Fault Inputs Polarity Control; Polarity Control - NXP Semiconductors freescale KV4 Series Reference Manual

39.5.16.2 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
FAULTF bit
NOTE
The channel (n) output is after the fault control with manual fault clearing and POLn = 0.
Figure 39-238. Fault control with manual fault clearing

39.5.16.3 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.

39.5.17 Polarity control

The POLn bit selects the channel (n) output polarity:
Freescale Semiconductor, Inc.
the beginning of new PWM cycles
KV4x Reference Manual, Rev. 2, 02/2015
Preliminary
Chapter 39 FlexTimer Module (FTM)
FAULTF bit is cleared
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