Information

IRQ
INTERNAL BUS
INP
INM
FILTER_CNT
INV
COUT
COUT
OPE
SE
CMPO to
PAD
(TO OTHER SOC FUNCTIONS))
COUTA
1
WE
0
SE=0
CGMUX
COS
FILT_PER
0
0
+
-
FILT_PER
COS
0x01
IER/F CFR/F
WINDOW/SAMPLE
1
0
EN,PMODE,HYSTCTR[1:0]
Interrupt
Control
Filter
Block
Window
Control
Polarity
Select
Clock
Prescaler
divided bus clock
CMPO
bus clock
Figure 33-29. Sampled, Non-Filtered (# 3B): Sampling interval internally derived
33.8.1.4 Sampled, Filtered Mode (#s 4A & 4B)
In Sampled, Filtered mode, the analog comparator block is powered and active. The path
from analog inputs to COUTA is combinational (unclocked). Windowing Control is
completely bypassed. COUTA is sampled whenever a rising edge is detected on the Filter
Block clock input.
The only difference in operation between Sampled, Non-Filtered (# 3A) and Sampled,
Filtered (# 4A) is that CR0[FILTER_CNT] is now greater than 1, which activates filter
operation.
CMP Functional Description
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
820 Freescale Semiconductor, Inc.