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PCI-1753 User's Manual
3.1 Overview
This chapter describes the operating characteristics of the PCI-1753/
1753E. The driver software bundled with this card allows a user to
access all of the card's functions without register level programming.
Please see the User's Manual included on the driver CD-ROM for
more information. For users who prefer to implement their own bit-
level programming to drive the card's functions, information useful
for making such a program is included in this chapter.
3.2 Digital I/O Ports
3.2.1 Introduction
The PCI-1753 and 1753E each emulate four 8255 programmable
peripheral interface (PPI) chips in mode 0, but with higher driving
capability than a standard 8255 chip. Each of these 8255 chip
emulators has 24 programmable I/O pins that are divided into three 8-
bit ports. The total 96 digital I/O pins on either the PCI-1753 or the
PCI-1753E are divided into 12 ports, designated PA0, PB0, PC0, PA1,
PB1, PC1, PA2, PB2, PC2, PA3, PB3 and PC3. Each port can be
programmed as an input or an output port. The I/O pins in port A0 are
designated PA00, PA01,..., PA07; the pins in port B0 are designated
PB00, PB01,..., PB07, etc. These port names are used both in this
manual and in the software library. Please refer to Section 1.5, Pin
Assignments.
3.2.2 8255 Mode 0
The basic 8255 mode 0 features included on the PCI-1753/1753E
cards are:
• 8-bit I/O ports - port A (PA) and port B (PB)
• Port C is divided into two nibble-wide (4-bit) I/O ports - PC upper
and PC lower
• Any port can be used for either input or output.
• Output status can be read back.
Summary of Contents for PCI-1753
Page 1: ...PCI 1753 1753E 96 192 bit Digital I O Card User s manual ...
Page 5: ...1 General Information CHAPT ER ...
Page 11: ...Chapter 1 Gerneral Information 7 Figure 1 1 PCI 1753 1753E Block Diagram 1 6 Block Diagram ...
Page 12: ...8 PCI 1753 User s Manual ...
Page 13: ...Chapter 2 Installation 9 2 Installation C H A P T E R ...
Page 20: ...16 PCI 1753 User s Manual ...
Page 21: ...Chapter 3 Function Description 17 3 Operation C H A P T E R ...
Page 33: ...Appendix A Calibration 29 A Register Format of PCI 1753 1753E A P P E N D I X ...
Page 36: ...32 PCI 1753 User s Manual ...
Page 37: ...Appendix A Calibration 33 B Pin Assignments of Cable PCL 10268 A P P E N D I X ...