CMPx_CR1 field descriptions (continued)
Field Description
0 Analog Comparator is disabled.
1 Analog Comparator is enabled.
35.2.3 CMP Filter Period Register (CMPx_FPR)
Address: Base address + 2h offset
Bit 7 6 5 4 3 2 1 0
Read
FILT_PER
Write
Reset
0 0 0 0 0 0 0 0
CMPx_FPR field descriptions
Field Description
FILT_PER Filter Sample Period
Specifies the sampling period, in bus clock cycles, of the comparator output filter, when CR1[SE]=0.
Setting FILT_PER to 0x0 disables the filter. Filter programming and latency details appear in the
Functional description.
This field has no effect when CR1[SE]=1. In that case, the external SAMPLE signal is used to determine
the sampling period.
35.2.4 CMP Status and Control Register (CMPx_SCR)
Address: Base address + 3h offset
Bit 7 6 5 4 3 2 1 0
Read 0
DMAEN
0
IER IEF
CFR CFF COUT
Write w1c w1c
Reset
0 0 0 0 0 0 0 0
CMPx_SCR field descriptions
Field Description
7
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
6
DMAEN
DMA Enable Control
Enables the DMA transfer triggered from the CMP module. When this field is set, a DMA request is
asserted when CFR or CFF is set.
0 DMA is disabled.
1 DMA is enabled.
Table continues on the next page...
Chapter 35 Comparator (CMP)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 825
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