Table of Contents
Advertisement
2.9 UNI-3 Interface
Motor control signals from a family of motor driver boards can be connected to the EVM
board via the UNI-3 connector/interface. The UNI-3 connector/interface contains all of
the signals needed to drive and control the motor drive boards. These signals are
connected to various groups of the DSP's input and output ports; A/D, TIMER and PWM.
The header, JG4, is used to select between the Back-EMF and Motor Phase Current
signals. Refer to
Table 2-5
for the pin out of the UNI-3 connector, P3.
Table 2-5. UNI-3 Connector Description
Pin #
Signal
1
PWM_AT
3
PWM_AB
5
PWM_BT
7
PWM_BB
9
PWM_CT
11
PWM_CB
13
GND
15
+5.0V DC
17
Analog GND
19
Analog +15V DC
21
Motor DC Bus
Voltage Sense
23
Motor Phase A
Current Sense
25
Motor Phase C
Current Sense
27
NC
29
Motor Drive Brake
Control
31
PFC PWM
33
PFC Zero Cross
35
Zero Cross B
Technical Summary
P3
Pin #
Signal
2
Shield
4
Shield
6
Shield
8
Shield
10
Shield
12
GND
14
+5.0V DC
16
Analog +3.3V DC
18
Analog GND
20
Analog -15V DC
22
Motor DC Bus
Current Sense
24
Motor Phase B
Current Sense
26
Motor Drive
Temperature
Sense
28
Shield
30
Serial COM
32
PFC Inhibit
34
Zero Cross A
36
Zero Cross C
UNI-3 Interface
2-11
Advertisement
Table of Contents
