NXP Semiconductors K32 L2A Series, Reference Manual, Page: 757 / 1379

LPITx_TCTRLn field descriptions
Field Description
31–28
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
27–24
TRG_SEL
Trigger Select
Selects the trigger to use for starting and/or reloading the LPIT timer. This field should only be changed
when the LPIT timer channel is disabled. The TRG_SRC bit selects between internal and external trigger
signals for each channel.
The TRG_SEL bits select one trigger from the set of internal or external triggers selected by TRG_SRC.
0 Timer channel 0 trigger source is selected
1 Timer channel 1 trigger source is selected
2 Timer channel 2 trigger source is selected
. . . . . .
n Timer channel 'n' trigger source is selected
23
TRG_SRC
Trigger Source
Selects between internal or external trigger sources. The final trigger is selected by TRG_SEL depending
on which trigger source out of internal triggers or external triggers are selected by TRG_SRC.
Refer to the chip configuration section for available external trigger options. If a channel does not have an
associated external trigger then this bit for that channel should be set to 1.
0 Trigger source selected in external
1 Trigger source selected is the internal trigger
22–19
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
18
TROT
Timer Reload On Trigger
When set, the LPIT timer will reload when a rising edge is detected on the selected trigger input. The
trigger input is ignored if the LPIT is disabled during debug mode or DOZE mode (DOZE_EN or DBGEN =
0)
0 Timer will not reload on selected trigger
1 Timer will reload on selected trigger
17
TSOI
Timer Stop On Interrupt
This bit controls whether the channel timer will stop after it times out and when it can restart (when TSOT
= 0). If TSOT = 1, then the timer will stop on timeout and will restart after a rising edge on the selected
trigger is detected. If TSOT = 0, then this bit controls when the timer restarts.
0 Timer does not stop after timeout
1 Timer will stop after timeout and will restart after rising edge on the T_EN bit is detected (i.e. timer
channel is disabled and then enabled)
16
TSOT
Timer Start On Trigger
This bit controls when the timer starts decrementing.
0 Timer starts to decrement immediately based on restart condition (controlled by TSOI bit)
1 Timer starts to decrement when rising edge on selected trigger is detected
15–4
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
Table continues on the next page...
Chapter 28 Low Power Interrupt Timer (LPIT)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 757