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DS-102
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35 pages, 188.42 Kb
DS-102 Dual Channel
RS-232
Asynchronous Communications Adapter
User's Manual
Revision 3.00 August 13, 1993
Contents
Main
Page
VIII. TROUBLESHOOTING
V. EXTERNAL CONNECTIONS
VII. SPECIFICATIONS
VI. SERIAL PORT FUNCTIONAL DESCRIPTION
IV. SETTING INTERRUPT LEVELS (IRQS)
Page
Page
Page
I.GENERAL INFORMATION
II.INSTALLATION
Figure 2 --- Diagram of DS-102
III.ENABLING AND ADDRESSING PORTS
Setting the address
Serial 2 uses SW2
SW1
5
SW2
Figure 4 --- Serial Port base I/O address selection switches
J4
Page
IV.SETTING INTERRUPT LEVELS (IRQS)
J5
Serial 2 J6
Serial 1
Interrupt Sharing
Serial 1 uses J2 Serial 2 uses J3
V.EXTERNAL CONNECTIONS
DS-102 User's Manual
Figure 11 --- Cabling requirements for RS-232-C devices (cables using 25-pin connectors shown)
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J7 -- Serial 1 J8 -- Serial 2
Figure 13 --- DS-102 connector definitions for RS-232-C
Figure 14 --- DS-102 Output connectors
Page
VI.SERIAL PORT FUNCTIONAL DESCRIPTION
Accessing the Serial Port registers
INTERRUPT ENABLE REGISTER
INTERRUPT IDENTIFICATION REGISTER
Figure 18 --- IIDx bit decoding
FIFO CONTROL REGISTER (16550 only)
Figure 19 --- 16550 FIFO Control Register bit definitions
LINE CONTROL REGISTER
Figure 20 --- Line Control Register bit definitions
MODEM CONTROL REGISTER
LINE STATUS REGISTER
MODEM STATUS REGISTER
SCRATCHPAD REGISTER
FIFO INTERRUPT MODE OPERATION (16550 UART only)
FIFO polled mode operation (16550 UART only)
BAUD RATE SELECTION
J1
Figure 25 --- Divisor Latch settings for common baud rates using 1.8432 MHz input clock
VII.SPECIFICATIONS
VIII. TROUBLESHOOTING