Read Panasonic KX-TG5581RUB / KX-TGA551RUB Service Manual online
7
KX-TG5581RUB/KX-TGA551RUB
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
Analog
Front
End
To TEL_LINE
Bridge
Rect
D3 D
3
Hook Switch
Q3,Q4,Q5Q
3
,Q
4
,Q
5
Audio
Bell/Caller ID
Interface
CPU
21
23
15
17
19
20
14
BELL
HOOK
Off-Hook Line Voltage
13
A/D
D/A
ADPCM
Codec Filter
DSP
Speech Encoding
Speech Decoding
BMC
Burst Encoding
Burst Decoding
RF
PLL
5
2
79
9
10
EEPROM
SCL
SDA
59
58
To AC Adaptor
DC/DC convertorD
C
/D
C
c
o
n
v
e
rt
o
r
IC2,L3,C36,Q602IC
2
,L
3
,C
3
6
,Q
6
0
2
Q9Q
9
Q8Q
8
2.4V
Reg.
1.8V
Reg.
2.85 V
2.4 V
1.8 V
BBIC
IC401
IC7
KX-TG5581 BLOCK DIAGRAM (BASE UNIT)
MOD/DEMOD
Charge
Pump
DCDC
Converter
44
XTAL
X1X
1
10.368
MHz
RX
n
RX
p
TX
p
TX
n
TX
on
RX
on
D801
6
72
ANT1
ANT2
ANT1
ANT2
ANT1
ANT2
78
80
L1
L2
DCP
DCM
3
QSPI
FLASH MEMORY
IC431
43
3.0V
QSPI-CS
DC,DCI
DC-CTRL
DC-SENSE
QSPI-SCK
QSPI-IO 0-3
90,92,
94,96
91
95
83
82
82
84
QSPI
Control
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