12
KX-TGC220/KX-TGC222/KX-TGC223/KX-TGCA20
4.4.4.
Power Supply Circuit/Reset Circuit
The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is
insulated from VBAT by Doubler of BBIC.
Circuit Operation:
5.5V
VBAT
RSTN(Reset)
pin 54
VBAT
pin 10
pin 57
pin 9
pin 15
IC501
IC302
IC601
BBIC
DOUBLER OUT
For peripherals
VDDC (1.2V)
AC Adaptor
3.0V
REGULATOR
FLASH
IC611
EEPROM
+3.0V
STM/CKM
Receive
Amp.
RF Part
ANS LED
MSG LED
St
a
rtmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Re
s
et (RSTN)
(IC501_54 pin)
BBIC chip initi
a
lize
(CKM/STM)
Содержание KX-TGC220AL
Страница 10: ...10 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 4 3 Block Diagram Base Unit_RF Part RXp RXn ANT1 TXp TXn ...
Страница 64: ...64 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 69: ...69 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 72: ...72 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...
Страница 76: ...76 KX TGC220 KX TGC222 KX TGC223 KX TGCA20 Memo ...