Panasonic KX-TGK310RUB / KX-TGK320RUB / KX-TGKA31RUB Service Manual ▷ View online
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KX-TGK310SP/KX-TGK310JT/KX-TGK320JT/KX-TGK310FR/KX-TGK310RU/KX-TGK320RU/KX-TGK310NE//KX-TGK310GR/KX-TGKA31EX/KX-TGKA31RU
4.2.
Block Diagram (Base Unit_RF Part)
RXp
RXn
ANT1
TXp
TXn
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KX-TGK310SP/KX-TGK310JT/KX-TGK320JT/KX-TGK310FR/KX-TGK310RU/KX-TGK320RU/KX-TGK310NE//KX-TGK310GR/KX-TGKA31EX/KX-TGKA31RU
4.3.
Circuit Operation (Base Unit)
General Description:
(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.
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.
4.3.1.
BBIC (Base Band IC: IC501)
• 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.
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.
Telephone line, etc. They are determined by the signal path route operation of voice signal.
• Block Interface Circuit
RF part, Key scan, Telephone line.
4.3.2.
Flash Memory (IC601)(for KX-TGK320 only)
Following information data is stored.
• Voice signal
ex: Pre-recorded Greeting message, Incoming message
4.3.3.
EEPROM (IC611)
Following information data is stored.
• Settings
ex: message numbers, ID code, Flash Time, Tone/Pulse
RF part
ADPCM
Analog
Front
End
Front
End
&
Multi-
plexer
Multi-
plexer
TEL
Line
Interface
Line
Interface
Digital
Speech
Processor
Speech
Processor
Caller ID
Modem
Modem
Digital TAM System
Flash Memory IC601
Host CPU
BBIC (IC501)
TDD & TDMA
with FHSS
Processor
with FHSS
Processor
ADPCM
Keys
EEPROM IC611
for KX-TGK320 only
*1
*1
*1
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KX-TGK310SP/KX-TGK310JT/KX-TGK320JT/KX-TGK310FR/KX-TGK310RU/KX-TGK320RU/KX-TGK310NE//KX-TGK310GR/KX-TGKA31EX/KX-TGKA31RU
4.3.4.
Power Supply Circuit/Reset Circuit
The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is
insulated from VBAT by Doubler of BBIC.
Circuit Operation:
insulated from VBAT by Doubler of BBIC.
Circuit Operation:
5.5V
VBAT
RSTN(Reset)
pin 54
VBAT
pin 10
pin 57
pin 9
pin 15
IC501
IC302
IC601
BBIC
DOUBLER OUT
For peripherals
For peripherals
VDDC (1.2V)
AC Adaptor
3.0V
REGULATOR
FLASH
IC611
EEPROM
+3.0V
STM/CKM
Receive
Amp.
RF Part
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_54 pin)
(IC501_54 pin)
BBIC chip initialize
(CKM/STM)
Q171
* For KX-TGK320 only
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KX-TGK310SP/KX-TGK310JT/KX-TGK320JT/KX-TGK310FR/KX-TGK310RU/KX-TGK320RU/KX-TGK310NE//KX-TGK310GR/KX-TGKA31EX/KX-TGKA31RU
4.3.4.1.
Charge Circuit
The voltage from the AC adaptor is supplied to the charge circuits.
R371
F301
DCP
+5.5V
CHARGE-
CHARGE+
DCM
D362
C351
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