Panasonic KX-A142RUM - Block Diagram (Base Unit)

19 BLOCK DIAGRAM (BASE UNIT)
Audio
A/D
D/A
Analog
Front End
LED
CPU
BBIC
IC2
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
IC3
4.0V
Reg.
2.65V
Reg.
4.0V
2.65V
VUNREG
40
41
28
24
61
9
6
30
11
63
64
6
5
6
4
RF Module
20
30
10
33
CHARGE
CONTACT
18
16
XTAL
X1
10.368
MHz
DTXAF
DTXAF
27
26
Bell/Caller ID
Interface
ANT1
ANT2
to Tel_Line
A
B
to AC Adaptor
Limit
Register
Bridge Rect
D2
Hook Switch
Q2, Q3
KX-TCD410RUM/RUS&412RUM/RUS BLOCK DIAGRAM (BASE UNIT)
A0...A18 D0...D7 30
IC4
Flash PROM
DATA
CTRL
ADDRESS
K
X
-
T
C
D
4
1
0
R
U
M
/
K
X
-
T
C
D
4
1
0
R
U
S
/
K
X
-
T
C
D
4
1
2
R
U
M
/
K
X
-
T
C
D
4
1
2
R
U
S
/
K
X
-
A
1
4
1
R
U
M
/
K
X
-
A
1
4
1
R
U
S
/
K
X
-
A
1
4
2
R
U
M
/
K
X
-
A
1
4
2
R
U
S
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