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(1)
C48
R52
0.047u
18K
C14
R34
(2)
100n
180K
C13
R35
100n
27K
(3)
(4)
(5)
R29
2.2K
(6)
C10
100n
(7)
MIDI signal
(8)
(9)
IC10
2.7V
1
8
A0
VCC
2
7
A1
WP
3
6
A2
SCL
4
5
VSS
SDA
0V
(10)
(11)
(12)
(13)
(14)
(15)
(16)
SW1
DOWN
C
PUSH
P
(17)
COM
B
RIGHT
A
UP
D
LEFT
(18)
(19)
ROW3
ROW 2
TALK
ROW1
5
ROW0
(20)
(21)
+4V
IC2
1
8
CD
VO2
C86
1u
0V
C15
1u
2
7
FC2
GND
C80 2.2u
C16
100n
3
6
FC1
VCC
3.9V
21-25
4
5
VIN
VO1
R36
68K
C38
470P
C77
10P
Receiver
REV_TEST2
C42
R75
REV_TEST1
10u
0R
C95
N.M.
(2125)
L
R37
33R
MIC
R38
33R
R50
100R
0V (without Headset)
1V (with Headset)
P2
P3
P0
PANEL
PWM1
+2.7V
CLEAR
SOFT_A
1
SP
MAIL
4
8
9
6
3
2
0
R
INT
7
#
SP_TEST2
Speaker
SP_TEST1
+2.7V
R65
CN4
HEADSET JACK
N.M.
C43
1
N.M.
5
4
3
C70
2
100n
C41
N.M.
37 VIB
38 DrvGND
D2/SCLK
39 PANEL
40 PWM0
41 PWM1
42 PWM2
D5/TESTO
IC4
2.7V
43 PWM3
D7/TESTO
44 DVDD
0V
45 DGND
46 TEST1
47 PTESTIN2
48 RESET
PTESTO2
TP13
TP9
TP8
CLK
KX-TCA154AZM: SCHEMATIC DIAGRAM (CORDLESS HANDSET)
IC5
2.7V
1
8
1A
VCC
2
7
3Y
1Y
3
6
2A
3A
4
5
GND
2Y
0V
R51
1M
X2
+2.7V
R62
10k
0V
DGND
24
23
D3/ARQ
22
D4/SRQ
21
D5/ERQ
20
19
18
WR
17
RD
16
CS
15
ILE
14
13
+4V
TP2
TP1
TX-DATA
TXDA
RSSI
R55
TP6
TP5
TP4
TP3
10K
SYCL
SYDA
SYEN
RXDSG
SYRI
RXDA
PSEL
PAON
A201
TP15
GND
1
GND
28
GND
2
VCC_PA
27
3
GND
26
GND
4
PAON
25
TXDA
5 RSSI
4.2V
PSEL
24
6 VCC_OC
GND
23
IC3
7 GND
GND
22
8 SYCL
GND
21
9 SYDA
RXDA
20
10 SYEN
GND
19
11 GND
GND
18
L2
4.7uH
RX-DATA
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