Panasonic KX-TG6811CAB / KX-TG6811CAM / KX-TG6812CAB / KX-TG6821CAB / KX-TG6821CAM / KX-TG6822CAB / KX-TGA681RUB / KX-TGA681RUM Service Manual ▷ View online
69
KX-TG6811CAB/KX-TG6811CAM/KX-TG6812CAB/KX-TG6821CAB/KX-TG6821CAM/KX-TG6822CAB/KX-TGA681RUB/KX-TGA681RUM
KX-TG6811CA SCHEMATIC DIAGRAM (Base Unit (Main))
NC: No Components
2/2
Optional charge detector
Charge current
!
Caller ID
Bell signal
Loop Current
TX AF
RX AF
3.0 V
3.0 V
RX AF
URX
UTX
HOOK
BELL
BELL
CAP_SW
PULSE_MUTE
HOOK
BELL
PULSE_MUTE
HS_SUPPLY_DET
CAP_SW
CAP_CHG
EEP_WP
I2C_SCL
I2C_SDA
CHARGE_DET
MSG_LED
KEYIN1
KEYIN2
KEYIN3
LCT_KEY
KEYS_C
KEYS_D
+5.5V
PCB
RE1
PNLB2157ZA-**
HAK_CL1
C185
NC
C133
NC
C151
10p
C501
0.1u
C520
0.1u
R121
390k
R122
390k
C120
1000p
C172
NC
+3.0V
+3.0V
DCP
DCM
CHARGE-
CHARGE+
C124
NC
C123
NC
R505
NC
+3.0V
VCCA
VCCA
ZA1
1
2
6
7
9
11
3
4
5
8
10
12
C522
NC
*C361
NC
C504
1u
C521
1u
R501
10
+3.0V
+3.0V
VDDC
R179
1k
VBG
VREF
D361
NC
C134
NC
C507
2.2u
L501
@Doub
100n
+3.0V
L2R
L1R
L1T
L2T
SA103
NC
2
1
R141
100k
R142
2.7k
2
4
1
Q
.
R144
NC
C142
10n
Q161
C163
NC
R161 100k
C152
0.01u
4
8
1
C
u
1
C181
NC
TP10
R166
NC
R117
100k
R115
5.6M
R116
5.6M
R118
100k
F301
3A
D362
*Q351
CHG+
C115
100n
C116
100n
Q111
D133
D132
D153
NC
D113
R136
NC
C161
10u
C162
NC
R170
NC
*Q901
*R701
NC
*Q701
NC
Q171
*Q704
+3.0V
+5.5V
*Q352
*Q902
*R918
10k
*R907
100k
*R359
NC
*R904
10k
R114
68k
R165
27k
C11
3
0.01u
*R70
8
6.8k
*Q904
*R707
33K
*R920
22k
*Q702
NC
*R917
1.5k
*Q903
*R902
2.7k
R702
1k
*R35
1
1k
*R352
1k
Vcap
R177 1k
R113
22k
R111
1M
R112
47k
*SA101
J0LY00000193
*R304
2
.2k
R158 4.7k
*R924
NC
VBAT
+3.0V
RA611
3.3k
3.3k
1
2
3
4
5
6
7
8
C611
0.1u
RA151
1k
1
2
3
4
C502
10u
C503
10u
C505
10u
C121 680p
C122 680p
C122 680p
D101
1
4
3
2
R176
1k
C176
@Doub
1u
C506
1u
C321
1u
+5.5V
C322
NC
IC302
3
IN
2
OUT1
1
ADJ
4
OUT2
VBAT
C342
0.1u
VBAT
NC
3
2
3
R
*
R371
1
R372
1
R163
39(0.5W)
RA602
NC
1
2
3
4
GAP
1
2
ANS_LED
+5.5V
C165
NC
RA601
NC
2
3
45
6
7
C110
0.1u
C112
0.1u
R172
680k
R175
3.9k
R104
NC
C343
1u
6.3
R167
NC
R152
470k
R151
390k
*D301
R322
100
1
GPIO[20]
2
GPIO[21]
23
MIP
3
GPIO[22]
4
GPIO[23]
5
GPIO[24]
6
GPIO[25]
7
GPIO[26]
8
VDDC2
24
HSMIN
25
HSMIP
26
MPWR
27
HSSPOUTP
28
LOUT
29
SPOUTN
30
VCCPA
81
GPIO[13]
82
