Block Diagram (Handset) - Panasonic KX-TG1283JXS Service Manual

KX-TG1283JXS / KX-TG1283JXT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT

16 BLOCK DIAGRAM (HANDSET)

SPEAKER
RECEIVER
MIC
CHARGE(+)
CHARGE
CHARGE
CIRCUIT
CONTACTS
Q4,Q5,Q9 Q4,Q5,Q9
R7 R7
CHARGE(-)
J1
SWITCHED
BATTERY
SUPPLY
TERMINAL
J2
LCD
LCD-BACK LIGHT
KEY-BACK LIGHT
SP-PHONE LIGHT
CHARGE
CHARGE DETECT
SCL
EEPROM
D7 IC3 SDA
VBAT1
DC/DC-SWITCH
Q1 Q1
2.5V
4.0V
2.5V
Q3
1.8V
1.8V
Q2
RS
RESET
CS
SI
SCL
30
Speech
32
Decoding
66
D/A
Speech
67 Encoding
72
A/D
ADPCM
Codec
Analog
Filter
Front
End
DSP
62
52
45
44
58
56
59
CPU
60
11
77
6
9
10
7
75
46
48
RXDA
23
Burst
Decoding
TXDA
22
Burst
Encoding
RSSI
19
25
SYDA
RF
26
SYEN
Interface
24 SYCL
BMC
16
17
ON SWITCH
61
ROWS
1,12,40,76
27,28,34,35,36,74
COLUMNS
BBIC
IC1
KX-TCA122/121 BLOCK DIAGRAM (HANDSET)
RF
Module
CN6
XTAL
X1
10.368
MHz
BATTERY
KEYPAD