15 CIRCUIT OPERATION (BASE UNIT)
15.1. Outline
Base Unit consists of the following ICs as shown in BLOCK DIAGRAM (BASE UNIT) (P.39).
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DECT BBIC (Base Band IC): IC2
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Handling all the audio, signal and data processing needed in a DECT base unit
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Controlling the DECT specific physical layer and radio section (Burst Module Controller section)
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ADPCM codec filter for speech encoding and speech decoding (DSP section)
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Echo-cancellation and Echo-suppression (DSP section)
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Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
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DTMF receiver (DSP section)
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Clock Generation for RF Module
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ADC, DAC, timer, and power control circuitry
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All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)
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RF Module: IC3
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PLL Oscillator
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Detector
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Compress/Expander
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First/Second Mixer
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Amplifier for transmission and reception
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EEPROM: IC1
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Temporary operating parameters (for RF, etc.)
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Additionally,
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Power Supply Circuit (+4.0V, +2.65V output)
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Crystal Circuit (10.368MHz)
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Charge Circuit
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Telephone Line Interface Circuit
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KX-TCD150FXB / KX-TCD150FXC / KX-TCD152FXB / KX-TCA115EXB / KX-TCA115EXC
Summary of Contents for KX-TCA115EXB
Page 10: ...4 5 For Service Hint 10 KX TCD150FXB KX TCD150FXC KX TCD152FXB KX TCA115EXB KX TCA115EXC ...
Page 46: ...19 SIGNAL ROUTE 46 KX TCD150FXB KX TCD150FXC KX TCD152FXB KX TCA115EXB KX TCA115EXC ...
Page 52: ...22 2 Handset 52 KX TCD150FXB KX TCD150FXC KX TCD152FXB KX TCA115EXB KX TCA115EXC ...
Page 60: ...27 2 KX TCD152FXB 60 KX TCD150FXB KX TCD150FXC KX TCD152FXB KX TCA115EXB KX TCA115EXC ...
Page 66: ...Memo 66 KX TCD150FXB KX TCD150FXC KX TCD152FXB KX TCA115EXB KX TCA115EXC ...