4. Using the I/O Address Map
ADI16-4(FIT)GY
21
Setting calibration data
Starting
I/O
address
D7
D6
D5
D4
D3
D2
D1
D0
Output
Command
+24
(18h)
0
0
0
0
1
0
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Output
Setting Data 0
+28
(1Ch)
0
0
0
0
0
0
0
Gain/
Offset
Potentionmeter Data
+29
(1Dh)
Calibration
Data7
Calibration
Data6
Calibration
Data5
Calibration
Data4
Calibration
Data3
Calibration
Data2
Calibration
Data1
Calibration
Data0
Figure 4.8. Setting calibration data
-
Gain/Offset [D0]:
Select the calibration data item to be output to the digital potentiometer. The data output to the
digital potentiometer is cleared the moment the power is turned off.
Gain/Offset
[0] : Gain
* Initialized state
[1] : Offset
Starting
I/O
address
D7
D6
D5
D4
D3
D2
D1
D0
Input
Analog Input Status 1
+23
(17h)
0
0
0
FIFO
Memory
Flag
Calibration
Busy
EEPROM
Busy
0
0
Figure 4.9. Analog Input Status
-
FIFO Memory Flag [D4]:
See the “FIFO Function Overview” section.
-
Calibration Busy [D3]:
The status is set upon data output to the digital potentiometer. The status is reset upon completion
of the write.