38.4.16.2 Manual fault clearing
If the manual fault clearing is selected (FAULTM[1:0] = 0:1 or 1:0), then the channels
output disabled by fault control is again enabled when the FAULTF bit is cleared and a
new PWM cycle begins. See the following figure.
FTM counter
channel (n) output
(before fault control)
FAULTIN bit
channel (n) output
the beginning of new PWM cycles
FAULTF bit
FAULTF bit is cleared
The channel (n) output is after the fault control with manual fault clearing and POLn = 0.
NOTE
Figure 38-237. Fault control with manual fault clearing
38.4.16.3 Fault inputs polarity control
The FLTjPOL bit selects the fault input j polarity, where j = 0, 1, 2, 3:
• If FLTjPOL = 0, the fault j input polarity is high, so the logical one at the fault input j
indicates a fault.
• If FLTjPOL = 1, the fault j input polarity is low, so the logical zero at the fault input j
indicates a fault.
38.4.17 Polarity control
The POLn bit selects the channel (n) output polarity:
Chapter 38 FlexTimer Module (FTM)
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
Freescale Semiconductor, Inc.
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