SN32F280 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 110
Version 1.1
9.3 OPA REGISTERS
Base Address: 0x4002 8000 (CMP)
9.3.1 OPA Control register (OPA_CTRL)
Address Offset: 0x00
Bit
Name
Description
Attribute
Reset
31:13
Reserved
R
0
12
OP1NS
OP-Amp 1 negative input selection bit
0: V
OPAIREF
. OP1N pin is GPIO mode.
1: OP1N. OP1N is OPA1 negative input pin, and isolate GPIO function.
R/W
0
11
OP1PS
OP-Amp 1 positive input selection bit
0: V
OPAIREF
. OP1P pin is GPIO mode.
1: OP1P. OP1P is OPA1 positive input pin, and isolate GPIO function.
R/W
0
10:9
Reserved
R
0
8
OP1EN
OP-Amp 1 enable bit.
0: Disable. OP1O/OP1P/OP1N pins are GPIO mode.
1: Enable. OP1O is OP-Amp 1 output pin.
R/W
0
7:5
Reserved
R
0
4
OP0NS
OP-Amp 0 negative input selection bit
0: V
OPAIREF
. OP0N pin is GPIO mode.
1: OP0N. OP0N is OPA0 negative input pin, and isolate GPIO function.
R/W
0
3
OP0PS
OP-Amp 0 positive input selection bit
0: V
OPAIREF
. OP0P is GPIO mode
1: OP0P. OP0P is OPA0 positive input pin, and isolate GPIO function.
R/W
0
2:1
Reserved
R
0
0
OP0EN
OP-Amp 0 enable bit.
0: Disable. OP0O/OP0P/OP0N pins are GPIO mode.
1: Enable. OP0O is OP-Amp 0 output pin.
R/W
0
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