Pwm Control Register (Pwmctlx - Analog Devices SHARC ADSP-21368 Hardware Reference Manual

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Pulse Width Modulation Registers

PWM Control Register (PWMCTLx)

These registers, described in
modes of each PWM block. These registers also allow programs to disable
interrupts from individual groups. These registers addresses are:
PWMCTL0 — 0x3000
PWMCTL1 — 0x3010
PWMCTL2 — 0x3400
PWMCTL3 — 0x3410
Table A-26. PWMCTLx Register Bit Descriptions
Bit
Name
0
PWM_ALIGN
1
PWM_PAIR
2
PWM_UPDATE
5
PWM_IRQEN
A-80
Table
A-26, are used to set the operating
Function
Align Mode.
0 = Edge-aligned. The PWM waveform is left-justified in the
period window.
1 = Center-aligned. The PWM waveform is symmetrical.
Pair Mode.
0 = Non-paired mode. The PWM generates independent signals
1 = Paired mode. The PWM generates complementary signals on
two outputs.
Update Mode.
0 = Single-update mode. The duty cycle values are programma-
ble only once per PWM period. The resulting PWM patterns are
symmetrical about the midpoint of the PWM period.
1 = Double-update mode. A second update of the PWM registers
is implemented at the midpoint of the PWM period.
Enable PWM Interrupts. Enables interrupts.
0 = Interrupts not enabled
1 = Interrupts enabled
ADSP-21368 SHARC Processor Hardware Reference

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