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IC6
1
44
Vss
Vcc
CLE
2
43
CLE
CE
ALE
+3.2V
3
42
ALE
RE
4
41
WE
R/B
5
40
WP
GND
6
39
N.C
N.C
7
38
N.C
N.C
8
37
N.C
N.C
9
36
N.C
N.C
10
35
N.C
N.C
11
34
12
33
13
32
N.C
N.C
14
31
N.C
N.C
15
30
N.C
N.C
16
29
N.C
N.C
17
28
N.C
N.C
DAB0
18
27
I/O0
I/O7
DAB1
19
26
I/O1
I/O6
DAB2
20
25
I/O2
I/O5
DAB3
21
24
I/O3
I/O4
22
23
Vss
Vcc
(1)
(2)
(3)
(4)
+3.2A
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
C66
K0.1u
+3.2V
AD17
IC8
AD16
AD15
ACS1
1
8
1A
VCC
AD14
WRN
AD13
2
7
1B
1Y
AD12
AD11
3
6
2Y
2B
AD10
AD9
4
5
GND
2A
+3.2V
AD18
AD8
AD7
AD6
AD5
AD4
DAB7
AD3
Q13
AD2
DAB6
DAB5
AD1
+3.2V
DAB4
+3.2V
+3.2V
IC7
1
48
A16
A15
2
47
A14
NC
3
46
A13
0V
VSS
DAB15
4
45
A12
DQ15
DAB7
5
44
DQ7
A11
DAB14
6
43
DQ14
A10
DAB6
7
42
+3.2V
A9
DQ6
DAB13
8
41
A8
DQ13
DAB5
9
40
NC
DQ5
DAB12
10
39
NC
DQ12
DAB4
11
38
WE
DQ4
12
3.2V
37
NC
VDD
DAB11
13
36
NC
DQ11
DAB3
14
35
NC
DQ3
DAB10
15
34
NC
DQ10
DAB2
16
33
NC
DQ2
DAB9
17
32
A17
DQ9
DAB1
18
31
A7
DQ1
DAB8
19
30
A6
DQ8
DAB0
20
29
A5
DQ0
21 A4
28
OE
22 A3
27
VSS
0V
23 A2
26
CE
24 A1
A0
25
SP Phone_TX
C303
J100P
R290
18K
+4.0BV
OUT
-IN
4
3
V-
2
V+
+IN
5
1
IC15
R84
1K
R64
1K
R55
SP Phone_RX
Audio
Tone
10.368MHz burst
RX-DATA
KX-TCD540NZM: SCHEMATIC DIAGRAM (BASE UNIT)
IC12
TP110
1
20
OE
Vcc
3.2V
DAB15
2
19
D0
Q0
D200
DAB7
ROW0
3
18
D1
Q1
DAB14
4
17
D2
Q2
D201
DAB6
5
16
ROW1
D3
Q3
DAB13
6
15
D4
Q4
D202
DAB5
ROW2
7
14
D5
Q5
D203
DAB12
8
13
ROW3
D6
Q6
D204
DAB4
9
12
ROW4
D7
Q7
10
11
0V
GND
CK
IC13
1
20
OE
Vcc
3.2V
D205
DAB11
ROW5
2
19
D0
Q0
DAB3
3
18
D1
Q1
DAB10
4
17
D2
Q2
DAB2
LED4
5
16
D3
Q3
DAB9
LED3
6
15
D4
Q4
DAB1
LED2
7
14
D5
Q5
DAB8
8
13
D6
Q6
DAB0
LED5
9
12
D7
Q7
10
11
0V
GND
CK
Audio
Handset RX
Handset RX
Audio
Audio
Tone
Tone
Handset TX
Audio
R285
C295
R283
K0.1u
10K
1K
C296
R286
R284
C305
10K
K0.1u
1K
+4.0BV
R287
K0.1u
R288
100K
100K
1K
IC10
1
8
CD
Vout2
2
7
+Vref
GND
3
6
+Vin
V+
4
5
-Vin
Vout1
C223
K220P
C225
R223
R220
120K
K0.1u
39K
TP47
TX-DATA
TP39
TP46
TP45
C82 C2P
+4.0AV
TP44
C62
12 RXDSG
GND
34
13 SYRI
RF1
33
14 GND
GND
32
1N8
RFM1
15 GND
GND
31
16 GND
GND
30
17 GND
GND
29
C83
+4.0AV
N.M.
C71
C2P
K4.7u
C73
+3.2V
+3.2V
CS
RES
+3.2V +3.2A
+3.2A
TP60
MIC1
R281
R265
0
33R
+3.2A
+4.0BV
R282
HANDSET
33R
TP100
1
TP101
1
TP102
1
TP103
1
TP104
1
JTIO
TP105
1
URX
TP106
1
UTX
TP107
1
GND
C271
+4.0BV
220u/10V
TP109
1
SP-
TP108
1
SP+
C58
ANT1
C57
C59 C2P
1
D10P
D10P
C86
C85
R91
N.M.
N.M.
180R
R92
180R
TP50
C64
C6P
ANT2
C323
1
0
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