Hytera TC-508 - Page 23

TC-508 Service Manual
22
91 SW_P0 Reserve O Reserved
92 SW_P1 TX_CTRL O Control power supply for TX (transmit at high
level)
93 RESET RESET I Reset input
94 Vssa GND S Ground power supply for analog circuit
95 Vdda
VCC（3.0V）
S Power supply for analog circuit
96 BG_REF O To output reference voltage
97 MIC_IN MIC_IN I Microphone input
98 DEMODE DEMODE I To input baseband signal (audio and
CTCSS/CDCSS)
99 MODOUT MODOUT O To output baseband signal (audio and
CTCSS/CDCSS)
100 NC / / /