Sfr Definition 7.5. Cpt1Mx: Comparator1 Mux Selection - Silicon Laboratories C8051F341 Product Manual

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D

SFR Definition 7.5. CPT1MX: Comparator1 MUX Selection

R/W R/W
- CMX1N2 CMX1N1 CMX1N0
Bit7 Bit6
Bit7: UNUSED. Read = 0b, Write = don't care.
Bits6–4: CMX1N2–CMX1N0: Comparator1 Negative Input MUX Select.
These bits select which Port pin is used as the Comparator1 negative input.
CMX1N2 CMX1N1 CMX1N0
0
0
0
0
1
Bit3: UNUSED. Read = 0b, Write = don't care.
Bits2–0: CMX1P1–CMX1P0: Comparator1 Positive Input MUX Select.
These bits select which Port pin is used as the Comparator1 positive input.
CMX1P2 CMX1P1 CMX1P0
0
0
0
0
1
Note that the port pins used by the comparator depend on the package type (32-pin or 48-pin).
66
R/W R/W R/W
-
Bit5 Bit4 Bit3
Negative Input
(32-pin Package)
0 0
0 1
1 0
1 1
0 0
Positive Input
(32-pin Package)
0 0
0 1
1 0
1 1
0 0
Rev. 1.3
R/W R/W
CMX1P2 CMX1P1 CMX1P0 00000000
Bit2 Bit1
Negative Input
(48-pin Package)
P1.3 P2.3
P1.7 P3.1
P2.3 P4.0
P2.7 P4.6
P0.5 P1.2
Positive Input
(48-pin Package)
P1.2 P2.2
P1.6 P3.0
P2.2 P3.7
P2.6 P4.5
P0.4 P1.1
R/W Reset Value
Bit0 SFR Address:
0x9E