SERIES IP511 INDUSTRIAL I/O PACK ISOLATED QUAD EIA/TIA-422B COMMUNICATION MODULE
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Table 3.1: IP511 I/O Space Address (Hex) Memory Map
Base
Addr+
MSB
D15 D08
LSB
D07 D00
LCR
Bit7
Base
Addr+
Serial Port C Registers:
20
Not Driven
1
READ - RBR
Port C Receiver
Buffer Register
0
21
20
Not Driven
1
WRITE - THR
Port C Transmitter
Holding Register
0
21
20
Not Driven
1
R/W - DLL
Port C Divisor Latch
LSB
1
21
22
Not Driven
1
R/W - IER
Port C Interrupt
Enable Register
0
23
22
Not Driven
1
R/W - DLM
Port C Divisor Latch
MSB
1
23
24
Not Driven
1
R/W - EFR
4
Port C Enhanced
Function Register
(“-64” models only)
1
25
28
Not Driven
1
R/W- XON-1 Word
Port C
SW Flow Control
4
1
29
2A
Not Driven
1
R/W- XON-2 Word
Port C
SW Flow Control
4
1
2B
2C
Not Driven
1
R/W- XOFF-1 Word
Port C
SW Flow Control
4
1
2D
2E
Not Driven
1
R/W- XOFF-2 Word
Port C
SW Flow Control
4
1
2F
Base
Addr+
MSB
D15 D08
LSB
D07 D00
Base
Addr+
24
Not Driven
1
READ - IIR
Port C Interrupt
Identification Register
25
24
Not Driven
1
WRITE - FCR
Port C FIFO Control
Register
25
26
Not Driven
1
R/W - LCR
Port C Line Control Register
27
28
Not Driven
1
R/W - MCR
Port C Modem Control
Register
29
2A
Not Driven
1
R/W - LSR
Port C Line Status Register
2B
2C
Not Driven
1
R/W - MSR
Port C Modem Status
Register
2D
2E
Not Driven
1
R/W - SCR
Port C Scratch Pad/
Interrupt Vector Register
2F
Shaded register entries apply to Model IP511-64 only and are
accessible after writing “BF” to the Line Control Register (LCR).
Table 3.1: IP511 I/O Space Memory Map...continued
Base
Addr+
MSB
D15 D08
LSB
D07 D00
LCR
Bit7
Base
Addr+
Serial Port D Registers:
30
Not Driven
1
READ - RBR
Port D Receiver
Buffer Register
0
31
30
Not Driven
1
WRITE - THR
Port D Transmitter
Holding Register
0
31
30
Not Driven
1
R/W - DLL
Port D Divisor Latch
LSB
1
31
32
Not Driven
1
R/W - IER
Port D Interrupt
Enable Register
0
33
32
Not Driven
1
R/W - DLM
Port D Divisor Latch
MSB
1
33
34
Not Driven
1
R/W - EFR
4
Port D Enhanced
Function Register
(“-64” models only)
1
35
38
Not Driven
1
R/W- XON-1 Word
Port D
SW Flow Control
4
1
39
3A
Not Driven
1
R/W- XON-2 Word
Port D
SW Flow Control
4
1
3B
3C
Not Driven
1
R/W- XOFF-1 Word
Port D
SW Flow Control
4
1
3D
3E
Not Driven
1
R/W- XOFF-2 Word
Port D
SW Flow Control
4
1
3F
Base
Addr+
MSB
D15 D08
LSB
D07 D00
Base
Addr+
34
Not Driven
1
READ - IIR
Port D Interrupt
Identification Register
35
34
Not Driven
1
WRITE - FCR
Port D FIFO Control
Register
35
36
Not Driven
1
R/W - LCR
Port D Line Control Register
37
38
Not Driven
1
R/W - MCR
Port D Modem Control
Register
39
3A
Not Driven
1
R/W - LSR
Port D Line Status Register
3B
3C
Not Driven
1
R/W - MSR
Port D Modem Status
Register
3D
3E
Not Driven
1
R/W - SCR
Port D Scratch Pad/
Interrupt Vector Register
3F
40
↓↓↓↓
7E
NOT USED
2
41
↓↓↓↓
7F
Shaded register entries apply to Model IP511-64 only and are
accessible after writing “BF” to the Line Control Register (LCR).
