Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
982
Figure 38-7. Complementary Output Waveforms
38.6.2.5 Output Override
The two complementary outputs DTOHx and DTOLx of the dead-time generator can be forced to a value defined
by the software.
Figure 38-8. Override Output Selection
The fields OSHx and OSLx in the “PWM Output Selection Register” (PWM_OS) allow the outputs of the dead-time
generator DTOHx and DTOLx to be overridden by the value defined in the fields OOVHx and OOVLx in the“PWM
Output Override Value Register” (PWM_OOV).
The set registers “PWM Output Selection Set Register” and “PWM Output Selection Set Update Register”
(PWM_OSS and PWM_OSSUPD) enable the override of the outputs of a channel regardless of other channels. In
the same way, the clear registers “PWM Output Selection Clear Register” and “PWM Output Selection Clear
Update Register” (PWM_OSC and PWM_OSCUPD) disable the override of the outputs of a channel regardless of
other channels.
DTHx DTLx
output waveform OCx
CPOLx = 0
output waveform DTOHx
DTHIx = 0
output waveform DTOLx
DTLIx = 0
output waveform DTOHx
DTHIx = 1
output waveform DTOLx
DTLIx = 1
DTHx DTLx
output waveform OCx
CPOLx = 1
output waveform DTOHx
DTHIx = 0
output waveform DTOLx
DTLIx = 0
output waveform DTOHx
DTHIx = 1
output waveform DTOLx
DTLIx = 1
DTOHx
OOVHx
OOOHx
OSHx
0
1
DTOLx
OOVLx
OOOLx
OSLx
0
1