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56F8323EVM User Manual
MOTOROLA
2.11 Motor Control PWM Signals and LEDs
The 56F8323 has one PWM unit. This unit contains six PWM output signals, three Fault
input signals and three Phase Current sense inputs. The PWM signals are connected to a
set of six PWM LEDs via inverting buffers. The buffers are used to isolate and drive the
processor’s PWM outputs to the PWM LEDs. The PWM LEDs indicate the status of
PWM signals; refer to
. Additionally, the PWM signals are routed out to a
header, J5, and to the peripheral daughter card connector, J1, for easy use by the end user.
Figure 2-9. PWM Interface and LEDs
LED
+3.3V
LED9
56F8323
LED10
LED11
LED12
LED7
LED8
PWMA0
PWMA1
PWMA2
PWMA3
PWMA5
Buffer
PWMA0
Yellow LED
PWMA1
PWMA2
PWMA3
PWMA4
PWMA5
Green LED
Yellow LED
Green LED
Yellow LED
Green LED
Phase A Top
Phase A Bottom
Phase B Top
Phase B Bottom
Phase C Top
Phase C Bottom
PWMA4
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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