NXP Semiconductors K32 L2A Series, Reference Manual, Page: 1172 / 1379

TPM counter
Zero
channel (n) output
with ELSnB:ELSnA = X:1
channel (n) output
with ELSnB:ELSnA = 1:0
100% duty cycle
0% duty cycle
MOD =
C(n+1)V =
C(n)V
Figure 46-21. Channel (n) output if (C(n)V = C(n+1)V = MOD)
46.4.9 Combine Input Capture mode
The Combine Input Capture mode is selected if COMBINEn= 1 and MSnB:MSnA = 00
and ELSnB:ELSnA != 00. This mode allows to measure a pulse width of the signal on
the input of channel (n) of a channel pair. The channel (n) filter can be active in this
mode.
channel (n) input
counter clock
synchronizer
Filter
Combine input
capture logic
is filter
enabled?
TPM counter
channel (n)
interrupt
channel (n+1)
interrupt
C(n+1)V
C(n)V
CH(n+1)IE
CH(n+1)F
CH(n)IE
CH(n)F
ELS(n)B:ELS(n)A
ELS(n+1)B:ELS(n+1)A
CLK CLK
D Q D Q
0
1
COMBINE(n)
Figure 46-22. Combine Input Capture mode block diagram
The ELS(n)B:ELS(n)A bits select the edge that is captured by channel (n), and ELS(n
+1)B:ELS(n+1)A bits select the edge that is captured by channel (n+1).
In the Combine Input Capture mode, only channel (n) input is used and channel (n+1)
input is ignored, when COMSWAPn=1 then only channel (n+1) input is used and
channel (n) input is ignored.
Functional description
K32 L2A Reference Manual, Rev. 2, 01/2020
1172 NXP Semiconductors