DOWNLOAD Panasonic KX-TG8551CAB / KX-TG8561CAB / KX-TGA855RUB Service Manual ↓ Size: 8.49 MB | Pages: 103 in PDF or view online for FREE

7

*1 KX-TG8551
*2 KX-TG8561

• Design and specifications are subject to change without notice.

• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
• Analog telephone connection: Telephone Line
• DECT repeater: KX-A405
• Optional headset: KX-TCA94EX 

DECT (Digital Enhanced Cordless Telecommunications), GAP (Generic Access Profile)

120 Duplex Channels

1.88 GHz to 1.90 GHz

TDMA (Time Division Multiple Access)

1,728 kHz

1,152 kbit/s

GFSK (Gaussian Frequency Shift Keying)

Approx. 10mW (average power per channel)

ADPCM 32 kbit/s

0

°C - 40°C, 20 % - 80 % RH (Relative Humidity)

220 - 240 V AC, 50/60 Hz
Base unit: PNLV226CE0Z
Charger: PNLV226CE0Z 

Standby: Approx. 0.38 W
Maximum: Approx. 2.4 W
Base unit

Standby: Approx. 0.48 W
Maximum: Approx. 2.5 W
Charger:
Standby: Approx. 0.1 W
Maximum: Approx. 1.8 W

Base unit

*1

: Approx. 103 mm x 106 mm x 43 mm

Base unit

*2

: Approx. 112 mm x 121 mm x 43 mm

Handset: Approx. 48 mm x 25 mm x 150 mm
Charger unit: Approx. 72 mm x 76 mm x 43 mm 

Base unit

*1

: Approx. 120 g

Base unit

*2

: Approx. 170 g  

Handset: Approx. 110 g  
Charger: Approx. 50 g  

8

Analog

Front

End

To TEL_LINE

Bridge

Rect D101

Hook Switch

Q141, Q142, Q161

Audio

Bell/Caller ID

Interface

CPU

MICn

LSRp

RINGn

CIDINp

CIDINn

CIDOUT

RINGOUT

BELL

HOOK

CHARGE_DET

Off-Hook Line Voltage

P

ARADET

A/D

D/A

ADPCM

Codec Filter

DSP

Speech Encoding

Speech Decoding

BMC

Burst Encoding

Burst Decoding

RF

PLL

XT

AL2

XT

AL1

EEPROM

SCL

SDA

To AC Adaptor

To HANDSET

Limit

Re

s

is

tor

R

3

71, R

3

72,

D

3

62

Charge

Detector

Power Failer Mode

Power Supply SW

      Q351,IC351

CHARGE(+)

CHARGE(-)

Optional

for KX-TG8561 only

Optional

DC/DC con

v

e

rt

o

D

C

/D

C

 c

o

n

v

e

rt

o

r

IC

3

02,L

3

01,

IC

3

0

2

,L

3

0

1

,

C

3

42,Q

3

10

C

3

4

2

,Q

3

1

0

Q

3

02
Q

3

0

2

Q

3

01
Q

3

0

1

2.4V

Reg.

1.8V

Reg.

2.85 V

2.4 V

1.8 V

BBIC

KX-TG8551/TG8561 BLOCK DIA

GRAM (BASE UNIT)

MOD/DEMOD

Charge

Pump

DCDC

Converter

Re

s

et

CP_VO

YT2

XTAL

X501X

5

0

1

10.368

MHz

RX

n

RX

p

TX

p

TX

n

TX

on

RX

on

D801

ANT1

ANT2

ANT1

ANT2

ANT1

ANT2

L1

L2

DCP

DCM

FLASH MEMORY

QSPI

FLASH MEMORY

CP_VO

YT1

3.0V

3.0V

RSTN

pin 62:

 TG855x

pin 77:

 TG856x

TAM-CSn

SPI-DI 
SPI-DO

SPICLK

QSPI-CS

DC-SENSE

DC-CTRL

QSPI-SCK

QSPI-IO 0-3

Q701, Q702

CD_I

QSPI

Control

9

Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (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.)
- DCDC Converter
- Integrated 1.9GHz PA for DECT

• EEPROM: IC611

- Temporary operating parameters (for RF, etc.)

• FLASH MEMORY: IC601 (for KX-TG8561 only)

- Voice Prompt (TAM) D/L Area
- ICM/OGM Recording Area

• 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

• QSPI FLASH MEMORY IC502

- Main Program D/L Area

10

KX-TG8551/8561 BLOCK DIAGRAM (Base Unit_RF Part)

DA801

ANT2

ANT1

TXON

RXON

RXp

RXn

ANT2

ANT1

TXp

TXn