Panasonic KX-FG2452CX Service Manual page 60

KX-FG2452CX
6.14.5.3. Construction
The circuit mainly consists of DSP and RF unit as shown in the block diagram.
6.14.5.4. DSP: IC201
Function
• Battery Low, Power down detect circuit
• Ringer Generation
• Interface circuit
RF unit, speaker, Mic, LED, Key scan, LCD, Headset
Note:
(*1) The initializing time of the DSP chip is 20ms under normal conditions.
6.14.5.5. RF Unit
Mainly voice signal is modulated to RF, or it goes the other way.
6.14.5.6. EEPROM: IC241
All setting data is stored.
ex: ID code, User setting (Phonebook, Caller ID data)
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