Technical Descriptions; Circuit Configuration Of Tg773X Series Phones - Panasonic KX-TG7731S Service Manual

4 Technical Descriptions

4.1.

Circuit Configuration of TG773x Series Phones

TG773x consists of DECT cordless telephone and Bluetooth Module.
Both voices of transmission and reception are transferred by PCM.
BBIC on DECT side controls the cordless telephone system, which makes control data communication with BT_IC on BT
Module in serial data.
SPEAKER
TGA470
Handset
DECT6.0
Main PCB
BBIC
(IC501)
EEPROM IC611
FLASH IC601
(Data)
(TAM)
TEL I/F
POWER
PSTN DC
5.5V
KX-TG7731S/KX-TG7732S/KX-TG7733S/KX-TGA470S
Bluetooth Devices
Cellular Phone
(For Link to Cell
communication)
Bluetooth
Control/Data
signal
(UART)
BT_Module
Audio signal
(PCM)
QSPI FLASH
IC502
(Program)
7
Bluetooth
Headset
Bluetooth
(IC721)