NXP Semiconductors MKW01Z128, Reference Manual

Page: 622 / 884

CMPx_MUXCR field descriptions (continued)
Field Description
This bit is used to enable to MUX pass through mode. Pass through mode is always available but for
some devices this feature must be always disabled due to the lack of package pins.
0 Pass Through Mode is disabled.
1 Pass Through Mode is enabled.
6
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
5–3
PSEL
Plus Input Mux Control
Determines which input is selected for the plus input of the comparator. For INx inputs, see CMP, DAC,
and ANMUX block diagrams.
NOTE: When an inappropriate operation selects the same input for both muxes, the comparator
automatically shuts down to prevent itself from becoming a noise generator.
000 IN0
001 IN1
010 IN2
011 IN3
100 IN4
101 IN5
110 IN6
111 IN7
MSEL Minus Input Mux Control
Determines which input is selected for the minus input of the comparator. For INx inputs, see CMP, DAC,
and ANMUX block diagrams.
NOTE: When an inappropriate operation selects the same input for both muxes, the comparator
automatically shuts down to prevent itself from becoming a noise generator.
000 IN0
001 IN1
010 IN2
011 IN3
100 IN4
101 IN5
110 IN6
111 IN7
25.3 Functional description
The CMP module can be used to compare two analog input voltages applied to INP and
INM.
CMPO is high when the non-inverting input is greater than the inverting input, and is low
when the non-inverting input is less than the inverting input. This signal can be
selectively inverted by setting CR1[INV] = 1.
Chapter 25 Comparator (CMP)
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
Freescale Semiconductor, Inc. 491