Panasonic KX-TCD412NZM Service Manual page 106

J1
to Tel_Line
A
Bridge Rect
B D2
Bell/Caller ID
Interface
Limit
Register
VUNREG
J2
4.0V
to AC Adaptor
Reg.
4.0V
2.65V
Reg.
2.65V
Hook Switch
Audio
Q2, Q3
LED
HOOK
DTXAF
DTXAF
CHARGE
CONTACT
SCL
EEPROM
6
IC1 SDA
5
TXAF 28
A/D
Speech Encoding
24
RXAF
D/A
Speech Decoding
Analog
ADPCM
Front End
Codec Filter
61
26
27
CPU
41
40
Burst Building
Burst Decoding
RF
BMC Interface
DSP
BBIC
IC2
KX-TCD412NZM BLOCK DIAGRAM (BASE UNIT)
ANT1
ANT2
9
TXDA
4
33
6
RXDA
20
30
RSSI
30
11
SYRI
63
IC3
64
SYEN
6
10
RF Module
XTAL
18
X1
10.368
MHz
16