Block Diagram (Handset) - Panasonic KX-TG8200BXB Service Manual

4.3.

Block Diagram (Handset)

RECEIVER
MIC
CN4
1
2
3
4
5
Headset
KEY-BACK LIGHT
SPEAKER
CHARGE(+)
CHARGE
CHARGE
CIRCUIT
CONTACTS
Q4,Q5,Q9
R7
CHARGE(-)
D7
J1
SWITCHED
BATTERY
SUPPLY
TERMINAL
Q1 Q1
J2
LCD
LCD-BACK LIGHT
66
67
72
75
32
30
CHARGE
62
CHARGE DETECT
52
45
SCL
EEPROM
44
IC3
SDA
VBAT1
58
DC/DC-SWITCH
56
2.5V
4.0V
59
2.5V
Q3 Q3
1.8V
60
1.8V
Q2 Q2
CD 11
77
RESET
CSB 6
SDA
47
SCL 46
5
Speech
Decoding
D/A
Speech
Encoding
A/D
ADPCM
Codec
Analog
Filter
Front
End
DSP
CPU
27,28,34,35,36,74
BBIC
IC1
KX-TGA820 BLOCK DIAGRAM (HANDSET)
11
KX-TG8200BXB/KX-TGA820BXB
RXDA
23
Burst
Decoding
TXDA
22
Burst
Encoding
RSSI
19
25 SYDA
RF
26 SYEN
Interface
24 SYCL
BMC
XTAL
16 X1 X1
17
ON SWITCH
61
1,12,40,76 ROWS
COLUMNS
RF
Module
IC4
10.368
MHz
BATTERY
KEYPAD