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1.11.5 PCI IDE Connectors (J9J1, J8J1)
Pin
Signal Name
1
Reset IDE
3
Host data 7
5
Host data 6
7
Host data 5
9
Host data 4
11
Host data 3
13
Host data 2
15
Host data 1
17
Host data 0
19
Ground
21
DDRQ0 [DDRQ1]
23
I/O write#
25
I/O read#
27
IOCHRDY
29
DDACK0# [DDACK1#]
31
IRQ 14 [IRQ 15]
33
Address 1
35
Address 0
37
Chip select 1P# [Chip select 1S#]
39
Activity#
NOTE:
Signal names in brackets are for the secondary IDE connector
1.11.6 Power Supply Connector (J5M1)
An ATX power supply supports remote power on/off through pin 14 of the power supply
connector. This enables the motherboard to turn off system power through software control.
To enable soft-off control in software, APM must be enabled in the Setup program and in the
operating system. When the system BIOS receives the correct APM command from the operating
system, the BIOS turns off power to the computer. For example, in the Windows 95 Start menu,
the user selects Shutdown to turn off the power.
Motherboard Description
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
Vcc pull-up
30
Ground
32
Reserved
34
Reserved
36
Address 2
38
Chip select 3P# [Chip select 3S#]
40
Ground
23
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