User`s guide

Registers Format
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27
3.4 A/D Range Control Register
The A/D range register is used to adjust the analog input ranges for A/D
channels. Two factor will effect the input range: Gain and Bipolar/Unipolar.
Both of these issues can be controlled by this register. The Table 4.2 shows
the relationship between the register data and the A/D input range.
Address : BASE + 9
Attribute: write only
Data Format:
Bit 7 6 5 4 3 2 1 0
BASE+9 X X X X X X G1 G0
G1 G0 GAIN Mode Input Range
0 0 1 Bipolar
±10V
0 1 2 Bipolar
±5V
1 0 4 Bipolar
±2.5V
1 1 8 Bipolar
±1.25V