Panasonic KX-TCD450 Series

21 BLOCK DIAGRAM (HANDSET)
31
CPU
IC1
IC10
BBIC
A/D
D/A
Analog
Front
End
Speech
Encoding
Speech
Decoding
DSP
ADPCM
Codec
Filter
BMC
RF
Interface
MIC
EEPROM
IC3
SDA
SCL
64
65
5
6
SYRI
RSSI
SYEN
RXDA
TXDA
14
10
46
21
11
RF
Module
ANT
BATTERY
TERMINAL
TP3
TP4
CHARGE
CIRCUIT
CHARGE
CHARGE DETECT
SWITCHED
SUPPLY
CHARGE
CONTACTS
TP5
4.0V
VDDBAT
VDDLR
SWITCH
29
XTAL
10.368
MHz
KEYPAD
BACKLIT
KEYPAD LEDS
COLUMNS
ROWS
LCD
ON SWITCH
36
25
32
34
35
79
80
26
KX-A145RUM/RUT BLOCK DIAGRAM (HANDSET)
INH/RS 67
CS/CE 63
DISDATA 86
EARPIECE
SPEAKER
40
39
47
15~19
51~53, 57, 58
24
Burst
Encoding
Burst
Decoding
+
TP6
D20
DISCLK 50
AMPLIFIER
IC4
43
Headset
JACK
SP_AMP
69
Flash
Memory
IC2
ADR 00~18
CE, OE, WR
DAT 00~07
Q7, Q8
Q1
X1
SP-PHONE LED
61
KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT