Texas Instruments MSP430x4xx - Manual (Page 319)

OA Registers
16-12 OA
OAxCTL0, Opamp Control Register 0
7 6 5 4 3 2 1 0
OANx OAPx OAPMx OAADC1 OAADC0
rw−0 rw−0 rw−0 rw−0 rw−0 rw−0 rw−0 rw−0
OANx Bits
7-6 Inverting input select. These bits select the input signal for the OA inverting
input.
00
OAxI0
01 OAxI1
10 DAC0 internal
11 DAC1 internal
OAPx Bits
5-4 Non-inverting input select. These bits select the input signal for the OA
non-inverting input.
00
OAxI0
01 OA0I1
10 DAC0 internal
11 DAC1 internal
OAPMx Bits
3-2 Slew rate select These bits select the slew rate vs. current consumption for
the OA.
00
Off, output high Z
01 Slow
10 Medium
11 Fast
OAADC1 Bit 1 OA output select. This bit connects the OAx output to ADC12 input Ax and
output pin OAxO when OAFCx > 0.
0
OAx output not connected to A1 (OA0), A3 (OA1), or A5 (OA2)
1 OAx output connected to A1 (OA0), A3 (OA1), or A5 (OA2)
OAADC0 Bit 0 OA output select. This bit connects the OAx output to ADC12 input Ax
when OAPMx > 0.
0
OAx output not connected to A12 (OA0), A13 (OA1), or A14 (OA2)
1 OAx output connected to A12 (OA0), A13 (OA1), or A14 (OA2)