PCI-DIO Cards

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PCI-7296/7248/7224Opto-22 Compatible 96/48/24-CH DIO Cards

ports; PA, PB, and PC. PC is sub-divided into 2

nibble-wide (4-bit) ports. Each digital channel

has an individual pin on the OPTO-22 connec-

tor. All 96/48/24 digital I/O channels can sink

24mA for high driving capacity applications.

Programmable Timer/CounterPCI-7296/48/24 each have a programmable

timer counter for generating periodic interrupts

to the host processor. The timer/counter chip is

82C54, which includes three 16-bit counters.

One counter is used as an event counter for

counting events coming from one input chan-

nel. The another two timers are cascaded

together making a 32-bit timer which can con-

trol the rate of interrupt generation.

Features■ 32-bit PCI-Bus, Plug and Play

■ 96/48/24 TTL/DTL compatible digital I/O lines

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

■ Buffered circuits for higher driving capacity

■ Direct interface with OPTO-22 compatible I/O modules

■ Output port status read back

■ On board 8254 timer/counter chip

■ A 32-bit timer to generate watchdog timer interrupt

■ A 16-bit event counter to generate event interrupt

■ Programmable interrupt source

■ Dual interrupt system

■ Provides 12V and 5V power supply to OPTO-22

connectors

■ On board resettable fuses to protect power supply

■ Compact size (suitable for any size chassis)

IntroductionThe PCI-7296, PCI-7248 PCI-7224 are high

density parallel digital I/O boards with 96/48/24

I/O channels. The header connectors are fully

compatible with industry Opto-22 standard.

Therefore, PCI-7296/48/24 can fully utilize the

Opto-22 external devices used in the ISA age.

The PCI plug and play feature makes these

boards easier to install than any other ISA bus

cards. It is time to get into the PCI age for new

industrial applications.

PCI Bus Plug and PlayThe PCI-7296/48/24 uses a PCI controller

ASIC to interface with the PCI bus. The ASIC

fully implements the PCI local bus specification

Rev 2.1. All bus relative configurations, such

as base memory address and interrupt assign-

ment, are automatically controlled by hardware

and PCI BIOS. It does not need user interac-

tion and pre-study for PC configurations. This

reduces the burden of searching for conflict-

free configurations. Hence, it saves more time

than using the ISA bus cards.

Parallel Digital I/OOn-board circuits emulate the industry stan-

dard 8255 programmable peripheral interface

(PPI) chips. The PCI-7296/48/24 provides

4/2/1 PPI chips. Each PPI offers three 8 bit

Dual Internal SystemThe PCI-7296/48/24 can accept dual interrupt

sources. One source is from I/O port or the

event counter, the another source is from I/O

port or the timer chip. The dual interrupt config-

uration is very flexible for any industrial applica-

tion. For users who do not want use any inter-

rupt, a software utility is used to disable the

interrupt so that the PCI plug & play BIOS will

not assign any interrupt vector for this card.

Timer/Counter System of PCI-7296/48/24

PCI-7248

PCI-DIO Cards

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Digital I/O Timer/ Counter Cards

Specifications■ I/O channels

• 96 digital I/O for PCI-7296

• 48 digital I/O for PCI-7248

• 24 digital I/O for PCI-7224

■ I/O characteristics: TTL/DTL compatible

■ Data transfer modes: Interrupt,

Programmed I/O

■ Input signal• Logic high: 2.0V to 5.25V

• Logic low: 0.0V to 0.80V

• Logic high current: 22.0 µA

• Logic low current: 0.2 mA

■ Output signal (Port A & B)• Logic high: 2.4V min.

• Logic low: 0.5V max.

• Logic high current: 2.6 mA

• Logic low current: 24.0mA

■ Output signal (Port C)• Logic high: 2.4V min.

• Logic low: 0.4V max.

• Logic high current: 15.0 mA

• Logic low current: 24.0 mA

■ Operating temperature: 0˚~ 60˚C

■ Storage temperature: -20˚~ 80˚C

■ Humidity: 5 ~ 95%, non-condensing

■ I/O connector: 50-pin male ribbon connector

■ Bus interface: 32 bits slave PCI

■ Transfer rate: 500 K bytes/sec typical

■ Power requirement (without external devices)

PCI-7296+5V @ 860 mA (typical)

PCI-7248+5V @ 500 mA (typical)

PCI-7224+5V @ 330 mA (typical)

PCB dimension

• PCI-7248/7224: 148 mm x 102 mm

• PCI-7296: 166 mm x 102 mm

Termination Boards • TB-24R • TB-24P

• TB-16P8R • TB-24

• DIN-50 • DIN-24G

• DIN-24P • DIN-24R

Ordering InformationPCI-729696 Channel Digital I/O Card

PCI-724848 Channel Digital I/O Card

PCI-722424 Channel Digital I/O Card

Note 1: The PCI-7224 is the 24-channel version of PCI-7248.The software

of PCI-7224 is exactly the same as PCI-7248.

Pin Assignments of Connector

Dual Interrupt System of PCI-7248/96

PCI-7296