GPIO[14]
83
GPIO[15]
84
GPIO[16]
85
GPIO[17]
86
VDDIO2
87
GPIO[18]
88
GPIO[19]
89
9
COREOUT
10
VBAT
11
DOUBCAPN1
12
DOUBCAPN
13
DOUBCAPP
14
DOUBCAPP1
15
DOUBOUT
16
DCIN0/LIN0
17
DCIN1
18
DCIN2
19
DCIN3/LIN1
20
VREF
21
VCCA
22
MIN
31
SPOUTP
32
PWM1
79
GPIO[11]
80
GPIO[12]
C175
560p
C344
NC
*C166
NC
C173
0.027u
*R171
220
*R162
NC
*C341
1000p
*R321
200
*R901
560
*C362 22u
*C363
22u
*Q353
*Q354
*R353
100k
*R354
33k
*R35
5
680
*R360
47k
*R373
680
*R903
1.5k
*R919
33k
*R923
3.3k
*R925
3.3k
*C901
4u
C101
680p
C102
680p
*C104
NC
*C141
N
C
*C143
N
C
*R145
2.2k
C3EBKY000028
IC611
1
E0
2
E1
6
SCL
7
*WC
3
E2
8
VCC
4
VSS
5
SDA
*R12
41
0
*C103 NC
*R103
NC
*R15
9
470
*C17
1
0.027u
k
7
.
2
4
6
1
R
*
*P101
D4FAR1830001
*Q141
B1ACGP000008
*D141
B0BC01800005
*Q905
*R906
1
0
L505
J0JCC0000416
R178
1k
*C167 1200p
*Q140
*R12
3N
C
*R14
8
10k
*R149
680
*R169
47k
*C164
0.033u
0
7
4
0
6
1
R
*
E
C
N
E
R
E
F
E
R
T
B
/
K
D
R
O
F
:
X
X
7
E
G
R
A
H
C
,
R
E
W
O
P
:
X
X
3
C
I
B
B
:
X
X
5
D
C
L
,
Y
E
K
,
M
O
R
P
E
E
,
H
S
A
L
F
:
X
X
6
P
S
,
C
I
M
:
X
X
4
E
N
I
L
L
E
T
:
X
X
1
F
R
:
X
X
8
Supply from HS
Backup CAP
DC Monitor
Caller ID
Bell detection
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(7)
(8)
(9)
(10)
IC501
B1ABCE000009
70
KX-TG6811CAB/KX-TG6811CAM/KX-TG6812CAB/KX-TG6821CAB/KX-TG6821CAM/KX-TG6822CAB/KX-TGA681RUB/KX-TGA681RUM
13.2.2. KX-TG6821CA
NC: No Components
1/2
0V
250mVp-p
0.75V
TX RF
RX RF
TX RF
RX RF
3.0 V
SHORT
SHORT
SHORT
SHORT
SHORT
SHORT
I2C_SCL
I2C_SDA
EEP_WP
JTAG_TDO
JTAG_TCK
JTAG_TMS
CHARGE_DET
CAP_CHG
SPI_DI
SPI_DO
SPI_CLK
SPI_CS
CNT_RST
JTAG_RTCK
JTAG_TDI
JTAG_RTCK
SPI_DI
SPI_DO
SPI_CLK
HS_SUPPLY_DET
MSG_LED
SPI_CS
KEYS_E
KEYIN2
KEYS_D
KEYIN3
I2C_SCL
I2C_SDA
KEYIN1
KEYIN2
KEYS_E
KEYIN1
LCT_KEY
CNT_RST
KEYS_C
JTAG_TDO
JTAG_TDI
JTAG_TCK
JTAG_TMS
JTAG_TDI
JTAG_TCK
JTAG_TMS
URX
UTX
C519
0.1u
C516
0.1u
C512
NC
C514
NC
C513
K2.2u
VDDC
C508
10p
VBAT
VDDC
C517
0.1u
C518
0.1u
C478
NC
C477
NC
RSTN
ANT2
RXn
ANT1
TXp
TXn
RXp
GND
STM/CKM/P15
+3.0V
TDO
TCK
TMS
TDI
RTCK
C530
NC
C522
NC
C509
12p
X501
13.824M
+5.5V
C331
NC
GND2
KEYIN2
LED_VDD
KEYIN3
KEYS_E
KEYIN1
KEYIN1
C651
NC
C662
NC
C653
NC
CNT_GND
C664
0
.1u
C656
NC
KEYS_C
I2C_SDA
CNT_VDD
C654
NC
MSG_LED
KEYS_D
I2C_SCL
C661
NC
