Panasonic KX-TCD450 Series Service Manual page 89

R12
(1)
0
C8
NC
R13
NC
Q4
NC
NC
R11
NC
(2)
+2.65V
VBACK
(3)
(4)
76 DSPIN/P1.0
77 A8
78 DSPOUT/P1.1
(5)
79 A14
80 DSPCLK/P1.2
81 A11
82 DSPFRM/P1.3
83 OERAQ
84 VSS
(6)
85 VDD
86 A2
(7)
87 P0.0
88 P0.1
89 CSRAQ
(8)
90 P0.2
91 P0.3
92 D4
93 P0.4/TXD
94 P0.5/RXD
95 P0.6
(9)
96 D6
97 P0.7
98 D5
99 ANT1
100 ANT2
(10)
(11)
(12)
(13)
(14)
(15)
ON-HOOK: 0V
OFF-HOOK: about DC 9.8V
ON-HOOK: 0V
OFF-HOOK: about DC 3.9V
TP50
D3
Q6
R21
R18 C13
NC
3.9K
100K
K1.0
Q5
R14 K0.22
NC
C9
NC
R55
R15 NC
C12
K0.47
C21
D10P
TX-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
IC2
BREF 39
NC 38
AOP 37
AON 36
NC 35
VSSA 34
VDDA 33
NC 32
LRB 31
VDDLR 30
29
NC
XTAL 28
LOAD 27
NC 26
FREQ 10.368MHZ
1V
+2.65V
R57 10K
R25
150
Q7
R27
2.2K
C14
J100P
C42
RX-AF
R32
56
TP189
TP188
R38 33
TX-DATA
RX-DATA
KX-TCD450RUM/RUT SCHEMATIC DIAGRAM (BASE UNIT)
89
KX-TCD450RUM / KX-A145RUM / KX-TCD450RUT / KX-A145RUT
VBACK +2.65V
J101
1
J102
1
J103
1
J104
1
J105
1
C86
DA1 C84
NC
C54 2.7n C58 1.8n
C1P
R66
C83
39
C1P
R67
39
C2P
C81
1 GND
GND 28
2 GND
VCC_PA 27
3
GND 26
GND
4
PAON 25
TXDA
5 RSSI 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
L8 1.8n
TP1
C91 C1P
L1 4.7u
10.368MHZ burst
: No Components
'SDA'
'SCL'
peak
+3.1V