NETWORK SYSTEM REMOTE MIC STATION
14
RM-N3000
Block Diagram
Block Diagram
P
o
E
M
odul
e
Po
E_
+
2
4
V
AD
P2
4
V
DC_
2
4
V
DC-DC
R
egul
at
or
R
egul
at
or
+5
V
D
+
3
V3
_
F
PG
A
+
1
V
8
_
F
P
G
A
+3
V
3
D
+
2
V5
_
F
PG
A
+
1
V5
_
F
PG
A
+
1
V0
_
F
PG
A
PH
Y
RJ
-4
5
RJ
-4
5
Audi
o Codec
I2
S
I2
C
FPGA
FRO
N
T
KEY I
N
PU
T
UA
RT
4G
B DDR3 MEMO
RY
e
MMC
S
D
CA
RD
RT
C
I2
C
DE
B
U
G
UA
RT
F
las
h m
e
m
o
ry
Q
SPI
CHI
M
E
I
C
M
O
NI
T
O
R A
M
P
MI
C
PR
E-
AMP
MI
C
I
N
PU
T
GP
IO
G
=
+
10dB
~
50dB
G
=
-10dB
~
0dB
CHI
M
E
A
M
P
AU
X I
N
PU
T
AU
X AMP
G
=
0dB
~
+
20dB
0.
1W
/
@
8
oh
m
s
In
te
rn
al
M
on
ito
r S
PK
-20 to 0d
B
u
Zi
=
3
k o
h
ms
-50 to -
10d
B
u
M
IC Det
e
c
tor Ci
rc
ui
t
GP
IO
A
u
d
io
le
v
e
l m
e
te
r
A
udi
o s
ig
DC_
2
4
V
Ne
tw
or
k Pr
imar
y
Ne
tw
or
k S
eco
n
d
ar
y
OL
E
D
DC-DC
DC-DC
DC-DC
DC-DC
PH
Y