7-2
DTV Block Diagram
L3821BLD
MAIN CB
A
DIGIT
AL CB
A
IC253
(DEMODULA
T
OR)
IC201
(DDR SDRAM)
IC252
(A
UDIO D/A CONVER
T
ER)
IC101
(MPEG DECODER)
Q243
Q244
Q245
Q251
DEMODULA
T
OR
TU11
CN102
CN902
CN101
CN901
CN102
CN902
CN101
CN901
CN101
SCL
SD
A
DTV
-S-REQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
SCL
SD
A
DTV
-S-RESET
DTV
-S-REQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
CN901
11
12
10
5
6
7
8
34
56
51
55
91
90
42
43
59
1
7
11
8
2
3
16
15
14
13
D-IF1
11
D-IF2
12
D-IF-A
GC
D-IF-A
GC
9
TU-SCL
4
VIDEO
ENCODER
MPEG-2
DECODER
VIDEO
INTERF
A
C
E
SERIAL
DECODER
RESET
AU
D
IO
INTERF
A
C
E
A
UDIO D/A
CONVER
T
ER
D
A
T
A
B
US (D0-D15)
ADDRESS B
US (A0-A12)
T
O
IF/VIDEO
BLOCK
TO
A
U
D
IO
BLOCK
JK742
DIGIT
AL-
A
U
DIO-OUT
(CO
AXIAL)
TO
SYSTEM
CONTR
OL
BLOCK
DTV
-Y
DTV
-Cb
DTV
-Cr
DTV
-A
UDIO(L)
DTV
-A
UDIO(R)
A
UDIO-MUTE
(L-CH)
(R-CH)
A
UDIO
-MUTE
AA12
Y12
W13
W4
Y3
AA3
AA16
Y17
AA18
AA6
Y7
W7
AA5
W9
AA8
V9
Y6
V11
W3
Y2
AA2
B
U
FFER
B
U
FFER
B
U
FFER
A3-A8,A12-A17,
B4,B8,B12,B16
2,4,5,7,8,10,11,13,54,
56,57,59,60,62,63,65
E1,E2,F1,G1,H1,H4,
J1,J2,K1,K3,K4,L1,L2
28-32,
35-42
B
UFFER
VIDEO SIGNAL
IF SIGNAL
A
U
DIO SIGNAL
WF19
WF21
WF20
TU-SD
A
TU-SCL
TU-SD
A
D-IF1
D-IF2
D-IF-A
GC
TU-SCL
TU-SD
A
5
11
12
9
DTV
-Y
18
DTV
-Cb
20
DTV
-Cr
19
18
20
19
DTV
-A
UDIO(L)
15
DTV
-A
UDIO(R)
16
A
UDIO-MUTE
14
15
16
14
SPDIF
2
2
SCL
15
SD
A
14
15
14
DTV
-S-REQ
7
DTV
-S-SCLK
8
DTV
-S-SIN
9
7
8
9
DTV
-S-SOUT
10
10
4
5
WF18
WF13
DDR SDRAM
CONTR
O
LLER
WF17
WF16
WF14
WF15
DTV
-S-RESET
DTV
-S-RESET
12
12