Motor Control Pwm Signals And Leds; Pwm Interface And Leds - Motorola DSP56F801 Hardware User Manual

2.11 Motor Control PWM Signals and LEDs

The DSP56F801 has one dedicated PWM unit. The PWM unit's lines are connected to the
UNI-3 interface connector and to a set of six PWM LEDs via inverting buffers. The
inverting buffers are used to isolate and drive the DSP's PWM's outputs to the PWM
LEDs. The PWM LEDs indicate the status of PWM's signals, as shown in
The PWM signals are routed to a header, J1, and are available for use by the end user.
DSP56F801
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
2-14
LED
BUFFER
Figure 2-9. PWM Interface and LEDs
DSP56F801EVM Hardware User's Manual
+3.3V
LED1
YELLOW LED
PHASE A TOP
LED2
GREEN LED
PHASE A BOTTOM
LED3
YELLOW LED
PHASE B TOP
LED4
GREEN LED
PHASE B BOTTOM
LED5
YELLOW LED
PHASE C TOP
LED6
GREEN LED
PHASE C BOTTOM
Figure 2-9.
UNI-3
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5