LM12434CIWM NSC [National Semiconductor], LM12434CIWM Datasheet - Page 30

• Manufacturer Part Number: LM12434CIWM
• Description: Sign Data Acquisition System with Serial I/O and Self-Calibration
• Manufacturer: NSC [National Semiconductor]

A4 A3 A2 A1
0
0
0
0
0
0
1
1
1
1
1
1
6 0 Operational Information
X No interrupt is associated with this bit When programming the interrupt Enable Register bit-6 is a don’t care condition
LM12434 (Refer to Table IV)
LM12 L 438 only Must be set to ‘‘0’’ for the LM12434
0
1
0
1
0
1
0
0
0
0
1
1
to
to
to
0
1
0
1
0
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
(RAM Pointer
(RAM Pointer
(RAM Pointer
Instruction RAM
Instruction RAM
Instruction RAM
Interrupt Enable
Interrupt Status
Configuration
Limit Status
Conversion
Purpose
Register
Register
Register
Register
Register
Timer
FIFO
FIGURE 9 Bit Assignments for LM12434 and LM12 L 438 Internal Registers
e
e
e
00)
01)
10)
Type D15 D14 D13 D12
R W
R W
R W
R W
R W
R W
R
R
R
Instruction
Number or
Generate Interrupt (INT2)
Extended
Number of Conversion
Acquisition
Don’t Care
Conversion Results
Sign
Number of Unread
Results in FIFO to
Time
in FIFO
Don’t Care
Don’t Care
Timer Preset High Byte
(Continued)
Sign
Limit
Watch-
DIAG
2 Status
D11
dog
Data MSBs
Conversion
8 12 Timer Sync
D10
Test
e
Interrupt (INT1)
30
0
Instruction
Number to
Instruction
Generate
Executed
Number
being
l k
l k
D9
Pointer
RAM
Sign
Sign
D8
INST7
SYNC A Z Each
INT7
I O
D7
(MUXIN
S H IN
Cycle
D6
X
X
b
b
)
INST5 INST4 INST3 INST2 INST1 INST0
INT5
D5
I S
Conversion Data LSBs
Timer Preset Low Byte
Limit
Stand-
INT4
Limit
Limit
D4
by
1 Status
(MUXIN
S H IN
1
2
INT3
CAL
Full
D3
a
a
)
Auto-
Zero
INT2
D2
Pause
Reset
INT1
D1
Loop
Start
INT0
D0