C655
NC
C652
NC
CNT_RST
GND
GND
GND
GND
GND
ANT1
12
ANT1
ANT2
ANT2
12
DA802
B0DDCD000001
1
2
3
R891
470
GND
R892
470
C601
0.1u
R601
NC
+3.0V
C663
NC
R511
NC
VBAT
R356
NC
R357
NC
SPN
SPP
VBAT
ANT-Short1
GND
ANT-S-GND1
ANT-S-GND2
ANT-Short2
GND
C364 NC
D472
NC
D473
NC
L502
100n
C515
1u
C891
5p
C892
5p
C893
10p
C894
10p
Q651
R331
68k
R332
33k
RA502
10k
1
2
3
45
6
7
8
C511
10u
C510
1u
C657
NC
SW1
NC
1
2
URX
UTX
GND
VBAT
GND
L504
6.8n
RXp
C819
10p
GND
RXn
C897
4p
TXn
GND
C896
1p
VBAT
TXp
GND
R506 10k
1
2
36
7
8
IC601
16M Flash
1
*CS
2
SO/SIO1
6
SCLK
7
NC/SIO3
3
*WP/SIO2
8
VCC
4
GND
5
SI/SIO0
L474
NC
L476
NC
SHORT1
SHORT2
SHORT3
SHORT4
SHORT5
SHORT6
C2HBCY000127
IC501
45
TXp
46
RXp
47
RXn
48
GND_RF
49
TRSW_p
50
ANT_n
51
ATST_n
52
ATST_p
GND
31
SPOUTP
32
PWM1
33
PWM0
34
DCINS
35
XOUT
36
XIN
37
VBAT_APU
38
VDD_APU
39
VCC_IF
40
VDD_IF
41
VCC_FE
42
ANT
43
TRSW_n
44
TXn
53
TEST
54
RSTN
55
NC
56
VCC_VCO
57
GPIO[27]
58
VDDUSB
59
DM_USB/GPI28
60
DP_USB/GPI29
61
VDDC1
62
JTAG_TDO
63
JTAG_TDI
64
JTAG_TCK
65
JTAG_TMS
66
JTAG_RTCK
67
GPIO[0]/SCL_IIC
68
GPIO[1]/SDA_IIC
69
GPIO[2]
70
GPIO[3]
71
GPIO[4]
72
GPIO[5]
73
GPIO[6]
74
GPIO[7]
75
GPIO[8]
76
VDDIO1
77
GPIO[9]
78
GPIO[10]
79
GPIO[11]
80
GPIO[12]
R651 470
*IC612
4
VSS
3
NC
1
OUT
2
VDD
*R361
39k
*R358
1k
C810
1.2p
C895
3p
L503
3
.6n
C476
10p
C479
10p
TO RF BLOCK
1
1
5
8
ANT-
Pattern
Pattern
W 0.2mm
L mm
1st layer
L mm
1st layer
W 0.2mm
L mm
1st layer
L mm
1st layer
ANT-
Pattern
Pattern
MODELH=Dj
open-stub
SL
W=0.6mm
L=20mm
SL
W=0.6mm
L=20mm
MSL
Wm=0.4mm
Lm=10mm
Wm=0.4mm
Lm=10mm
open-stub
SL
W=2.0mm
L=10.8mm
SL
W=2.0mm
L=10.8mm
Tx-balun
SL
W=0.3
L=40mm
SL
W=0.3
L=40mm
SL
W=0.3mm
L=6.95mm
W=0.3mm
L=6.95mm
open-stub
SL
W=2.9mm
L=3.8mm
SL
W=2.9mm
L=3.8mm
SL
W=0.3mm
L=6.5mm
W=0.3mm
L=6.5mm
SL
W=0.3mm
L=12.45mm
W=0.3mm
L=12.45mm
SL
W=0.2mm
L=20mm
W=0.2mm
L=20mm
MSL
W=0.25
L=2mm
W=0.25
L=2mm
open-stub
SL
W=2.2mm
L=5.0mm
SL
W=2.2mm
L=5.0mm
Pre-matching
MSL
W=0.25
L=2mm
W=0.25
L=2mm
RF block
(1)
(2)
(3)
(4)
(5)
(5)
(6)
IC501
71
KX-TG6811CAB/KX-TG6811CAM/KX-TG6812CAB/KX-TG6821CAB/KX-TG6821CAM/KX-TG6822CAB/KX-TGA681RUB/KX-TGA681RUM
KX-TG6821CA SCHEMATIC DIAGRAM (Base Unit (Main))
NC: No Components
2/2
Optional charge detector
Charge current
!
