CMX47786HX
RTD Embedded Technologies, Inc.
39
EIDE Connector, CN9
The EIDE connector is a 44-pin, 2mm connector that can connect to a variety of EIDE or IDE de-
vices. The connector provides all signals and power needed to use a 2.5" form factor (laptop) hard
drive. Also, the first 40 pins of the connector provide all of the signals needed to interface to a 3.5"or
5" form factor hard drive, CD-ROM drive, or other EIDE device. The larger form factors use a 40-
pin, 0.1 inch spacing connector, so an adapter cable or adapter board is needed.
In order to use faster than UDMA Mode 2 (Ultra ATA/33), an 80 conductor cable is required. The
BIOS automatically detects the presence of an 80 conductor cable. To connect to an 80 conductor
cable to CN12, and adapter board is required.
Table 19: EIDE Connector CN9
Pin
Signal
1
RESET-
2
Ground
3
DD7
4
DD8
5
DD6
6
DD9
7
DD5
8
DD10
9
DD4
10
DD11
11
DD3
12
DD12
13
DD2
14
DD13
15
DD1
16
DD14
17
DD0
18
DD15
19
Ground
20
N.C.)
21
DMARQ
22
Ground
23
DIOW-:STOP
24
Ground
25
DIOR-:HDMARDY-:HSTROBE
26
Ground
27
IORDY:DDMARDY-:DSTROB
28
CSEL
29
DMACK-
30
Ground
31
INTRQ
32
N.C
33
DA1
34
PDIAGDA0
35
N.C
36
DA2
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