Lenovo PC 300 Hardware Maintenance Manual (HMM) for Aptiva, IBM PC300, and Net - Page 138

IDE Cable Connector Signals

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IDE Cable Connector Signals Pin Signal Name 1 Host Reset 2 Ground 3 Host Data 7 4 Host Data 8 5 Host Data 6 I/O Pin Signal Name O 21 DMA Request N/A 22 Ground I/O 23 Host IOW I/O 24 Ground I/O 25 Host IOR 6 Host Data 9 7 Host Data 5 8 Host Data 10 9 Host Data 4 I/O 26 Ground I/O 27 I/O Channel Ready I/O 28 No Connection I/O 29 DMA Acknowledge 10 Host Data 11 11 Host Data 3 12 Host Data 12 13 Host Data 2 14 Host Data 13 15 Host Data 1 16 Host Data 14 17 Host Data 0 I/O 30 I/O 31 I/O 32 I/O 33 I/O 34 I/O 35 I/O 36 I/O 37 Ground Host IRQ No Connection Host A1 No Connection Host A0 Host A2 Host CS0 18 Host Data 15 19 Ground 20 No Connection I/O 38 Power 39 N/A 40 Host CS1 ACTIVE bar Ground I/O I Power O Power O Power I N/A O Power I N/A O N/A O O O O I Power 138

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138
IDE Cable Connector Signals
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Host Reset
O
21
DMA
Request
I
2
Ground
N/A
22
Ground
Power
3
Host Data 7
I/O
23
Host IOW
O
4
Host Data 8
I/O
24
Ground
Power
5
Host Data 6
I/O
25
Host IOR
O
6
Host Data 9
I/O
26
Ground
Power
7
Host Data 5
I/O
27
I/O Channel Ready
I
8
Host Data 10
I/O
28
No Connection
N/A
9
Host Data 4
I/O
29
DMA Acknowledge
O
10
Host Data 11
I/O
30
Ground
Power
11
Host Data 3
I/O
31
Host IRQ
I
12
Host Data 12
I/O
32
No Connection
N/A
13
Host Data 2
I/O
33
Host A1
O
14
Host Data 13
I/O
34
No Connection
N/A
15
Host Data 1
I/O
35
Host A0
O
16
Host Data 14
I/O
36
Host A2
O
17
Host Data 0
I/O
37
Host CS0
O
18
Host Data 15
I/O
38
Host CS1
O
19
Ground
Power
39
ACTIVE bar
I
20
No Connection
N/A
40
Ground
Power