Registers Format
•
29
Base + 15
Not Used
Not Used
Table 4.1 I/O Address
4.2 A/D Data Registers
The ACL-8112 series are 12-bit resolution for analog input channels, the
digital data will store in the A/D data registers. The A/D data is put into
two 8 bits registers. The low byte data (8 LSBs) are put in address
BASE+4 and the high byte data (4 MSBs) are put in address BASE+5. A
DRDY bit is used to indicate the status of A/D conversion. DRDY goes to
low level means A/D conversion is completed.
Address : BASE + 4 and BASE + 5
Attribute: read only
Data Format:
Bit
7
6
5
4
3
2
1
0
BASE+4
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
BASE+5
0
0
0
DRDY AD11 AD10
AD9
AD8
AD11 …. AD0: Analog to digital data. AD11 is the Most Significant Bit
(MSB). AD0 is the Least Significant Bit(LSB).
DRDY: Data Ready Signal.
1: A/D data is not ready
0: A/D conversion is completed.
It will be set to 1, when reading the low byte.
4.3 A/D Channel Multiplexer Register
This register is used to control the A/D channels to be converted. It's a
write only register. When the channel number is written to the register, the
multiplexer s witches to the new channel and await for conversion.
Address : BASE + 10
Attribute: write only
Data Format:
Bit
7
6
5
4
3
2
1
0
BASE+10
X
X
CS1 CS0
CL3
CL2
CL1
CL0
CLn: multiplexer channel number (n=0~3).
Summary of Contents for ACL-8112 Series
Page 1: ...NuDAQ ACL 8112 Series Enhanced Multi Functions Data Acquisition Cards User s Guide ...
Page 4: ......
Page 40: ...32 Registers Format 1 1 1 1 1 000 Unipolar N A Table 4 2 1 Function of the Gain Control Bits ...
Page 44: ...36 Registers Format Base 14 DO15 DO14 DO13 DO12 DO11 DO10 DO9 DO8 ...
Page 46: ...38 Registers Format Base 2 Counter 2 Register R W Base 3 8254 CONTROL BYTE ...
Page 71: ...C Language Library 63 ...
Page 81: ...C Language Library 73 Example See Demo Program AD_Demo4 C ...
Page 85: ...C Language Library 77 ERR_AD_INTNotSet Example See demo program AD_Demo2 C ...
