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12
KX-TG234SK/KX-TGA470B
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
LCD BLT
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-TG234SK
Страница 49: ...49 KX TG234SK KX TGA470B Attach the LCD and fix by hook A two points A...
Страница 66: ...66 KX TG234SK KX TGA470B Memo...
Страница 71: ...71 KX TG234SK KX TGA470B Memo...
Страница 74: ...74 KX TG234SK KX TGA470B 14 5 Schematic Diagram Handset_LED LED KX TGA470 SCHEMATIC DIAGRAM Handset_LED...
Страница 76: ...76 KX TG234SK KX TGA470B Memo...
Страница 80: ...80 KX TG234SK KX TGA470B Memo...
Страница 88: ...88 KX TG234SK KX TGA470B 16 4 Accessories A1 A2 A3 A4 A5...