Block Diagram (Base Unit) - Panasonic KX-A144 Series Service Manual

20 BLOCK DIAGRAM (BASE UNIT)

J1
to Tel_Line
A
Bridge
B
Rect
BBIC
Interface
CHARGE
Limit
Resistor CONTACT
VUNREG
J2
4.0V
to AC Adaptor
Reg.
4.0V
2.65V
Reg.
2.65V
TXAF 28
A/D
Hook
Audio
24
RXAF
Switch
D/A
Analog
Front End
RINGER
HOOK 61
DTXAF 26
DTXAF 27
EEPROM SCL 41
6
IC1 SDA 40
5
Burst Building
Speech Encoding
Burst Decoding
Speech Decoding
ADPCM
Codec Filter
BMC
DSP
CPU
IC2
BBIC
ANT1
ANT2
9
TXDA
4
33
5
RXDA
20
30
RSSI
30
11
RF SYRI
63
Interface
IC3
64
SYEN
6
10
RF Module
XTAL
18
10.368
MHz
16
KX-TCD440HGS/HGT BLOCK DIAGRAM (BASE UNIT)