter chip

Programmable interrupt source

Introduction

The ADLINK cPCI-7248 and cPCI-7249R are 48-channel parallel digital input/output (DIO) Cards for the

PXI/CompactPCI form factor. The cPCI-7248 and cPCI-7249R devices emulate mode 0 of the industry standard 8255

Programmable Peripheral Interface (PPI) chips. Each PPI offers three 8-bit ports: Port A, Port B and Port C. The Port

C is divided into 2 nibble-wide (4-bit) ports.

The cPCI-7248 and cPCI-7249R devices have programmable timer/counters. One 16-bit counter is available for event

counting, while the other 32-bit timer is available for timed interrupt generation. The cPCI-7248 and cPCI-7249R

devices provide multiple programmable interrupt sources from DIO channels, as well as the output of the timer.

The cPCI-7249R is the extended version of the cPCI-7248. which features one more latch register and rear I/O connectivity.

Features

cPCI-7248

■    3U    Eurocard    form    factor,    CompactPCI    compliant

(PICMG 2.0 R2.1)

■    48-CH    digital    TTL    inputs/outputs

■    Emulates    4/2/1    industry    standard    8255    PPI    (mode    0)

■    Buffered    circuits    for    higher    driving    capability

■    Ports    are    independently    configurable    as    input    or    output

■    External    latch    signal    available    for    digital    inputs

■ Output status read back

■    Known    power-up    states

■    Onboard    8254    timer/counter    chip

■ 1-CH 16-bit event counter to generate event interrupt

■    1-CH    32-bit    timer    to    generate    watchdog    timer    interrupt

■ Multiple programmable interrupt sources

■    +12    V    and    +5    V    power    available    on    the    connector

■    Onboard    resettable    fuses    for    power    output    protection

■    Rear    I/O    available    on    cPCI-7249R

■    Operating Systems

•    Windows 7/Vista/XP/2000/2003

•    Linux

■    Recommended Software

•    AD-Logger

•    VB.NET/VC.NET/VB/VC++/BCB/Delphi

•    DAQBench

■    Driver Support

•    DAQPilot for Windows

•    DAQPilot for LabVIEW™

•    DAQ-MTLB for MATLAB®

•    PCIS-DASK for Windows

•    PCIS-DASK/X for Linux

Specifications

Digital I/O

■ Number of channels: 48 inputs/outputs

■ Compatibility: 5 V/TTL

■ Power-on states:

pull-high, pull-low, floating (programmable)

■ Digital logic levels

•    Input high voltage: 2-5.25 V

•    Input low voltage: 0-0.8 V

•    Output high voltage: 2.4 V minimum

•    Output low voltage: 0.5 V maximum

■ Output driving capacity

•    Source current: 15 mA

•    Sink current: 24 mA

■ External digital input latch available on cPCI-7249R

■ Data transfers: programmed I/O