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J25
I2C header
This optional header can be used to connect user specific hardware, e.g. a front panel
microcontroller, or for a licensing dongle.
1
+3.3V
power supply
2
SMB_SCL
I2C clock
3
SMB_SDA
I2C data
4
GND
ground
J21
IDE header
1
HDRST#
IDE reset
2
GND
ground
3
HDD7
IDE data 7
4
HDD8
IDE data 8
5
HDD6
IDE data 6
6
HDD9
IDE data 9
7
HDD5
IDE data 5
8
HDD10
IDE data 10
9
HDD4
IDE data 4
10
HDD11
IDE data 11
11
HDD3
IDE data 3
12
HDD12
IDE data 12
13
HDD2
IDE data 2
14
HDD13
IDE data 13
15
HDD1
IDE data 1
16
HDD14
IDE data 14
17
HDD0
IDE data 0
18
HDD15
IDE data 15
19
GND
ground
20
key
key pin (missing)
21
HDRQ
IDE DMA request
22
GND
ground
23
HDIOW#
IDE I/O write
24
GND
ground
25
HDIOR#
IDE I/O read
26
GND
ground
27
HDIORDY
IDE I/O ready
28
CSEL
cable select (pull down)
29
HDACK#
IDE DMA acknowledge
30
GND
ground
31
HDIRQ
IDE interrupt
32
nc
no connect
33
HDA1
IDE address 1
34
HDPDIA#
IDE diagnostic, 80 pin cable ID
35
HDA0
IDE address 0
36
HDA2
IDE address 2
37
HDCS0#
IDE chip select 0
38
HDCS1#
IDE chip select 1
39
HDLED#
IDE led output
40
GND
ground
ALIX system board
All manuals and user guides at all-guides.com
17
2/21/2008
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