KX-TG8081RUB, KX-TGA806RUB (serv.man3) - Panasonic Telephone Service Manual Supplement (repair manual). Page 3

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3
3 CHANGES (Suffix Code: D or later)
3.1.
Technical Descriptions
3.1.1.
Block Diagram (Handset)
[Changed from original section “4.3. Block Diagram (Handset)”]
QSPI
FLASH MEMORY
IC4
SPEAKER
RECEIVER
MIC
CHARGE
Power Failer Mode
Power Supply SW
Q10, R11, Q12,
Q11, R14, R13, R6
CIRCUIT
Q4, Q5, Q6,Q
4
Q
5
Q
6
,
Q9, R4Q
9
R
4
CHARGE
CONTACTS
CHARGE(+)
CHARGE_CTRL
BATTERY_ON
CHARGE
EEPROM
SCL
SDA
BATTERY
TERMINAL
R45
VBAT
BATT-
1.8 V
Q2Q
2
1.8 V
CP 2.8 V
LCD
CD
RESET
CSB
SDA
 SCL
CPU
Analog
Front
End
D/A
A/D
35
37
21
22
17
18
34
33
66
67
 38
24
44
45
73
63
64
76
ADPCM
Codec
Filter
DSP
Speech
Decoding
Speech
Encoding
BMC
Burst
Decoding
ANT1
Burst
Encoding
RF 
PLL
MOD/DEMOD
3
1
2
87
86
RXn
RXon
ANT1
DA801
RXp
TXp
TXn
TXon
7
8
XTAL
X1
10.368
MHz
BATTERY
46
ON SWITCH
KEYPAD
Charge
Pump
ROWS
COLUMNS
CP3.0V
D3
CP2.8V
CPV2
57, 58, 59, 60
25, 11, 12, 13, 14, 55
53, 48, 47, 51 QSPI-IO 0-3
BBIC
IC1
IC3
 65
LCD-BACK  LIGHT
KEY   LED
BELL  LED
61
80
88
LDO_CTRL
KX-TGA806 BLOCK DIA
GRAM (HANDSET)
CP 3.0 V
CP 2.8 V
QSPI
Control
 52 QSPI-SCK
 49 QSPI-CS
TGA661 only
79
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