Information

CMPx_SCR field descriptions
Field Description
7
Reserved
This read-only field is reserved and always has the value zero.
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.
5
Reserved
This read-only field is reserved and always has the value zero.
4
IER
Comparator Interrupt Enable Rising
Enables the CFR interrupt from the CMP. When this field is set, an interrupt will be asserted when CFR is
set.
0 Interrupt is disabled.
1 Interrupt is enabled.
3
IEF
Comparator Interrupt Enable Falling
Enables the CFF interrupt from the CMP. When this field is set, an interrupt will be asserted when CFF is
set.
0 Interrupt is disabled.
1 Interrupt is enabled.
2
CFR
Analog Comparator Flag Rising
Detects a rising-edge on COUT, when set, during normal operation. CFR is cleared by writing 1 to it.
During Stop modes, CFR is level sensitive .
0 Rising-edge on COUT has not been detected.
1 Rising-edge on COUT has occurred.
1
CFF
Analog Comparator Flag Falling
Detects a falling-edge on COUT, when set, during normal operation. CFF is cleared by writing 1 to it.
During Stop modes, CFF is level senstive .
0 Falling-edge on COUT has not been detected.
1 Falling-edge on COUT has occurred.
0
COUT
Analog Comparator Output
Returns the current value of the Analog Comparator output, when read. The field is reset to 0 and will
read as CR1[INV] when the Analog Comparator module is disabled, that is, when CR1[EN] = 0. Writes to
this field are ignored.
Memory map/register definitions
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
642 Freescale Semiconductor, Inc.