Caller ID
Bell signal
Loop Current
TX AF
RX AF
3.0 V
3.0 V
RX AF
URX
UTX
HOOK
BELL
BELL
CAP_SW
PULSE_MUTE
HOOK
BELL
PULSE_MUTE
HS_SUPPLY_DET
CAP_SW
CAP_CHG
EEP_WP
I2C_SCL
I2C_SDA
CHARGE_DET
MSG_LED
KEYIN3
LCT_KEY
KEYS_C
KEYS_D
+5.5V
PNLB2157ZA-GW
PCB
RE1
HAK_CL1
C185
NC
C133
N
C
C151
1
0p
C501
0.1u
C520
0.1u
R121
390k
R122
390k
C120
1000p
C172
N
C
+3.0V
+3.0V
DCP
DCM
CHARGE-
CHARGE+
C124
NC
C123
NC
R505
NC
+3.0V
VCCA
VCCA
ZA1
1
2
6
7
9
11
3
4
5
8
10
12
*C361
NC
C504
1u
C521
1u
R501
10
+3.0V
VDDC
R179
1
k
VBG
VREF
D361
NC
C134
NC
C507
2.2u
L501
@Doub
100n
+3.0V
L2R
L1R
L1T
L2T
SA103
NC
2
1
R141
100k
R142
2.7
k
2
4
1
Q
.
C142
10n
Q161
C163
NC
R161 100k
C152
0.01u
4
8
1
C
u
1
C181
NC
TP10
R166
NC
R117
100k
R115
5.6M
R116
5.6M
R118
100k
F301
3A
D362
CHG+
C115
100n
C116
100n
Q111
D133
D132
D153
NC
D113
R136
N
C
C161
10u
C162
NC
R170
NC
*R701
NC
*Q701
NC
+3.0V
+5.5V
*Q352
R114
68k
R165
27k
C113
0.01u
R702
1
k
Vcap
R177 1k
R113
22k
R111
1M
R112
47k
*SA101
J0LY00000193
R158 4.7k
*R924
NC
VBAT
+3.0V
RA611
3.3k
3.3k
1
2
3
4
5
6
7
8
C611
0.1u
RA151
1k
1
2
3
4
C502
10u
C503
10u
C505
10u
C101 680p
C102
680p
C121 680p
C122 680p
C122 680p
D101
1
4
3
2
C506
1u
C321
1u
+5.5V
C322
N
C
IC302
3
IN
2
OUT1
1
ADJ
4
OUT2
VBAT
C342
0
.1u
VBAT
NC
3
2
3
R
*
R371
1
R372
1
R163
39(0.5W)
RA602
100
1
2
3
4
GAP
1
2
ANS_LED
+5.5V
C165
NC
RA601
100
45
C110
0.1u
C112
0.1u
C343
1u
6.3
R167
NC
R322
100
1
GPIO[20]
2
GPIO[21]
23
MIP
3
GPIO[22]
4
GPIO[23]
5
GPIO[24]
6
GPIO[25]
7
GPIO[26]
8
VDDC2
24
HSMIN
25
HSMIP
26
MPWR
27
HSSPOUTP
28
LOUT
29
SPOUTN
30
VCCPA
81
GPIO[13]
82
GPIO[14]
83
GPIO[15]
84
GPIO[16]
85
GPIO[17]
86
VDDIO2
87
GPIO[18]
88
GPIO[19]
89
9
COREOUT
10
VBAT
11
DOUBCAPN1
12
DOUBCAPN
13
DOUBCAPP
14
DOUBCAPP1
15
DOUBOUT
16
DCIN0/LIN0
17
DCIN1
18
DCIN2
19
DCIN3/LIN1
20
VREF
21
