Panasonic KX-TCD450 Series

19 BLOCK DIAGRAM (BASE UNIT)
KX-TCD450RUM/RUT BLOCK DIAGRAM (BASE UNIT)
Audio
Hook Switch
Q2, Q3
Bridge
Rect D2
A/D
D/A
Analog
Front End
LED
CPU
BBIC
HOOK
RXAF
TXAF
DSP
BMC
Speech Encoding
Speech Decoding
RF
Interface
Burst Building
Burst Decoding
ADPCM
Codec Filter
EEPROM
IC1
SDA
SCL
SYRI
RSSI
SYEN
RXDA
TXDA
J2
J1
IC2
IC3
4.0V
Reg.
2.65V
Reg.
4.0V
2.65V
VUNREG
63
64
43
37
95
71
15
8
46
20
99
100
10
5
6
4
RF Module
20
5
10
33
Limit
Register
CHARGE
CONTACT
28
25
XTAL
10.368
MHz
DTXAF
DTXAF
42
40
Bell/Caller ID
Interface
ANT1
ANT2
to Tel_Line
A
B
to AC Adaptor
13
Flash
Memory
IC4
CS, OE, WR
A00-A18
D0~D7
X1
KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT
57