Panasonic KX-FG2452CX Service Manual page 229

(1)
RF OSC BUFFER
C818
R818 560
100n
R819
C817
(2)
39k
100n
R820
Q802
1.8k
(3)
TCK TDO TDI TMS
RA801
4.7k
81
DGPIO14/CD14
82
DGPIO13/CD13
83
GND_
DGPIO12/CD12
84
DGPIO11/CD11
GND
85
DGPIO10/CD10
86
CH DGPIO9/CD9
VCC
87
DGPIO8/CD8
88
DGPIO7/CD7
89
VCC_
R827 DGPIO6/CD6
90
DGPIO5/CD5
91
NC
DGPIO4/CD4
UTX
92
DGPIO3/CD3
93
DGPIO2/CD2
94
URX
DGPIO1/CD1
95
C826 DGPIO0/CD0
96
GND5
97
VCC3
98
100n
DRDN/CGPIO12
99
DWRN/CGPIO13
100
(4)
AGPIO0
R828
/CA0
NC
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
R830
(13) BELL_TX
CHARGE
CH_CTL
CBUSY1
S_ENB
CBUSY2
SDATA
SLE
SCLK
SDIO
RF_2.5V_ RF_2.5V
IC804
RF_2.5V
1
Vout
2
NC1
3
GND
C803
4
Cn
470p
C820
3p
IC801
0
R834 10k
R836 180
R833 180
R840 180
R842 47
R843 100
8
Vin
7
NC3
6
NC2
5
Cont
RST
TXD
RSSI
VCCPLL
X801
13.824MHz
NC
R806
C867
50
VCCPLL
49
GNDPLL
NC
48
VCCR
47
RSSI
46 C868 100n
VREFR
45
TXMOD
44
GNDR C864 10u
43
MIP VREF
42
6.3
MIN
41
VREF
40
C865 100n
HSMIN
39
HSMIP
38 C870 NC
GNDA
37
VCCA
36
LIN0
35
DCIN0
34
LOUT0
33
HSSPOUT
32
VCCPA
31
SPOUTN
IC806
1 16
A/B VCC
2 15
1A G(ENB)
3 14
1B 4A
4 13
1Y 4B
5 12
2A 4Y
6 11
2B 3A
7 10
2Y 3B
8 9
GND 3Y
R848
100
KX-FG2452CX: Digital Board_Cordless Base
229
H/S TX
H/S RX +4V
+3.3VC
+3.3VC
IC802
VCC 3.3V
VIN
VOUT
5 4
VDET
NC2
6 3
*RESET
GND
C801 7 2
NC1
CD
8 1
100n
Q801
+3.3VC
R864 C874
1k
100n
R861
0
C876
R865
5.6k
47n
R862
C873
C877
2.2k 100n 0
R853 0 CSI
R852 0 CCLK
R854 100
CSO
KX-FG2452CX
ALC
CH_CTL
CH_CTL
CHARGE
CHARGE
CSI
CSI
CSO
CSO
CCLK
CCLK
CBUSY1
CBUSY1
CBUSY2
CBUSY2
CRESET
CRESET
S_ENB
S_ENB
HSRX
HSTX
C_IN
BELL_TX
BELL_TX