Ide Connectors - NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual

IDE Connectors

Table A-13 provides the pin assignments for system board IDE connectors. The signals in
parentheses are for the secondary connector.
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
- = Active low signal.
Table A-13 IDE Interface Pin Assignments
Signal Name
Reset IDE
Host Data 7
Host Data 6
Host Data 5
Host Data 4
Host Data 3
Host Data 2
Host Data 1
Host Data 0
Ground
DRQ0 (DRQ1)
I/O Write-
I/O Read-
IOCHRDY
DDACK0-
(DDACK1-)
IRQ14 (1RQ15)
Addr 1
Addr 0
Chip Select 0-
(Chip Select 1-)
Activity
Connector Pin Assignments
Pin Signal Name
2 Ground
4 Host Data 8
6 Host Data 9
8 Host Data 10
10 Host Data 11
12 Host Data 12
14 Host Data 13
16 Host Data 14
18 Host Data 15
20 Key
22 Ground
24 Ground
26 Ground
28 P_ALE (S_ALE)
30 Ground
32 Vcc Pull-up
34 No Connection
36 Addr 2
38 Chip Select 3P- (3S-)
40 Ground
A-9