VCCA
22
MIN
R151
390k
R152
470k
*C362 22u
*C363
22u
*Q351
*Q353
*Q354
*Q704
*Q901
*Q902
*Q903
*Q904
*R925
3.3k
*R923
3.3k
*R920
22k
*R919
33k
*R917
1.5k
*R907
100k
*R90
4
10k
*R903
1.5k
*R902
2.7k
*R708
6.8k
*R707
33k
*R373
680
*R360
47k
*R355
680
*R354
33k
*R353
100k
*R352
1k
*R351
1k
*R304
2.2k
*R144
NC
9
5
3
R
*
C
N
*C901
4u
*C166
NC
*C173
0.027u
*Q702
NC
*R918
10k
*C104
NC
*R104
NC
C3EBKY000028
IC611
1
E0
2
E1
6
SCL
7
*WC
3
E2
8
VCC
4
VSS
5
SDA
*D301
*C141
N
C
*C143
N
C
*R145
2.2k
*R901
560
*Q140
*R148
10k
*R149
680
*R124
10
*C10
3
NC
*R10
3
NC
*C16
7
1200p
*C17
1
0.027u
k
7
.
2
4
6
1
R
*
*P101
@valu
*Q141
B1ACGP000008
*D141
B0BC01800005
*R906
1
0
*Q905
L505
*R162
NC
*R159
470k
0
7
4
0
6
1
R
*
*C164
0.033u
*R169
47k
*C341
1000p
*R32
1
200
*R12
3N
C
REFERENCE
7XX : FOR DK/BT
3XX : POWER, CHARGE
5XX : BBIC
6XX : FLASH, EEPROM, KEY, LCD
6XX : FLASH, EEPROM, KEY, LCD
4XX : MIC, SP
1XX : TEL LINE
8XX : RF
Supply from HS
Backup CAP
DC Monitor
Caller ID
Bell detection
0.1u $KJQ998|$_1.35mm_max
+3.0V
C178
0.1u
Q171
R176
1k
C176
@Doub
1u
R172
680k
R175
3.9k
C175
560p
*R171
220
R178
1k
(1)
(2)
(3)
(4)
(5)
(5)
(6)
IC501
B1ABCE000009
p
72
KX-TG6811CAB/KX-TG6811CAM/KX-TG6812CAB/KX-TG6821CAB/KX-TG6821CAM/KX-TG6822CAB/KX-TGA681RUB/KX-TGA681RUM
13.3. Base Unit (Operation) (KX-TG6821 only)
KX-TG6821 SCHEMATIC DIAGRAM (Base Unit (Operation))
13.4. Base Unit (TAM Counter) (KX-TG6821 only)
KX-TG6821 SCHEMATIC DIAGRAM (Base Unit (TAM Counter))
MSG2
1
2
MSG1
1
2
SKIP
1
2
DOWN
1
2
RPT
1
2
UP
1
2
LED_VDD
MSG_LED
A
K
MSG3
1
2
MSG4
1
2
KEYS_E
LOCAT/INT
1
2
ANS
1
2
ERASE
1
2
1
8
KEYIN1
KEYIN2
KEYIN3
KEYS_C
KEYS_D
LED901
CNT_VDD
CNT_RST
1
5
CNT_GND
I2C_SCL
I2C_SDA
RESET
E1
SDA
VDD
SCL
GND
1
2
3
5
4
RESET
SDA
VDD
SCL
GND
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