Datasheet

1029
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
Figure 41-4. Non Overlapped Center Aligned Waveforms
Note: 1. See Figure 41-5 on page 1030 for a detailed description of center aligned waveforms.
When center aligned, the internal channel counter increases up to CPRD and.decreases down to 0. This ends the
period.
When left aligned, the internal channel counter increases up to CPRD and is reset. This ends the period.
Thus, for the same CPRD value, the period for a center aligned channel is twice the period for a left aligned
channel.
Waveforms are fixed at 0 when:
 CDTY = CPRD and CPOL = 0
 CDTY = 0 and CPOL = 1
Waveforms are fixed at 1 (once the channel is enabled) when:
 CDTY = 0 and CPOL = 0
 CDTY = CPRD and CPOL = 1
The waveform polarity must be set before enabling the channel. This immediately affects the channel output level.
Changes on channel polarity are not taken into account while the channel is enabled.
PWM0
PWM1
Period
No overlap