CMPx_CR0 field descriptions (continued)
Field Description
Represents the number of consecutive samples that must agree prior to the comparator ouput filter
accepting a new output state. For information regarding filter programming and latency, see the Functional
description.
000 Filter is disabled. If SE = 1, then COUT is a logic 0. This is not a legal state, and is not
recommended. If SE = 0, COUT = COUTA.
001 One sample must agree. The comparator output is simply sampled.
010 2 consecutive samples must agree.
011 3 consecutive samples must agree.
100 4 consecutive samples must agree.
101 5 consecutive samples must agree.
110 6 consecutive samples must agree.
111 7 consecutive samples must agree.
3
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
2
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
HYSTCTR Comparator hard block hysteresis control
Defines the programmable hysteresis level. The hysteresis values associated with each level are device-
specific. See the Data Sheet of the device for the exact values.
00 Level 0
01 Level 1
10 Level 2
11 Level 3
35.2.2 CMP Control Register 1 (CMPx_CR1)
Address: Base address + 1h offset
Bit 7 6 5 4 3 2 1 0
Read
SE WE TRIGM PMODE INV COS OPE EN
Write
Reset
0 0 0 0 0 0 0 0
CMPx_CR1 field descriptions
Field Description
7
SE
Sample Enable
At any given time, either SE or WE can be set. If a write to this register attempts to set both, then SE is set
and WE is cleared. However, avoid writing 1s to both field locations because this "11" case is reserved
and may change in future implementations.
0 Sampling mode is not selected.
1 Sampling mode is selected.
6
WE
Windowing Enable
Table continues on the next page...
Chapter 35 Comparator (CMP)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 823
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