User`s manual

Introduction 1
72XX Series
User’s Manual
1 Introduction
The 7248/7296 series products are general purpose digital I/O
cards. This series includes the following cards:
 PCI-7224: 24-CH PCI DIO card
 PCI-7248: 48-CH PCI DIO card
 PCI-7296: 96-CH PCI DIO card
 cPCI-7248: 3U CompactPCI 48-CH DIO card
 cPCI-7249R: 3U CompactPCI 48-CH DIO card with Rear
I/O
 PCIe-7248: 48-CH PCI Express DIO Card
 PCIe-7296: 96-CH PCI Express DIO Card
The 7248 series products are multi-function digital I/O boards
used for industrial PCs with PCI, PCI Express, or CompactPCI
buses. The cards are Plug and Play therefore it is not necessary to
set any jumper for configuration of I/O address or interrupt
resources.
The PCI/PCIe-7248 and PCI/PCIe-7296 are 48-channel and 96-
channel DIO cards respectively. PCI-7224 is a reduced version of
PCI-7248, where all functions are exactly the same as PCI-7248
with the exception that there are only 24 channels. The cPCI-7248
is the 3U CompactPCI version of the PCI-7248. The software is
fully compatible with the PCI-7248. In this manual, if the specifica-
tions for PCI-7224, PCIe-7248/7296, and cPCI-7248 are not spec-
ified, they are the same as that of PCI-7248.
The PCI/PCIe-7248 emulates two industry standard 8255 Pro-
grammable Peripheral Interface (PPI) chips operated under mode
zero configuration. The PCI/PCIe-7296 emulates four PPI chips.
These two cards are compatible not only on hardware connectors
but also on software programming.
The cPCI-7248 is the CompactPCI version of PCI-7248. All the
functions are exactly the same as PCI-7248. The cPCI-7249 is an
extended version of cPCI-7248, with an additional latch register
and rear I/O capability.
Every PPI connector has 3 ports: PA, PB, and PC. The PC can
also be subdivided into 2 nibble-wide (4-bit) ports - PC Upper and