ADLINK PCI-7224 - Manual (Page 9)

Introduction
• 1
1
Introduction
The 7248/7296 series products are general purpose digital I/O cards. This
series includes four cards:
•
PCI-7224: 24-CH DIO card
•
PCI-7248: 48-CH DIO card
•
PCI-7296: 96-CH DIO card
•
cPCI-7248: 3U CompactPCI 48-CH DIO card
• cPCI-7249R:
3U CompactPCI 48-CH DIO card with Rear I/O
The 7248 series products are multi-function digital I/O boards used for
industrial PC with PCI bus or CompactPCI bus. The cards are Plug and Play
therefore it is not necessary to set any jumper for configuration of I/O address
or interrupt resources.
PCI-7248 and PCI-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
specifications for PCI-7224 and cPCI-7248’s are not specified, they are the
same as that of PCI-7248.
The PCI-7248 emulates two industry standard 8255 Programmable
Peripheral Interface (PPI) chips operated under mode zero configuration. The
PCI-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 PC Low. Each
connector corresponds to one PPI chip with 24 DIO points. PCI-
7224/7248/7296 are equipped with one, two, and four 50-pin male ribbon
connectors respectively. The cPCI-7248 is equipped with one 100-pin SCSI-
type connector.