NXP Semiconductors MWCT101 S Series, Reference Manual

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Field Function
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27-24
TRG_SEL
Trigger Select
Selects the trigger to use for starting and/or reloading the LPIT timer.
• The TRG_SEL field selects one trigger from the set of internal or external triggers that are selected
by the Trigger Source bit (TRG_SRC)
• Recall that the TRG_SRC bit selects between internal and external trigger signals for each channel
NOTE: The Trigger Select field should only be changed when the LPIT timer channel is disabled.
0000-0011b - Timer channel 0 - 3 trigger source is selected
0100-1111b - Reserved
23
TRG_SRC
Trigger Source
Selects between internal or external trigger sources. The trigger to be used is selected using the
TRG_SRC and TRG_SEL bits.
Refer to the chip configuration section for available external trigger options. If a channel does not have an
associated external trigger, then set the Trigger Source bit (TRG_SRC) = 1.
0b - Selects external triggers
1b - Selects internal triggers
22-19
—
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 (DBGEN = 0) or DOZE mode
(DOZE_EN = 0)
0b - Timer will not reload on the selected trigger
1b - Timer will reload on the selected trigger
17
TSOI
Timer Stop On Interrupt
Controls whether the channel timer will stop after it (the channel timer) times out or not.
0b - The channel timer does not stop after timeout
1b - The channel timer will stop after a timeout, and the channel timer will restart based on Timer
Start On Trigger bit (TSOT). When TSOT = 0, the channel timer will restart after a rising edge on
the Timer Enable bit (T_EN) is detected (which means that the timer channel is disabled and then
enabled). When TSOT = 1, the channel timer will restart after a rising edge on the selected trigger
is detected.
16
TSOT
Timer Start On Trigger
Controls when the timer starts decrementing.
0b - Timer starts to decrement immediately based on the restart condition (controlled by the Timer
Stop On Interrupt bit (TSOI))
1b - Timer starts to decrement when a rising edge on a selected trigger is detected
15-4
—
This read-only field is reserved and always has the value 0
3-2
MODE
Timer Operation Mode
Configures the channel timer's mode of operation. The MODE bits control how the timer decrements.
00b - 32-bit Periodic Counter
01b - Dual 16-bit Periodic Counter
10b - 32-bit Trigger Accumulator
11b - 32-bit Trigger Input Capture
1
CHAIN
Chain Channel
Table continues on the next page...
Memory Map and Registers
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
1316 NXP Semiconductors