LM4F111C4QR Datasheet, PDF (664/1113 Pages) Texas Instruments – Microcontroller

General-Purpose Timers
Bit/Field
10
9
8
7
Name
TBMRSU
TBPWMIE
TBILD
TBSNAPS
Type
R/W
R/W
R/W
R/W
Reset
0
0
0
0
Description
GPTM Timer B Match Register Update
Value Description
0 Update the GPTMTBMATCHR register and the GPTMTBPR
register, if used, on the next cycle.
1 Update the GPTMTBMATCHR register and the GPTMTBPR
register, if used, on the next timeout.
If the timer is disabled (TBEN is clear) when this bit is set,
GPTMTBMATCHR and GPTMTBPR are updated when the timer is
enabled. If the timer is stalled (TBSTALL is set), GPTMTBMATCHR and
GPTMTBPR are updated according to the configuration of this bit.
GPTM Timer B PWM Interrupt Enable
This bit enables interrupts in PWM mode on rising, falling, or both edges
of the CCP output as defined by the TBEVENT field in the GPTMCTL
register.
Value Description
0 Interrupt is disabled.
1 Interrupt is enabled.
This bit is only valid in PWM mode.
GPTM Timer B Interval Load Write
Value Description
0 Update the GPTMTBR and GPTMTBV registers with the value
in the GPTMTBILR register on the next cycle. Also update the
GPTMTBPS and GPTMTBPV registers with the value in the
GPTMTBPR register on the next cycle.
1 Update the GPTMTBR and GPTMTBV registers with the value
in the GPTMTBILR register on the next timeout. Also update
the GPTMTBPS and GPTMTBPV registers with the value in
the GPTMTBPR register on the next timeout.
Note the state of this bit has no effect when counting up.
The bit descriptions above apply if the timer is enabled and running. If
the timer is disabled (TBEN is clear) when this bit is set, GPTMTBR,
GPTMTBV, GPTMTBPS, and GPTMTBPV are updated when the timer
is enabled. If the timer is stalled (TBSTALL is set), GPTMTBR and
GPTMTBPS are updated according to the configuration of this bit.
GPTM Timer B Snap-Shot Mode
Value Description
0 Snap-shot mode is disabled.
1 If Timer B is configured in the periodic mode, the actual
free-running value of Timer B is loaded at the time-out event
into the GPTM Timer B (GPTMTBR) register. If the timer
prescaler is used, the prescaler snapshot is loaded into the
GPTM Timer B (GPTMTBPR).
664
April 25, 2012
Texas Instruments-Advance Information