Panasonic KX-TG2873BXS

74
KX-TG2873BXS/KX-TGA280BXS
13.6. Schematic Diagram (Cordless Handset)
+1.8V +2.5V
+1.8V
VBAT
+2.5V
VDDPA
VBAT
UTXURXGND
LED2 LED3 LED4
Q500
Q501
D501
J2
1
BATTERY-
J1
1
BATTERY+
CHG+
J3
1
CHARGE+
CHG-
J4
1
CHARGE-
D1
VBAT
C6
K1u
C14
( )
NC
C71
( )
NC
C70
( )
NC
K0.01u
C10
C502
( )
NC
C13 K0.22u
K0.01u
C3
( )
C500
NC
C503
K1u
C501
K0.1u
K0.01uC9
C300
K0.1u
R83
1K
R301
56
R6
( )
NC
R71
100
R500
1K
R504
0.22 1/8W
R503
470
R502
10K
R75
1K
R72
1K
R73
10K
R505 5.6K
R70
1K
R74
10K
R506 5.6K
R82
1K
R81
1K
R501
220K
R84
1K
R80
1K
JTAG
IC1
1
INT1n/P1[1]
2
VDDIO2
3
VDD3
4
VSS4
5
LED1/PWM0/P2[0]
6
LED2/PWM1/P2[1]
7
LED3
8
LED_BIAS/P3[6]/PD6
9
SDA1/P2[5]
10
SCL1/P2[4]
11
INTn5/VDDE/P1[5]
12
INT2n/P1[2]
13
AVD
14
AVS
15
CAP
16
Xtal1
17
VSSRF
18
RFCLKp
19
PSSI/RFCLKm
20
VDDRF
21
RFCLKd
22
TDO
23
RDI
24
SK
25
PD1/SIO
26
LE
27
P3[1]/PD1
28
P3[2]/PD2
29
VSSPA29
30
PAOUTm
31
VDDPA
32
PAOUTp
33
VSSPA33
34
P3[3]/PD3
35
P3[4]/PD4
36
TDOD/P3[5]/PD5
37
VSS37
38
VDDIO38
39
VDD39
40
PCM_FSC/INT0n/P1[0]
41
P0[0]/UTX
42
P0[1]/URX
43
P0[2]/JTIO
44
P0[3]/SDA2
45
P0[4]/SCL2
46
P0[5]/SPICLK/PCM_CLK
47
P0[6]/SPIDO/PCM_DOUT
48
P0[7]/SPIDI/PCM_DIN
49
VSS49
50
VDD50
51
P2[3]/ADC1
52
P1[7]/CHARGE/INT7
53
RSTn
54
DC_stab
55
DC_I
56
DC_CTRL
57
DC_Sense
58
VBAT1
59
LDO1_CTRL
60
LDO2_CTRL
61
P1[6]/PON/INT6
62
P2[6]/stop_charge
63
LDO1_Sense
64
AVS2
65
AVD2
66
LSRn/REF
67
LSRp/REF
68
MICn
69
VREFm
70
VBUF
71
AGND
72
MICp
73
VREFp
74
P3[0]
75
P1[4]/INT4n
76
P1[3]/INT3n
77
P2[2]/CLK100
78
AVS_sense
79
ADC3
80
ADC0
C11
K1u
K0.01u
C8
( )
C400
NC
K0.01uC1
K0.01uC2
R7
( )
NC
( )
C403
NC
LED1
VBAT
LED6 LED5 LED7 LED8
DG DG
DG
DG
DG
DG
DG DG
DG
DG
DG
DG
DG
( )
C301
NC
R2
100
DG
DG
DG
DG
C202
( )
NC
CA200
NC
1 2 3 45
6 7 8
+2.5V
DG
DG
C201
( )
NC
C203
( )
NC
L1 68n
C504
( )
NC
DG
AG
RFG
R5 270
PCM-DO
DG
PCM-FO
PCM-CK
R300
0.1 1/8W
Q300
( )
C200
NC
C4 K0.1u
C5 K0.1u
( )
R200 NC
C209 K0.1u C210 K0.1u C211 K0.1u C212 K0.1u
X1
10.368MHz
R100
100
R101
100
R102
100
R103
100
R107
47
( )
R202
NC
( )
R201
NC
K0.01u
C15
C61
J12p
( )
R205 NC
( )
R208 NC
0R207 0R206
C16
K4.7u
CN200
1
NC
2
NC
3
NC
4
/CS
5
/RES
6
RS
7
SCL
8
SI
9
VDD
10
VSS
11
VOUT
12
CAP3+
13
CAP1-
14
CAP1+
15
CAP2-
16
CAP2+
17
V1
18
V2
19
V3
20
V4
21
V0
22
NC
R104
27
R105
27
R106
27
L300
22u
D300
UP
DOWN
RIGHT
LEFTFunc1 Func2
VOICE
SP
K0.1uC213
R60
1M
C60 J18p
INT
R3
470
R4 470
L2
3 6 9 #
2 5 8 0*
7 4 1
R204 0
1K
R89
1K
R88
1K
R87
1K
R86
1K
R85
C12 K1000p
Q502
L502
L503
K1u
C208
K1u
C207
K1u
C206
K1u
C205
Q100
Q101
C505
K1u
RSSI
RXDA SYEN TXDA SYCL SYDA
COL3
ROW2
ROW1
ROW3
RXDSG PAON LCD_LED CD_AMP
COL0
JTAG
UTX
URX
JTAG
COL1
LCD_RESET
LCD_SCL
LCD_SI
LCD_RS
LCD_CSB
ROW4
WP
COL4
WP
ROW0 ROW2 ROW3 ROW4
LCD_LED
STOP_CHARGE CHARGE
DC_I
DC_CTL
LCD_RESET
SYRI
COL2
ROW0
URX
UTX
LCD_CSB
LCD_SCL
LCD_SI
LCD_RS
ROW1
COL4
COL3
COL1
COL2
COL0
LCD Back-Light
Ringer LED
IntercomFLASH
HOLD
TALK
KEY Back-Light
OFF
Land for soldering
For Battery terminal
For Charge
terminal
For LCD
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
NC: No Components
TX (cordless handset)
RX (cordless handset)