Panasonic KX-TC1205RUS Telephone User Manual


 
16 CIRCUIT OPERATION
16.1. Outline
Base unit consists of the following ICs as shown in BLOCK DIAGRAM.
CPU:IC2
Controlling the whole system
Forming/analyzing all data signals (ACK, CMD signal etc.*)
All interfaces (ex: LED, KEY, SP, Mic, LCD, Detector Circuit (Charge/ Power Down)
*Refer to EXPLANATION OF CPU DATA COMMUNICATION (P.32).
RF IC:IC1
PLL Oscillator
Detection
Compress/ Expander
first/ second mixer
Amplifier for transmission and reception
Additionally,
Power Supply Circuit
Reset Circuit
Charge Circuit
Telephone Line Interface Circuit
Handset consist of the following ICs as shown in BLOCK DIAGRAM.
CPU: IC2
All data signals (forming/analyzing ACK or CMD signal*)
All interfaces (ex; LED, Key, Buzzer, Detector Circuit, Charge, Battery Low)
RAM for keeping the data (CH Number, ID Code, etc.)
RF IC:IC1
PLL Oscillator
Detector
Compress/Expander
first, second mixer
Amplifier for transmission and reception
*Refer to EXPLANATION OF CPU DATA COMMUNICATION (P.32).
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KX-TC1205RUB / KX-TC1205RUW / KX-TC1205RUS / KX-TC1205RUF