KX-TG8301UAB, KX-TG8301UAJ, KX-TG8301UAT, KX-TG8301UAW, KX-TG8302UAB, KX-TG8302UAT, KX-TGA830RUB, KX-TGA830RUJ, KX-TGA830RUT, KX-TGA830RUW (serv.man2) - Panasonic Telephone Service Manual (repair manual). Page 8

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KX-TG8301UAB/KX-TG8301UAJ/KX-TG8301UAT/KX-TG8301UAW/KX-TG8302UAB/KX-TG8302UAT/KX-TGA830RUB/KX-TGA830RUJ/KX-TGA830RUT/KX-TGA830RUW

Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7).

• DECT BBIC (Base Band IC): IC7

- Handling all the audio, signal and data processing needed in a DECT base unit
- Controlling the DECT specific physical layer and radio section (Burst Module Controller section)
- ADPCM code filter for speech encoding and speech decoding (DSP section)
- Echo-cancellation and Echo-suppression (DSP section)
- Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
- DTMF receiver (DSP section)
- Clock Generation for RF Module
- ADC, DAC, timer, and power control circuitry
- All interfaces (ex: RF Power Amp., EEPROM, LED, Analog Front End, etc.)
- PLL Oscillator
- Detector
- Compress/Expander
- First Mixer

• RF Power Amp.: IC801

- Amplifier for transmission and reception

• EEPROM: IC401

- Temporary operating parameters (for RF, etc.)

• Additionally,

- Power Supply Circuit (+3.0 V, +2.4 V, +1.8 V output)
- Crystal Circuit (10.368 MHz)
- Charge Circuit
- Telephone Line Interface Circuit