1 hard disk (ide) connector (cn4), 2 network setting (cn1, cn2, cn3) – Acrosser AR-B1550 User Manual
Page 17
AR-B1550 User
s Guide
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3.2.1 Hard Disk (IDE) Connector (CN4)
A 44-pin header type connector (CN4) is provided to interface with up to two embedded hard disk drives (IDE AT
bus). This interface, through a 44-pin cable, allows the user to connect up to two drives in a “daisy chain” fashion.
To enable or disable the hard disk controller, please use the BIOS Setup program, which is explained further in
chapter 5. The following table illustrates the pin assignments of the hard disk drive’s 44-pin connector.
1
2
44
43
Pin
Signal
Pin
Signal
1
-RESET
2
GROUND
3
DATA 7
4
DATA 8
5
DATA 6
6
DATA 9
7
DATA 5
8
DATA 10
9
DATA 4
10
DATA 11
11
DATA 3
12
DATA 12
13
DATA 2
14
DATA 13
15
DATA 1
16
DATA 14
17
DATA 0
18
DATA 15
19
GROUND
20
NOT USED
21
IDEDREQ
22
GROUND
23
-IOW A
24
GROUND
25
-IOR A
26
GROUND
27
IDEIORDYA
28
GROUND
29
-DACKA
30
GROUND
31
AINT
32
GROUND
33
SA 1
34
Not Used
35
SA 0
36
SA 2
37
CS 0
38
CS 1
39
HD LED A
40
GROUND
41
VCC
42
VCC
43
GROUND
44
Not Used
Hard Disk (IDE) Connector
3.2.2 Network Setting (CN1, CN2, CN3)
The CN1, CN2 & CN3 RJ-45 header are the standard network headers. The following table is the pin assignment.
1
8
1
8
1
8
PIN (CN12)
FUNCTION
1
TPTX+
2
TPTX -
3
TPRX+
4
Not Used
5
Not Used
6
TPRX -
7
Not Used
8
Not Used
RJ-45 Pin Assignment