User guide
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V 1.0.1
2021-01-27
REF-AIRCON-C302A-IM564 user guide
Air conditioner application reference design kits
System design
3.6
Connector details
General information about the connectors of the REF-AIRCON-C302A-IM564 reference design is described in this
section.
Table 4 includes the details of the DC input connector.
Table 4
AC input connector (To IDU)
Function
J1 (ACL)
AC line input
J2 (ACN)
AC line input
J3 (PE)
Protective earth
J4 (COM)
Communicate wire to indoor unit
Table 5 denotes the details of the UART related connector (iMOTION
TM
Link connector J11 & J12)
Table 5
J11- iMOTION
TM
Link connector
Pin
Label
Function
1
SWDCLK
A core debug CLK
2
SWDDIO
A core debug IO
3 & 6
+5 V
On-board 5 V supply
4 & 5
GND
Ground
7
RXD0
MCEDesigner & firmware download (Same as J12 Pin2)
8
TXD0
MCEDesigner & firmware download (Same as J12 Pin3)
Table 6 provides the details of the motor UVW output connector
Table 6
Motor side connector
Label
Function
J7
U
Connected to motor phase U
J8
V
Connected to motor phase V
J9
W
Connected to motor phase W
Table 7 provides the pin assignments of air conditioner’s temperature-sensing interface connector J5
Table 7
J5 – Temperature-sensing connector to external NTC
Pin
Label
Function
1
Ambient
To ambient temperature sensing NTC
2, 4, 6
+5 V
On-board 5 V supply
3
Defrost
To defrost temperature sensing NTC