
MC97F6108A User’s manual
12. Analog comparator and OP-AMP
129
12.3
Register description
CA_REG1 (Comparator Amp Register 1) : 2F31H
7
6
5
4
3
2
1
0
-
-
-
-
OPAEN
AORA_EN AMP2EI_EN
OINPen
-
-
-
-
R/W
R/W
R/W
R/W
Initial value: 00H
OPAEN
Control OP-AMP
0
OP-AMP disable
1
OP-AMP enable
AORA_EN
Control AMP2 output voltage divider
0
Disable
1
enable
AMP2EI_EN
Control AMP1IB port
0
AMP2 external input from P17 port disable (AMP1O connected)
1
AMP2 external input from P17 port enable (AMP1O disconnected)
OINPen
Control AMP1I port
0
AMP1 input from AMP1I port disable
1
AMP1 input from AMP1I port enable
CA_REG2 (Comparator Amp Register 2) : 2F32H
7
6
5
4
3
2
1
0
AMP2O_EN
AMP1O_EN
AOSEL[5]
AOSEL[4]
AOSEL[3]
AOSEL[2]
AOSEL[1]
AOSEL[0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
AMP2O_EN
Control AMP2 output
0
AMP2 output disable
1
AMP2 output enable
AMP1O_EN
Control AMP1 output
0
AMP1 output disable
1
AMP2 output enable
AOSEL[5:0]
AMP2 output voltage divider selection
000000
AMP2STO x 6/69
000001
AMP2STO x 7/69
000010
AMP2STO x 8/69
000011
AMP2STO x 9/69
000100
AMP2STO x 10/69
~
~
111010
AMP2STO x 64/69
111011
AMP2STO x 65/69
111100
AMP2STO x 66/69
111101
AMP2STO x 67/69
111110
AMP2STO x 68/69
111111
AMP2STO x 69/69