Interfaces and Connectors
EBX-11 Reference manual
30
IDE
One IDE interface is available to connect up to two IDE devices, such as hard disks and CD-
ROM drives. If the on-board CompactFlash is configured for use, only one other IDE device can
be attached to the IDE controller. Connector J12 provides the interface to the IDE controller.
Jumper V2[1-2] determines if the CompactFlash plugged into J11 is the master device or slave.
Use CMOS Setup to specify the drive parameters of the attached drives.
Warning!
Cable length must be 18" or less to maintain proper signal integrity.
Table 8: IDE Hard Drive Connector Pinout
Pin Signal Name
Function
Pin Signal Name
Function
1
Reset-
Reset signal from CPU
23
DIOW
I/O write
2
Ground
Ground
24
Ground
Ground
3
DD7
Data bus bit 7
25
DIOR
I/O read
4
DD8
Data bus bit 8
26
Ground
Ground
5
DD6
Data bus bit 6
27
IORDY
I/O ready
6
DD9
Data bus bit 9
28
Ground
Ground
7
DD5
Data bus bit 5
29
DMACK-
DMA acknowledge
8
DD10
Data bus bit 10
30
Ground
Ground
9
DD4
Data bus bit 4
31
INTRQ
Interrupt request
10
DD11
Data bus bit 11
32
NC
No connection
11
DD3
Data bus bit 3
33
DA1
Device address bit 1
12
DD12
Data bus bit 12
34
CBLID-
Cable type identifier
13
DD2
Data bus bit 2
35
DA0
Device address bit 0
14
DD13
Data bus bit 13
36
DA2
Device address bit 2
15
DD1
Data bus bit 1
37
CS0
Chip select 0
16
DD14
Data bus bit 14
38
CS1
Chip select 1
17
DD0
Data bus bit 0
39
NC
No connection
18
DD15
Data bus bit 15
40
Ground
Ground
19
Ground
Ground
41
Power
+5.0 V
20
NC
Key
42
Power
+5.0 V
21
PDMARQ
DMA request
43
Ground
Ground
22
Ground
Ground
44
NC
No connection
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