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Service Reference Guide, dx7300 433611-001 A–5
Connector Pin Assignments
ATA/ATAPI (IDE) Standard Drive Cable
Connector
Pin Signal Pin Signal Pin Signal
1
2
3
4
5
Reset
Ground
DD7
DD8
DD6
15
16
17
18
19
DD1
DD14
DD0
DD15
Ground
29
30
31
32
33
DMAK
Ground
INTRQ
IOCS16
DA1
6
7
8
9
10
DD9
DD5
DD10
DD4
DD11
20
21
22
23
24
(Key)
DMARQ
Ground
DIOW
Ground
34
35
36
37
38
PDIAG (cable detect)
DA0
DA2
CS1FX
CS3FX
11
12
13
14
DD3
DD12
DD2
DD13
25
26
27
28
DIOR
Ground
IORDY
CSEL
39
40
DASP
Ground
CD-ROM 50-Pin Connector
Connector
Pin Signal Pin Signal Pin Signal Pin Signal
1
2
3
4
5
Audio L-ch
Audio R-ch
Audio GND
GND
RESET-
14
15
16
17
18
DD12
DD3
DD13
DD2
DD14
27
28
29
30
31
IORDY
DMACK-
INTRQ
IOCS16-
DA1
40
41
42
43
44
+5V
+5V
+5V
GND
GND
6
7
8
9
10
DD8
DD7
DD9
DD6
DD10
19
20
21
22
23
DD1
DD15
DD0
DMARQ
GND
32
33
34
35
36
PDIAG-
DAO
DA2
CS1FX-
CS3FX-
45
46
47
48
49
GND
GND
CSEL
GND
Vendor-specific
11
12
13
DD5
DD11
DD4
24
25
26
DIOR-
DIOW-
GND
37
38
39
DASP-
+5V
+5V
50 Vendor-specific