13
KX-TG4221N/KX-TG4222N/KX-TG4223N/KX-TG313SK/KX-TG4224N/KX-TG4225N/KX-TGA421N
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
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_54 pin)
BBIC chip initialize
(CKM/STM)
Содержание KX-TG4221N
Страница 65: ...65 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...
Страница 68: ...68 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...
Страница 72: ...72 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...