Read Panasonic KX-NT400RU Service Manual online
6
KX-NT400RU
4 Technical Descriptions
4.1.
Block Diagram
M
AIN
P
C
B
RJ45
Vo
IP
L
S
I
RJ45
FL
A
S
H
4MByt
e
Sub
CP
U
SDRA
M
8MByt
e
JT
A
G
+12V
5.0V
RE
G
3.3V
RE
G
8.192MHz
25
M
H
z
BT mo
du
le
(op
ti
on)
AFE
L2SW
me
mo
ry
co
nt
ro
lle
r
PC
M
SD
co
nt
ro
lle
r
UA
RT
PC
M
SP
I
anal
o
g
anal
o
g
+5V
+5.5V
VD
D
_
C
O
R
E
V
D
D
_
D
33,
_A
33
BT
co
n
Jack
co
n
MIC
co
n
SP
co
n
Jac
k P
C
B
SP
MI
C
1.5V
REG
3.3V
D
C
/D
C
5.5V
D
C
/D
C
Po
E
MII2
MII1
USA
RT
2
USA
RT
1
A/
D
, D
/A
KE
Y
/LE
D
JT
A
G
MII2
MII1
SP
I
SIO
SIO
UA
RT
PI
O
GPI
O
SPI
LAN port
PC port
IF
P
C
B
PXA
270
MA
C/PHY
FL
AS
H
64MByt
e
AC
’9
7
Cod
e
c
SDRA
M
32MByt
e
JT
A
G
VBU
S
40pi
n
co
n
1.3V
REG
1.1V
REG
32
kH
z
13
M
H
z
25
M
H
z
4pi
n
co
n
L
E
Dd
rv
USB
ho
st
Mem
o
ry
C
o
n
tr
o
lle
r
I2
C
A
C
97
SD
co
nt
ro
lle
r
SSP1
FFU
AR
T
JT
A
G
A
C
97
LCD
USB
SD
VD
D
_
S
R
AM
VD
D
_
PLL
LCD
C
o
n
tr
o
lle
r
20pi
n
co
n
20pi
n
co
n
BT
UAR
T
SSP2
1.5V
D
C
/D
C
D3.3V
, A
3
.3V
VC
O
R
E
PW
M
PWM
LC
D /w
T.P.
mo
du
le
9.8
M
H
z
SD
R
A
M
32MByt
e
IC
101
IC
102
I
C
103
I
C
104
IC
107
X503
X501
X502
IC
118
IC
111
IC
120
IC1
IC3
X201
IC2
X1
IC5
IC4
X401
IC7
IC9
IC10
IC14
IC
123
IC
122
IC
112
IC
113
IC
114
CN6
CN1
JK2
JK1
CN4
CN5
CN16
CN15
CN14
CN2
CN3
CN4
USB
co
n
SD
co
n
KX-NT400R
U Bloc
k Diag
ra
m
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