Panasonic KX-TG1233BXT

14 BLOCK DIAGRAM (BASE UNIT)
Analog
Front
End
To TEL_LINE
A B
CN1
Bridge
Rect D3
Hook Switch
Q4, Q5
Audio
Bell/Caller ID
Interface
CPU
102
100
107
112
84
113
98
BELL
HOOK
Off-Hook Line Voltage
81 ADCO
D/A A/D
ADPCM
Codec Filter
DSP
BBIC
IC4
Speech Decoding Speech Encoding
BMC
Burst Decoding Burst Encoding
RF
Interface
IC2
26 28
RXDA
TXDA
25 39 40 38
RSSI
SYCL SYDA SYEN
ANT1 ANT2
RF Module
16
18
2
31
8
21
14
13 12
20
21
18
19
XTAL
X1
10.368 MHz
EEPROM
IC3
SCL SDA
66 67
Flash
Memory
(TAM)
IC6
RESET
CS
SCK
SI
83 80
79
10
SO
94
To AC Adaptor
CN1
Limit
Resistor
Charge Contacts
2.5V
4.0V
Reg.
IC1
3.0V
Reg.
Q2
1.8V
Reg.
Q3
4.0V
3.0V
1.8V
SP AMP
IC7
110
SP MIC
118
2.5V
Reg.
IC11
Key Matrix
58,61,62,63
15,42,50,51,52,53,54
13
3.0V
IN USE LED
2AP PCB
74VHC574
(D_FF)
IC9
74VHC574
(D_FF)
IC10
3.0V
ANS LED
SP-PHONE LED
LCD
85,86,87,88, 89,90,91,92
68,69,70,71, 72,73,74,75
2AP PCB
Charge Detect
12
Flash
Memory
(Program)
IC8
43,44,60, 3-9,29-32, 122-128
KX-TG1233 BLOCK DIAGRAM (BASE UNIT)
KX-TG1233BXS / KX-TG1233BXT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT
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