DSP56F803EVM Freescale Semiconductor, DSP56F803EVM Datasheet - Page 30

• Manufacturer Part Number: DSP56F803EVM
• Description: KIT EVALUATION FOR DSP56F803
• Manufacturer: Freescale Semiconductor

Specifications of DSP56F803EVM

• Processor To Be Evaluated: 56F803
• Data Bus Width: 16 bit
• Interface Type: RS-232, JTAG
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.13 Motor Control PWM Signals and LEDs
The 56F803 has a dedicated PWM unit. The unit contains six PWM, three Phase Current sense
and four Fault input lines. The PWM lines are connected to the UNI-3 interface connector and to
a set of six PWM LEDs via inverting buffers. The buffers are used to isolate and drive the
controller’s PWM outputs to the PWM LEDs. The PWM LEDs indicate the status of PWM group
signals, refer to
for use by the end user.
2.14 Motor Protection Logic
The 56F803EVM contains a UNI-3 connector that interfaces with various motor drive boards.
The controller can sense error conditions generated by the motor power stage boards via signals
on the UNI-3 connector. The motor driver board’s Motor Supply DC Bus Voltage, Current and
Motor Phase Currents are sensed on the power stage board. The conditioned signals are
transferred to the device board via the UNI-3 connector. These analog input signals are compared
to limits set by trimpots. If the input analog signals are greater than the limit set by the trimpot, a
digital-compatible, +3.3V DC, fault signal is generated.
2-14
56F803
PWMA0
PWMA1
PWMA2
PWMA3
PWMA4
PWMA5
Figure
2-12. The PWM group signals are routed out to headers and are available
Figure 2-10. PWM Group Interface and LEDs
DSP56F803EVM User Manual, Rev. 5
BUFFER
YELLOW LED
YELLOW LED
YELLOW LED
GREEN LED
GREEN LED
GREEN LED
UNI-3
PWMA0
PWMA1
PWMA2
PWMA3
PWMA4
PWMA5
LED 2
LED 3
LED 4
LED 5
LED 6
LED 7
Freescale Semiconductor
+3.3V
PWM_BB / 3
PWM_CT / 4
PWM_CB / 5
PWM_AB / 1
PWM_BT / 2
PWM_AT / 0