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(1)
C8
N.M.
Q4
N.M.
R11
N.M.
(2)
(3)
(4)
(5)
(6)
+2.65V DC
+2.65V
TP187
6.3V10
(7)
(8)
(9)
33 PX.0
34 PX.1
35 PX.2
36 PX.3
(10)
37 VDD
38 VSS
39 SUPEEP
(11)
40 I2DAT
41 I2CLK
(12)
42 MODE
VBACK
43 R2
(13)
R33
44 R1
45
NC
46
47
48 VDD
(14)
(15)
3
2
ON-HOOK: 0V
OFF-HOOK: about DC 9.8V
TP50
R12
0
D3
Q6
R18
R13
NC
N.M.
3.3K
Q5
R14
N.M.
C9
N.M.
R15
N.M.
C12
K0.47
C21
D10P
R32
56
TX-AF
D5
FREQ 10.368MHZ
1V
+2.65V
VSSO
16
VDDPM
15
RESETQ
14
VSS
13
VDD
12
SYRI
11
PAON
10
IC2
TXDA
9
SYCL
8
SYDA
7
45:VBACK/P1.5
SYEN
6
46:VSS(DSPCLK)
RXDA
5
47:P1.4(TONE)
RXDSG
4
DRON
3
VSS
2
VDD
1
+2.65V
10K
S1
4
R58
1
ON-HOOK: 0V
OFF-HOOK: about DC 3.9V
R25
220
D6
N.M.
C79
N.M.
N.M.
Q7
R27
R21
C13
C80
100K
0
K1.0
N.M.
C14
K0.22
NC
R55
RX-AF
KX-TCD412NZM SCHEMATIC DIAGRAM (BASE UNIT)
R66
39
R67
39
TP188
TX-DATA
R38
33
RX-DATA
+2.65V
VBACK
J101
1
J102
1
J103
1
'SDA'
J104
'SCL'
1
J105
1
C58
DA1
C54
C6P
C2P
N.M.
C83
1
28
GND
GND
GND
2
VCC_PA
27
3
GND
26
GND
4
25
TXDA
PAON
5 RSSI
PSEL
24
6 VCC_OC
GND
23
IC3
22
7
GND
GND
8 SYCL
GND
21
9 SYDA
RXDA
20
19
10 SYEN
GND
11
GND
GND
18
TP1
L1
4.7u
10.368MHZ burst
428 s
406 s
peak
+3.1V
: No Components
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