Datasheet

934
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
Figure 39-15. Comparison Waveform
39.6.4 PWM Event Lines
The PWM provides 2 independent event lines intended to trigger actions in other peripherals (in particular for ADC
(Analog-to-Digital Converter)).
A pulse (one cycle of the master clock (MCK)) is generated on an event line, when at least one of the selected
comparisons is matching. The comparisons can be selected or unselected independently by the CSEL bits in the “PWM
Event Line x Register” (PWM_ELMRx for the Event Line x).
Figure 39-16. Event Line Block Diagram
CCNT0
CVUPD 0x6 0x2
CVMVUPD
CV
0x6
0x2
0x6
0x6
CVM
Comparison Update
CMPU
CTRUPD 0x1 0x2
CPR 0x1 0x3
0x0 0x1 0x0 0x1 0x0 0x1 0x2 0x3 0x0 0x1 0x2 0x3
CPRCNT
0x0 0x1 0x2 0x3 0x0 0x1 0x2 0x0 0x1 0x2 0x0 0x1
CUPRCNT
CPRUPD 0x1 0x3
CUPRUPD 0x3 0x2
CTR 0x1 0x2
CUPR 0x3 0x2
Comparison Match
CMPM
PULSE
GENERATOR
Event Line x
CSEL0 (PWM_ELMRx)
CMPM0 (PWM_ISR2)
CSEL1 (PWM_ELMRx)
CMPM1 (PWM_ISR2)
CSEL2 (PWM_ELMRx)
CMPM2 (PWM_ISR2)
CSEL7 (PWM_ELMRx)
CMPM7 (PWM_ISR2)