15
Meridian 3
5. Block Diagram
5.1 Scaler Board
+
5
V_
SB
+5
V
_
S
B
0
2
.INP
U
T
2.
IN
P
U
T
RIN
GN
D
R
GI
N
G
NDG
BI
N
GN
D
B
HS
Y
N
C
VS
Y
N
C
DD
CA
_
S
DA
DD
CA
_
S
CL
RX
0
+
RX
0
-
RX
1
-
RX
1
+
RX
2
+
RX
2
-
RX
C-
RX
C+
DV
I_
S
D
A
DV
I_
S
C
L
D
E
T
_
VG
AI
DE
T
_
DV
II
DD
C_
WP
+5
V
_
S
B
VC
C
3
.3
+
5
V_
SB
+
5
V_
SB
VC
C
1
.8
04
.S
C
A
L
E
R
4.
S
C
AL
ER
RIN
GN
D
R
GI
N
GN
D
G
BI
N
GN
D
B
HS
Y
N
C
VS
Y
N
C
DD
CA
_
S
D
A
D
D
CA
_
S
CL
DV
I_
S
C
L
DV
I_
S
D
A
RX
0
+
RX
0
-
RX
1
+
RX
1
-
RX
2
+
RX
2
-
RX
C
+
RX
C-
DE
T
_
V
G
A
I
DE
T
_
DV
II
DD
C_
WP
HDM
I1
_
D2
+
HD
M
I1
_
D2
-
HD
M
I1
_
D1
+
HD
M
I1
_
D1
-
HDM
I1
_
D0
+
HD
M
I1
_
CK
+
HD
M
I1
_
CK
-
HDM
I1
_
D0
-
HD
M
I1
_
S
D
A
HD
M
I1
_
S
C
L
DE
T
_
HD
M
I
CE
C_
CT
RL
HD
M
I_
H
P
D
DDC
_
W
P
Mu
te
AO
U
T
_L
AOU
T
_
R
on
_P
an
e
l
on
_BA
C
KL
IG
H
T
Ad
j_B
AC
K
L
IG
H
T
VC
C
3
.3
VC
C
1
.8
PB
0
PB
1
PB
2
PB
3
PB
4
PB
5
PB
6
PB
7
PB
8
PB
9
PA
0
PA
1
PA
2
PA
3
PA
4
PA
5
PA
6
PA
7
PA
8
PA
9
+
5
V_
SB
SC
L_
Pa
ne
l
SD
A_
Pa
ne
l
Vo
lu
m
e
AI
N
_
L
AI
N
_
R
+
5
V_
SB
+
5
V_
SB
0
5
.P
A
N
E
L
INT
E
RFA
C
E
5
.PA
N
E
L
I
N
T
E
R
F
AC
E
+
5
V_
SB
PA
0
PA
1
PA
2
PA
3
PA
4
PA
5
PA
6
PA
7
PA
8
PA
9
PB
0
PB
1
PB
2
PB
3
PB
4
PB
5
PB
6
PB
7
PB
8
PB
9
on
_P
an
e
l
SC
L_
Pa
ne
l
SD
A_
Pa
ne
l
03.
H
D
M
I
3.
H
D
M
I
HD
M
I1
_
D2
+
HD
M
I1
_
D2
-
HD
M
I1
_
D1
+
HD
M
I1
_
D1
-
HD
M
I1
_
D0
+
HD
M
I1
_
D0
-
HD
M
I1
_
CK
+
HD
M
I1
_
CK
-
HD
M
I1
_
S
D
A
HD
M
I1
_
S
C
L
DE
T
_
HD
M
I
C
E
C_
CT
RL
HD
M
I_
H
P
D
DD
C_
WP
+
5
V_
SB
07
.P
O
W
ER
7.
P
O
W
E
R
Ad
j_B
AC
KL
IG
H
T
on
_B
AC
KL
IG
H
T
VC
C
1
.8
VC
C
3
.3
+
5
V_
SB
VC
C
3
.3
0
6
.A
U
D
IO
6.
A
U
D
IO
Mu
te
AO
U
T
_L
AO
U
T
_R
+
5
V_
SB
Vo
lum
e
AI
N
_
R
AI
N
_
L
VC
C
1
.8