2-41 
 
Definition of infrared communication board J2 
Pin No.  Signal Name Description 
1)   
VPP  12V power supply 
2)   
VPP  12V power supply 
3)   
GND Ground 
4)   
GND Ground 
5)   
VDD 3.3V power supply 
6)   
VCC 
5V power supply(IO pull power 
supply) 
7)   
GND Ground 
8)   
GND Ground 
Definition of infrared communication board J4 
Pin No.  Signal Name Description 
1)   
INTERFACE_TX0  Sent signal of infrared communication board 
2)   
INTERFACE_RX0  Received signal of infrared communication board 
3)   
GND Ground 
 
 
2.1.9 Others 
 
2.1.9.1 Top Light Board 
Top light board supports two levels of top lighting: high light and low light. And it also transfers 
the signal of speaker. 
 
 
 
 
Definition of top light board J1 (port connect with the mother board) 
Pin No.  Signal Name  Discription 
1)  
VPP  12V power supply signal 
2)  
GND Ground 
3)  
Lighting  Brightness level control signal 
4)  
Speaker+  Anode of speaker 
5)  
Speaker- Cathode of speaker