NXP Semiconductors K22F series, Reference Manual, Page: 1033 / 1407

40.3.2 Timer Load Value Register (PIT_LDVALn)
These registers select the timeout period for the timer interrupts.
Access: User read/write
Address: 4003_7000h base + 100h (16d × i), where i=0d to 3d
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
TSV
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
PIT_LDVALn field descriptions
Field Description
TSV Timer Start Value
Sets the timer start value. The timer will count down until it reaches 0, then it will generate an interrupt and
load this register value again. Writing a new value to this register will not restart the timer; instead the
value will be loaded after the timer expires. To abort the current cycle and start a timer period with the new
value, the timer must be disabled and enabled again.
40.3.3 Current Timer Value Register (PIT_CVALn)
These registers indicate the current timer position.
Access: User read only
Address: 4003_7000h base + 104h (16d × i), where i=0d to 3d
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
TVL
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
PIT_CVALn field descriptions
Field Description
TVL Current Timer Value
Represents the current timer value, if the timer is enabled.
NOTE: • If the timer is disabled, do not use this field as its value is unreliable.
• The timer uses a downcounter. The timer values are frozen in Debug mode if MCR[FRZ] is
set.
Chapter 40 Periodic Interrupt Timer (PIT)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 1033