Information

37.4.5 Output Compare Mode
The output compare mode is selected when (DECAPEN = 0), (COMBINE = 0),
(CPWMS = 0), and (MSnB:MSnA = 0:1).
In output compare mode, the FTM can generate timed pulses with programmable
position, polarity, duration, and frequency. When the counter matches the value in the
CnV register of an output compare channel, the channel (n) output can be set, cleared, or
toggled.
When a channel is initially configured to toggle mode, the previous value of the channel
output is held until the first output compare event occurs.
The CHnF bit is set and the channel (n) interrupt is generated (if CHnIE = 1) at the
channel (n) match (FTM counter = CnV).
TOF bit
...
...
0
1 1 1
2
2
3 3
4 45 5
0 0
previous value
previous value
channel (n) output
counter
overflow
counter
overflow
counter
overflow
channel (n)
match
channel (n)
match
CNT
MOD = 0x0005
CnV = 0x0003
CHnF bit
Figure 37-178. Example of the Output Compare Mode when the Match Toggles the
Channel Output
TOF bit
...
...
0
1 1 1
2
2
3 3
4 45 5
0 0
previous value
previous value
channel (n) output
counter
overflow
counter
overflow
counter
overflow
channel (n)
match
channel (n)
match
CNT
MOD = 0x0005
CnV = 0x0003
CHnF bit
Figure 37-179. Example of the Output Compare Mode when the Match Clears the
Channel Output
Functional Description
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
944 Freescale Semiconductor, Inc.