Block Diagram (Base Unit) - Panasonic KX-TCD346UAS Manual

14 BLOCK DIAGRAM (BASE UNIT)

To TEL_LINE
CN1
Off-Hook Line Voltage
A Bridge Hook Switch
Q4, Q5
Rect D3
B
Bell/Caller ID
Interface
HOOK
Charge Detect
Charge
Limit
Contacts
Resistor
To AC Adaptor
2.5V
2.5V
Reg.
IC11
CN1
4.0V
IC1
Reg.
4.0V
3.0V
Q2
Reg.
3.0V
1.8V
Q3
Reg.
1.8V
3.0V
IN USE LED
81 ADCO
102
D/A
Audio
100
A/D
Analog
Front
107
End
112
84
113
BELL 98
12
CPU
SCL 66
EEPROM
IC3 SDA 67
RESET 10
CS 83
Flash
Memory
SCK 80
(TAM)
SI 94
IC6
SO
79
58,61,62,63
15,42,50,51,52,53,54
Key Matrix
Q902
13
2AP PCB
Speech Decoding Burst Decoding
Speech Encoding Burst Encoding
RF
ADPCM
Interface
Codec Filter
DSP
BMC
BBIC
IC4
43,44,60,
2-9,29-32,
121-128
85,86,87,88,
89,90,91,92
68,69,70,71,
72,73,74,75
ANT1
ANT2
26 RXDA
16
28 TXDA 31
18
2
25 RSSI
8
40 SYCL
14
21
39 SYDA
13
38 SYEN
12
IC2
RF Module
XTAL
X1
20
10.368
MHz
21
SP AMP
SP
110
IC7
MIC
118
Flash
Memory
(Program)
IC8
SP-PHONE LED
Q901
ANS LED
74VHC574 3.0V
(D_FF) Q903
IC9
LCD
74VHC574
(D_FF)
IC10
2AP PCB
KX-TCD346 BLOCK DIAGRAM (BASE UNIT)