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DPA-300
Q Q
3 7 6 3 1 5 1 5 0
6-8.
BLOCK DIAGRAM — VIDEO IN SECTION —
VIDEO IN
SWITCH
J102
IC201
4FSC CLOCK
Q401
GENERATOR
1
VIDEO IN
Q403
7
26
V2 IN
3
LOGIC
CTLA
2
J101
Y BUFFER
3
Q407
Q407
S VIDEO
RV403
IN
4
S INPUT
Y LEVEL
C BUFFER
Q410
FRONT-END
IC104
17
AI31
54
.
13
AI41
DY0
53
.
50
DY7
45
19
AI22
T E
L
15
AI32
1 3 9 4 2 2 9 6 5 1 3
DUV0
62
DUV7
55
X101
. 65
XTALI
LLC2
30
26.798MHz
66
XTAL
1
HSYNC
38
2
4
VSYNC
41
5
12
ODD/EVEN
40
13
NAND GATE
6 5
• Signal Path
: CHROMA
: Y
: VIDEO
16
w w w
IC402
Q404,421
VO1
30
Q406
Q405
Q408
BURST
Y
H SYNC
GATE
C IN
8
2
22
23
SEP.
PULSE
4FSC OUT
32FH
14.3M
5
11
X401
X402
500kHz
14.3MHz
Y BUFFER
Q419,420
JPEG
ENCODER/DECODER
30
IC105
27
Y0-7
.
24
DCT/IDCT
21
ENCODER
PIXEL
AND
AND
I/F
39
Q/Q-1
DECODE
35
C0-7
.
33
31
98
MCLK
DRAM I/F
3
42
HBLK
AND
CONTROL
6
43
VBLK
11
44
ODV/EVEN
V/H SYNC
.
.
.
IC103
52 53 54 65 73
83 87 90
93
64 59 56
55
74 81
.
27 13 14 28 29
16 19 22
26
A0
A8
2
DQ1
5
.
7
DQ8
DRAM
10
IC101
31
DQ9
34
.
37
DQ16
39
x
a o
.
i
— 41 —
http://www.xiaoyu163.com
DIGITAL COMB FILTER,
Y/C SEP
IC401
AY0
AD IN
A/D
D/A
Y BUFFER
25
31
CONV.
CONV.
Q408.411
BGP O
20
17
CLPI
VCC
33
BGP I
19
17
11
OCLK
ADAPTIV
CY0
D/A
C BUFFER
FILTER
39
CONV.
Q409,412
OPRATION
62
D0
13
14
HOST
D0-7
I/F
20
Q
7
Q
D7
3
7
HA0
. 6
. 2
HA0
.
.
7
1
HA1
HA1
VIDEO INPUT
CONTROL MICOM
IC108
WR
3
5
WR
RD
4
4
RD
CS
5
3
CS
RSTI
1
6
RSTO
DACK
64
8
DACK
DREQ
10
46
DREQ
INT
11
45
INT
.
.
50 51
13 15
29
31
50 49
X102
16MHz
.
14 28 29
27 13
16 19 22
26
A0
A8
2
DQ1
5
.
7
DQ8
DRAM
10
IC102
31
DQ9
34
.
37
DQ16
39
u 1 6 3
y
http://www.xiaoyu163.com
2
4
8
9
9
Y INPUT
SELECTOR
IC203
1
Y BUFFER
7
Q416
3
RV402
2
Y OUT PUT
Y BUFFER
LEVEL
Q414
C INPUT
SELECTOR
IC202
1
C BUFFER
7
Q415
3
2
C BUFFER
Q413
61
DATA-BUS BUFFER
IC110
HD0
22
2
A1
B1
18
6
3
1
5
1
5
0
8
9
HD7
15
9
A8
B8
11
DIR
1
I/O SEL
37
HSTBI
41
IC109
IC106
4
9
6
HHDET
39
8
5
10
IC106
12
11
HCLR
38
13
27
36
NAND GATE
INVERTER
IC106,109
BUZZER CONT.
IC111
BUZZER
BZ101
SWITCH
6
BUZZER
Q103
m
c o
.
— 42 —
2
8
9
9
VIN Y
U
VIDEO
OUT
SECTION
(Page 40)
VIN C
2
4
9
8
2
9
D0-7
9
B+
IC109
IC109
1
3
12
S
2
11
13
VIN BUSY
IR
SECTION
(Page 37)
HOST STB
RST
O
VIDEO
PROCESS
1
BEEP
SECTION
(Page 35)
I
V SYNC
VIDEO
CONTROL
SECTION
(Page 33)
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