DB9 Female to 3.5mm TRRS Serial Cable 6FT LG EAD-62707901

LG TV Programming Cable 6FTt DB9-Female to 3.5mm TRRS Connector Male

Serial Transfer Communication Devices to Program LG TVs
TRRS 3.5 mm Jack.
DB9-F Serial Port.


Wiring Schematic

DB9-F         TRRS Connector 3.5mm           Signal 
Pin 1   
Pin 2         Ring Pin-3                    Transmit Data
Pin 3         Tip Pin-1                     Receive Data 
Pin 4         Ring Pin-2
Pin 5         Sleeve Pin-4                  Ground 
Pin 6
Pin 7
Pin 8
Pin 9
Shell                                      Foil Shield        

Layout of TRRS.
SLEEVE(GROUND),RING,RING,TIP