Toshiba D-R5SU Service Manual - Page 21
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5-4-7. ATAPI Interface Circuit Diagram
DRVRST-
ATDMARQ
ATIOW-
ATIOR-
ATIORDY
ATDMACK-
ATINTRQ
ATDA1
ATDA0
ATCS0-
D5V
RP20
22RX4
8
1
A
T
D
D
5
A
T
C
D
D
5
7
2
A
T
D
D
1
0
A
T
C
D
D
1
0
6
3
A
T
D
D
4
A
T
C
D
D
4
5
4
A
T
D
D
1
1
A
T
C
D
D
1
1
8
1
A
T
D
D
1
2
A
T
C
D
D
1
2
7
2
A
T
D
D
3
A
T
C
D
D
3
6
3
A
T
D
D
2
A
T
C
D
D
2
5
4
A
T
D
D
1
3
A
T
C
D
D
1
3
22RX4
RP19
D5V
R4
R2
R88
1K
1K
1K
TP51
D
R
V
R
S
- T
TP56
TP58
TP60
TP62
TP64
TP65
RP4
22RX4
8
A
T
D
M
A
R
Q
7
A
I T
O
W
-
6
A
I T
O
- R
5
A
I T
O
R
D
Y
A
I T
O
R
D
Y
1
8
A
T
D
M
A
C
- K
A
T
D
M
A
C
- K
2
7
A
T
N I
T
R
Q
3
6
A
T
D
A
1
4
5
A
T
D
A
0
RP1
22RX4
A
T
C
S
- 0
R58
R11
5.6K
D5V
GND
1
A
T
C
D
D
7
2
A
T
C
D
D
8
3
A
T
C
D
D
6
4
A
T
C
D
D
9
22RX4
1
A
T
C
D
D
1
2
A
T
C
D
D
1
4
3
A
T
C
D
D
0
4
A
T
C
D
D
1
5
22RX4
TP43
A
T
C
D
M
A
R
Q
TP44
A
T
C
I D
O
W
-
TP45
A
T
C
I D
O
- R
TP46
A
T
I C
O
R
D
Y
TP47
A
T
C
D
M
A
C
- K
TP48
A
T
C
N I
T
R
Q
TP49
A
T
C
D
A
1
TP50
A
T
C
D
A
0
TP52
CN504
HEADER 20X2
TP54
1
2
D
R
V
R
S
- T
3
4
A
T
C
D
D
7
5
6
A
T
C
D
D
6
7
8
A
T
C
D
D
5
9
10
A
T
C
D
D
4
11
12
A
T
C
D
D
3
13
14
A
T
C
D
D
2
15
16
A
T
C
D
D
1
17
18
A
T
C
D
D
0
19
20
1
21
22
A
T
C
D
M
A
R
Q
2
23
24
A
T
C
I D
O
W
-
3
25
26
A
T
C
I D
O
- R
4
27
28
A
T
I C
O
R
D
Y
29
30
A
T
C
D
M
A
C
- K
31
32
A
T
C
N I
T
R
Q
33
34
A
T
C
D
A
1
35
36
A
T
C
D
A
0
A
T
37
38
A
T
39
40
TP71
A
T
C
C
S
- 0
22R
8
A
T
D
D
7
7
A
T
D
D
8
6
A
T
D
D
6
5
A
T
D
D
9
RP6
8
A
T
D
D
1
7
A
T
D
D
1
4
6
A
T
D
D
0
5
A
T
D
D
1
5
RP5
ATDD[0..15]
TP53
TP55
TP57
A
T
C
D
D
8
TP59
A
T
C
D
D
9
TP61
A
T
C
D
D
1
0
TP63
A
T
C
D
D
1
1
A
T
C
D
D
1
2
A
T
C
D
D
1
3
A
T
C
D
D
1
4
A
T
C
D
D
1
5
TP66
TP67
R78
0R
TP69
TP68
TP70
R7
22R
C
D
A
2
A
T
D
A
2
R56
22R
C
C
S
- 1
A
T
C
S
- 1
ATDA2
ATCS1-
Fig. 5-5-11