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(14)
+2.65V
10K
R84
IC4
A11
1
32
A11
0E
A09
2
31
A9
A10
A08
3
30
A8
CE
A13
4
29
A13
D7
A14
5
28
A14
D6
A17
6
27
A17
D5
7
26
WR
D4
8
25
VCC
D3
A18
9
24
A18
GND
A16
10
23
A16
D2
A15
11
22
A15
D1
A12
12
21
A12
D0
A07
A00
13
20
A7
A0
A06
A01
14
19
A6
A1
A05
A02
15
18
A5
A2
A04
A03
16
17
A4
A3
R12
0
C8
NC
R13
NC
NC
Q4
NC
C9
NC
R11
NC
R15
C21
D10P
+2.65V
VBACK
R37 0
76 DSPIN/P1.0
A08
77 A8
R36 0
78 DSPOUT/P1.1
A14
79 A14
73:VSS(T_DSPCLK)
R39 0
80 DSPCLK/P1.2
72:VBACK/P1.5
A11
81 A11
R40 0
82 DSPFRM/P1.3
83 OERAQ
84 VSS
85 VDD
A02
86 A2
IC2
87 P0.0
88 P0.1
89 CSRAQ
90 P0.2
91 P0.3
92 D4
93 P0.4/TXD
94 P0.5/RXD
95 P0.6
96 D6
97 P0.7
98 D5
99 ANT1
100 ANT2
+2.65V
10K
S1
3
4
R58
2
1
ON-HOOK: 0V
OFF-HOOK: about DC 9.8V
TP50
D3
Q6
R18
R21
C13
3.9K
100K
K1.0
Q5
C14
R14
K0.22
NC
NC
R55
NC
C12
K0.47
RX-AF
+2.65V DC
+2.65V
TP187
6.3V10
NC
50
AD3
49
AD2/(MPCINP)
48
NC
47
ADRSSI
46
ADREF
45
NC
44
AIN
43
DLN
42
NC
41
DLP
40
BREF
39
NC
38
AOP
37
AON
36
NC
35
VSSA
34
VDDA
33
NC
32
LRB
31
VDDLR
30
NC
29
XTAL
28
LOAD
27
NC
26
+2.65V
R57
10K
KX-TCD455GM SCHEMATIC DIAGRAM (BASE UNIT)
ON-HOOK: 0V
OFF-HOOK: about DC 3.9V
R25
390
NC
Q7
R27
NC
J100P
C42
TX-AF
R32
56
TP189
FREQ 10.368MHZ
C86
NC
C54
1V
R66
39
R67
39
TP188
R38
33
TX-DATA
L8
1.8n
C91 C1P
VBACK
+2.65V
J101
1
J102
1
J103
1
'SDA'
J104
'SCL'
1
J105
1
DA1
C84
C58 1.8n
2.7n
C1P
C83
C1P
C2P
C81
GND
1
GND
28
2
GND
VCC_PA
27
3
GND
GND
26
4
PAON
25
TXDA
5 RSSI
PSEL
24
IC3
6 VCC_OC
GND
23
GND
7
GND
22
8 SYCL
GND
21
9 SYDA
RXDA
20
10 SYEN
GND
19
11 GND
GND
18
RX-DATA
TP1
L1
4.7u
10.368MHZ burst
428 s
406 s
peak
+3.1V
: No Components
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