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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

13

There are 2 pattern from power supply voltage.
1) AC adapter voltage is converted to VBAT(3.0V) at DCDC converter.
2) Battery voltage goes through to VBAT(Battery voltage).
VBAT is used for various voltage of the system.
Circuit Operation:

Startmonitor

(IC501 57pin)

VDD1 (1.8 V)

VBAT

Reset (RSTN) 
(IC501_77pin)

BBIC chip initialize

(CKM/STM)

AC adapter

+5.5V

Battery

Charge
Control

Circuit

DCDC

converter

IC302

VDD3

VBAT

Q301

VDD1

+1.8V

QSPI FLASH

IC502

TAM FLASH

IC601(KX-TGF320 only)

RF Part

DCDC

converter

VDD6

4.0V

LCD module

VDD4

3.0V_CP1

LEDs

BBIC

IC501

3.0V_CP2

VDD5

Sub IC

IC421

LCD bac

k

light