11
KX-PRW130W/KX-PRWA13W
4.3.
Circuit Operation (Base Unit)
4.3.1.
Outline
Base Unit consists of the following ICs as shown in
Block Diagram (Base Unit)
(P.10).
• DECT BBIC (
B
ase
B
and IC): IC501
- Handling all the audio, signal and data processing needed in a DECT base unit
- Controlling the DECT specific physical layer and radio section (
B
urst
M
odule
C
ontroller 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
- PLL Oscillator
- Detector
- Compress/Expander
- First Mixer
- All interfaces (ex: QSPI FLASH MEMORY, EEPROM, LED, Analog Front End, etc.)
- Integrated 1.9GHz PA for DECT
- SP-Phone
- TAM-Counter
• EEPROM: IC502
- Temporary operating parameters (for RF, etc.)
• FLASH MEMORY: IC611
- Voice Prompt (TAM) D/L Area
- ICM/OGM Recording Area
• Additionally,
- Power Supply Circuit (+3.0 V, +1.8 V output)
- Crystal Circuit (10.368 MHz)
- Charge Circuit
- Telephone Line Interface Circuit
• QSPI FLASH MEMORY IC503
- Main Program D/L Area
• Wi-Fi module : IC800
- Handling the audio, signal and data processing related to Wi-Fi.
- Support IEEE802.11b/11g/11n.
- Controlling the connection with the smartphone application.
- Power Supply Circuit (+1.5V output).