12
KX-TG4771B/KX-TG4772B/KX-TG4773B/KX-TGA470B
4.4.4.
Power Supply Circuit/Reset Circuit
The power supply voltage from AC adaptor is converted to VBAT (3.0 V) 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
IC904
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
LCD BLT
SHIFT
REGISTER
R933, Q911,Q906
ANS LED
MSG LED
SP LED
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_54 pin)
BBIC chip initialize
(CKM/STM)
Содержание KX-TG4771B
Страница 65: ...65 KX TG4771B KX TG4772B KX TG4773B KX TGA470B Memo ...
Страница 72: ...72 KX TG4771B KX TG4772B KX TG4773B KX TGA470B 14 6 Portable LED LED KX TGA470 SCHEMATIC DIAGRAM Handset LED ...
Страница 74: ...74 KX TG4771B KX TG4772B KX TG4773B KX TGA470B Memo ...
Страница 80: ...80 KX TG4771B KX TG4772B KX TG4773B KX TGA470B Memo ...