Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
937
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
Figure 39-5.
Waveform Properties
39.6.2.3 2-bit Gray Up/Down Counter for Stepper Motor
It is possible to configure a couple of channels to provide a 2-bit gray count waveform on two outputs. Dead-Time
Generator and other downstream logic can be configured on these channels.
Up or down count mode can be configured on-the-fly by means of PWM_SMMR configuration registers.
When GCEN0 is set to ‘1’, channels 0 and 1 outputs are driven with gray counter.
Up or down count mode can be configured on-the-fly by means of PWM_SMMR configuration registers.
When GCEN0 is set to ‘1’, channels 0 and 1 outputs are driven with gray counter.
Channel x
slected clock
CHIDx(PWM_SR)
Center Aligned
CPRD(PWM_CPRDx)
CDTY(PWM_CDTYx)
PWM_CCNTx
Output Waveform OCx
CPOL(PWM_CMRx) = 0
Output Waveform OCx
CPOL(PWM_CMRx) = 1
Counter Event
CHIDx(PWM_ISR)
CES(PWM_CMRx) = 0
Left Aligned
CPRD(PWM_CPRDx)
CDTY(PWM_CDTYx)
PWM_CCNTx
Output Waveform OCx
CPOL(PWM_CMRx) = 0
Output Waveform OCx
CPOL(PWM_CMRx) = 1
CALG(PWM_CMRx) = 0
CALG(PWM_CMRx) = 1
Period
Period
CHIDx(PWM_ENA)
CHIDx(PWM_DIS)
Counter Event
CHIDx(PWM_ISR)
CES(PWM_CMRx) = 1
Counter Event
CHIDx(PWM_ISR)