
Register Descriptions
41
Registers in A24
Address Space
There are several registers including a Status Register, Control Register,
Interrupt Register, Delay Register, the Input/Output Register, and the
Read/Write Decoder registers plus an EEPROM in A24 address space of the
Breadboard Module. The Module also provides a set of decoder lines located
from 20
h
through 2E
h
. Table 3-2 lists the address mapping
A24 Status Register
The offset of Status Register is 00
h
. It is a Read only register
•
BUSY*: 0-Circuit is busy (not stable yet).
•
EIRQX: 1-External interrupt
•
RIRQX:1-Circuit interrupt.
Table 3-2. Agilent E2259A Registers in A24 Memory
Address
Registers
FE
h
EEPROM
30
h
- FC
h
Reserved
20
h
- 2E
h
Read/Write Decoder Registers
16
h
- 1E
h
Reserved
14
h
I/O Register
12
h
Delay Register
10
h
Reserved
(06
h
- 0F
h
)
Reserved
04
h
Interrupt Register
02
h
Control Register
00
h
Status Register
b+00
h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Reserved
Read
Reserved
Busy*
Reserved
EIRQX
RIRQX
Summary of Contents for E2259A
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Page 5: ...2 Contents Appendix A Agilent E2259A Specifications 45 ...
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