Panasonic KX-TCD300FXS

19 BLOCK DIAGRAM (BASE UNIT)
KX-TCD300FXS/FXT BLOCK DIAGRAM (BASE UNIT)
Analog
Front
End
To TEL_LINE
A
B
CN1
Bridge
Rect D3 D3
Hook Switch
Q4,Q5
Audio
Bell/Caller ID
Interface
Analog
Switch
CPU
59
54
61
52
60
56
55
BELL
HOOK
Off-Hook Line Voltage
64 ADCO
D/A
A/D
ADPCM
Codec Filter
DSP
Speech Decoding
Speech Encoding
BMC
Burst Decoding
Burst Encoding
RF
Interface
18
19
RXDA
TXDA
15
21
20
22
RSSI
SYCL
SYDA
SYEN
ANT1
ANT2
RF Module
4
10
2
31
8
21
14
13
12
12
13
XTAL
X1
10.368
MHz
EEPROM
SCL
SDA
6
5
To AC Adaptor
CN1
Limit
Resistor
CHARGE
CONTACT
VUNREG
3.3V
Reg.
IC1
2.5V
Reg.
Q2
1.8V
Reg.
Q3
3.3V
2.5V
1.8V
BBIC
IC3
IC8
IC2
KX-TCD300FXS / KX-TCD300FXT / KX-TCA130FXS / KX-TCA130FXT
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