Motor Control Pwm Signals And Leds; Pwm Group A Interface And Leds - Motorola 56F8346 User Manual

2.14 Motor Control PWM Signals and LEDs

The 56F8346 has two independent groups of dedicated PWM units. Each unit contains six
PWM and three Phase Current sense inputs. One PWM unit has four Fault input lines,
while the other has three Fault input lines. PWM group A's PWM lines are connected to a
set of six PWM LEDs via inverting buffers. The buffers are used to isolate and drive the
device's PWM group A's outputs to the PWM LEDs. The PWM LEDs indicate the status
of PWM group A signals; refer to
out to headers, J10 and J11 respectively, and to the peripheral daughter card connector for
easy use by the end user.
56F8346
PWMA0
PWMA1
PWMA2
PWMA3
PWMA4
PWMA5
Figure 2-12. PWM Group A Interface and LEDs
2-22
Freescale Semiconductor, Inc.
Figure 2-12. PWM Group A and B signals are routed
LED
Buffer
56F8346EVM User Manual
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+3.3V
LED7
Yellow LED
LED8
Green LED
LED9
Yellow LED
Green LED LED10
LED11
Yellow LED
LED12
Green LED
PWMA0
PWMA1
PWMA2
PWMA3
PWMA4
PWMA5
Phase A Top
Phase A Bottom
Phase B Top
Phase B Bottom
Phase C Top
Phase C Bottom
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