Read Panasonic KX-TGH210UAB / KX-TGH212UAB / KX-TGH220UAB / KX-TGHA20RUB Service Manual online
8
KX-TGH210UAB/KX-TGH212UAB/KX-TGH220UAB/KX-TGHA20RUB
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
Analog
Front
End
To TEL_LINE
Bridge
Rect D101
Hook Switch
Q141, Q142, Q161
Audio
Bell/Caller ID
Interface
CPU
MICn
LSRp
RINGn
CIDINp
CIDINn
CIDOUT
RINGOUT
BELL
HOOK
CHARGE_DET
Off-Hook Line Voltage
P
ARADET
A/D
D/A
ADPCM
Codec Filter
DSP
Speech Encoding
Speech Decoding
BMC
Burst Encoding
Burst Decoding
RF
PLL
XT
AL2
XT
AL1
EEPROM
SCL
SDA
To AC Adaptor
To HANDSET
Limit
Re
s
is
tor
R
3
71, R
3
72,
D
3
62
Charge
Detector
CHARGE(+)
CHARGE(-)
Optional
IC
3
02
3
.0V
IC
3
0
2
3
.0
V
REGULA
T
O
R
R
E
G
U
L
A
T
O
R
Q
3
01
Q
Q
3
0
1
1.8V
Reg.
3
.0 V
1.8 V
BBIC
IC611
IC501
KX-TGH210/220 BLOCK DIA
GRAM (BASE UNIT)
MOD/DEMOD
Charge
Pump
DCDC
Converter
Re
s
et
CP_VOUT2
XTAL
X501X
5
0
1
10.368
MHz
RX
n
RX
p
TX
p
TX
n
ANT1
ANT1
L1
L2
DCP
DCM
FLASH MEMORY
IC601
QSPI
FLASH MEMORY
IC502
CP_VOUT1
3.0V
RSTN
Pin 71
TAM-CSn
SPI-DI
SPI-DO
SPI-DO
SPICLK
QSPI-CS
QSPI-SCK
QSPI-IO 0-3
Q701, Q702
QSPI
Control
3.0V
P
o
w
er F
a
ulire Mode
P
o
w
er Supply SW
Q
3
51, Q
3
52, R
3
55
1.8 V
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