User`s manual

TABLE OF CONTENTS
List of Figures iii
I. General Information 1
II. Installation 2
III. Addressing Ports 5
IV. Interrupt Level (IRQ) 8
Interrupt Sharing 8
Interrupt Status Register 8
V. External Connections 10
Channel Output Configuration 11
VI. Serial Port Functional Description 14
Accessing the Serial Port Registers 15
Interrupt Enable Register 16
Interrupt Identification Register 16
FIFO Control Register 18
Line Control Register 19
Modem Control Register 20
Line Status Register 21
Modem Status Register 22
Scratchpad Register 22
FIFO Interrupt Mode Operation 23
FIFO Polled Mode Operation 24
Baud Rate Selection 25
VII. Serial Port Functional Description 27
VIII. Troubleshooting 28