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4
3 CHANGES (Suffix Code: D or later)
3.1.
Technical Descriptions
3.1.1.
Block Diagram (Base Unit)
[Changed from original section “4.1. Block Diagram (Base Unit)”]
Analog
Front
End
To TEL_LINE
Bridge
Rect
D3 D
3
Hook Switch
Q3,Q4,Q5Q
3
,Q
4
,Q
5
Audio
Bell/Caller ID
Interface
CPU
19
21
13
15
17
18
12
BELL
HOOK
Off-Hook Line Voltage
11
A/D
D/A
ADPCM
Codec Filter
DSP
Speech Encoding
Speech Decoding
BMC
Burst Encoding
Burst Decoding
RF
PLL
3
1
87
7
8
EEPROM
SCL
SDA
46
66
67
AC Adaptor
ANDSET
Limit
Resistor
Charge
Detector
Power Failer Mode
Power Supply SW
Q351,IC351
CHARGE(+)
CHARGE(-)
Optional
Optional
DC/DC convertorD
C
/D
C
c
o
n
v
e
rt
o
r
IC2,L3,C36,Q602IC
2
,L
3
,C
3
6
,Q
6
0
2
Q8Q
8
1.8V
Reg.
2.85 V
3.0 V
1.8 V
BBIC
IC401
IC7
KX-TG8051 BLOCK DIA
GRAM
(BASE UNIT)
MOD/DEMOD
Charge
Pump
DCDC
Converter
45
XTAL
X1X
1
10.368
MHz
RX
n
RX
p
TX
p
TX
n
TX
on
RX
on
D801
4
72
ANT1
ANT2
ANT1
ANT2
ANT1
ANT2
86
88
L1
L2
DCP
DCM
2
QSPI
FLASH MEMORY
IC431
44
3.0V
QSPI-CS
DC,DCI
DC-CTRL
DC-SENSE
QSPI-SCK
QSPI-IO 0-3
47,48,
51,53
Q22,Q23
R55,R56,
D22
52
49
30
29
29
31
QSPI
Control
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