Read Panasonic KX-TG8227UAB / KX-TG8227UAR / KX-TG8227UAW / KX-TGA820RUB / KX-TGA820RUR / KX-TGA820RUW / KX-TGA820UAB / KX-TGA820UAR / KX-TGA820UAW Service Manual online
7
KX-TG8227UAB/KX-TG8227UAR/KX-TG8227UAW/KX-TGA820RUB/KX-TGA820RUR/KX-TGA820RUW/KX-TGA820UAB/KX-TGA820UAR/KX-TGA820UAW
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
Analog
Front
End
To TEL_LINE
A
B
CN1
Bridge
Rect
D3 D3
Hook Switch
Q
4
,Q
5
Audio
Bell/Caller ID
Interface
CPU
59
54
61
52
60
56
55
BELL
HOOK
Off-Hook Line Voltage
64 ADCO
A/D
D/A
ADPCM
Codec Filter
DSP
Speech Encoding
Speech Decoding
BMC
Burst Encoding
Burst Decoding
RF
Interface
18
19
TXDA
RXDA
21
20
22
SYCL
SYDA
SYEN
ANT1
ANT2
RF Module
18
16
2
31
8
21
14
13
12
12
13
XTAL
X
1
10.368
MHz
EEPROM
SCL
SDA
6
5
7
To AC Adaptor
CN2
Limit
Resistor
Charge
Detector
CHARGE
CONTACT
(Optional)
VUNREG
3.3V
Reg.
IC
1
2.5V
Reg.
Q
9
1.8V
Reg.
Q
8
3.3 V
2.5 V
1.8 V
BBIC
IC5
FLASH
MEMORY
(TAM)
TAM Companion IC
RESET
CS
CS
3
4
2
1
8
SCK
SI
SO
9
14
16
39
40
38
36
37
62
10
11
23
12
IC11
IC8
IC7
IC10
KX-TG8227 BLOCK DIA
GRAM
(BASE UNIT)
CLK
RST
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