LM3S9D92 Datasheet, PDF (1142/1407 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Pulse Width Modulator (PWM)
■ 0 is the value zero
■ load is the internal signal that has a single-clock-cycle-width High pulse when the counter is
equal to the load value
■ zero is the internal signal that has a single-clock-cycle-width High pulse when the counter is zero
■ cmpA is the internal signal that has a single-clock-cycle-width High pulse when the counter is
equal to COMPA
■ cmpB is the internal signal that has a single-clock-cycle-width High pulse when the counter is
equal to COMPB
■ dir is the internal signal that indicates the count direction
Figure 21-3. PWM Count-Down Mode
LOAD
COMPA
COMPB
0
load
zero
cmpA
cmpB
dir
BDown
ADown
Figure 21-4. PWM Count-Up/Down Mode
LOAD
COMPA
COMPB
0
load
zero
cmpA
cmpB
dir
BUp
AUp
BDown
ADown
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January 22, 2012