DVR-640H-S
14
1
2
4
1
2
3
4
C
D
F
A
B
E
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
3.1.1 OVERALL BLOCK DIAGRAM
video
selector
LA73031V
audio
selector
electric VR
BD3823FV
Terestrial Tuner
tuner control
µ
CON
LC87F05J2A
15MHz
SCL/SDA
TEXTV
JUST
CLOCK
RESET IC
CVBS/Y
BATT
V1
V3
video
driver
BH7868FS
L3
R3
input 1
L1
R1
L
R
TUJB
CVBS
SS T to M
HS T to M
SS M to T
HS M to T
ASCK
UV_ R
UV_ L
UV_V
output
L
R
C
Yp
Cb
Cr
Y
P_CONT2
AMUTE1
VMUTE
XRESET
32.768kHz
MRST
31
6
10
17
21
19
25
13
15
16
34
8
28
9
30
11
4
27,28
66
1
3
2
9
12
57
5
69
29
96
79
99
6
100
21
81
31
FLCLK
FLSTB
FLDATA
IR
7
FL DRV
C
35
23
32
7
Y/C
Y/C1
FL TUBE
IR
receiver
L2
R2
Y/C3
input 3
FLKY
AMUTE2
CN401
CN101
34
~
38
SPDIFO
output
Coaxial
output
C
A
B
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TEL 13942296513
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Q
Q
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