DOWNLOAD Panasonic KX-TGF310RUM / KX-TGF320RUM / KX-TGF320UCM / KX-TGFA30RUM Service Manual ↓ Size: 9.24 MB | Pages: 116 in PDF or view online for FREE

9

Base Unit consists of the following ICs as shown in Block Diagram (Base Unit_Main) (P.8).

• DECT BBIC (Base Band 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 (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
- 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

• FLASH MEMORY: IC601

- 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 IC502

- Main Program D/L Area

10

TX

 AMP

SIDE TONE

RX

 AMP

CONTROL

CIRCUIT

CALLER ID

DETECT

BELL

DETECT

P101

R142

3

4

2

1

C101

Q141

C102

SA101

TIP

RING

R141

REGULATOR

C104

R102

C106

R104

C103

R101

C105

R103

D101

11

10.368

MHz

IC501 RF block

TXDATA

ANT1

ANT1

RF_TXp

RF_TXn

RF_RXp

RF_RXn

ANT2

ANT2

Control

Logic

RXDATA

Mixer

Demodulator

PLL

3856-3843MHz

/3859-3845MHz

Modulator

DA802

KX-TGF310/320 BLOCK DIAGRAM (

B

a

s

e

 U

n

it

_

R

F P

a

rt

)

12

(BBIC, Flash Memory, EERROM) is a digital speech/signal processing system that implements all the functions of speech
compression, record and playback, and memory management required in a digital telephone answering machine.
The BBIC system is fully controlled by a host processor. The host processor provides activation and control of all that functions
as follows.

• Voice Message Recording/Play back

The BBIC system uses a proprietary speech compression technique to record and store voice message in Flash Memory.
An error correction algorithm is used to enable playback of these messages from the Flash Memory.

• DTMF Generator

When the DTMF data from the handset is received, the DTMF signal is output.

• Synthesized Voice (Pre-recorded message)

The BBIC implements synthesized Voice, utilizing the built in speech detector and a Flash Memory, which stored the vocabulary.

• Caller ID demodulation

The BBIC implements monitor and demodulate the FSK/DTMF signals that provide CID information from the Central Office.

• Digital Switching

The voice signal from telephone line is transmitted to the handset or the voice signal from the handset is transmitted to the
Telephone line, etc. They are determined by the signal path route operation of voice signal.

• Block Interface Circuit

RF part, LED, Key scan, Speaker, Telephone line.

Main program data is stored.

Following information data is stored.

• Voice signal

ex: Pre-recorded Greeting message, Incoming message

RF part

ADPCM

Analog
Front
End

&
  
Multi-
plexer

TEL
Line
Interface

Digital
Speech
Processor

Caller ID
Modem

Digital TAM  System

Flash Memory  IC601

 Host CPU

TDD & TDMA
 with FHSS
Processor

ADPCM

PCM OUT

MIC

SP

PCM IN

Keys/ LEDs
/ Charge

Flash Memory

(Program)

IC502