1-26 (No.RA024)5.4 TERMINAL FUNCTION5.4.1 TX-RX unit (X57-8510-XX)5.4.2 SP/MIC Connector SpecificationPin No. Name I/O FunctionCN6001 VOLOUT O Volume output to audio amplifier2 VOLIN I Volume level input for audio control3 SB I Power input after power switch4 SB I Connect to pin 35 B O Power output after passing through the fuse6 B O Connect to pin 57 VOLGND - GND for volume level8 EN2 I Rotary switch input9 EN4 I Rotary switch input10 GND - GND11 EN3 I Rotary switch input12 EN1 I Rotary switch inputPin No. Name I/O Signal Type Function1 PTT/RXD I Digital PTT/RXD input2 MICIN I Analog External MIC input3 MICO O Analog Internal MIC output4 OPTDET I Digital External option detection5 50V O Power DC 5V output6 AE - GND GND7 TXD O Digital TXD output8 NC - - No connection9 NC - - No connection10 SPO O Analog Internal audio output
