HYT TC-610P Service Manual page 19

1.VOX
2.BUSY_DET
3.BEEF/CALL
4.T/R
5.SAVE
6.DC/CTC
7.W/N
8.UART
9.BAT_BAT
10.PLL_LD
PTT2
MON2
BAT
/LIGHTING
The MCU control circuit is mainly composed of MCU, EEPROM, restart IC, keys, knobs, etc. Main
functions realized through this circuit are:
1） Signal Control:
To control Battery Save Mode;
To control high/low power switch;
To control wide/narrow band switch;
To control Tx/Rx switch;
To control APC/TUNE output voltage;
To control power supply of tranmitter and audio amplifier;
To control SQL open detection.
2） Signal Detect:
To detect startup of external PTT, MONI and VOX;
To detect PLL Unlock;
CHANNEL SW
U605
MB95F108AK
WPFV-GE1
7.3728M cry stal oscillator
X601
Figure 8
17
TC-610P Service Manual
U609
AT 24C 64
APC/TUNE
PLL
U610
Reset
IC