
25
57 NC -
58 TO O CTCSS/CDCSS signal output
59 POW-DET I Power switch detect input
60 EXT-MIC I External Mic detect pin
61 AVSS
GND input pin for A-D converter. Connect to
VSS.
62 VREF I Reference power supply input
63 BAT-DET I Battery voltage detect input
64 VOX-DET I VOX signal input