Ide - VersaLogic EPM-14 Cougar Reference Manual

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 J8 provides the interface to the IDE controller.
Jumper V2[1-2] determines if the CompactFlash plugged into J5 is the master device or slave.
Use CMOS Setup to specify the drive parameters of the attached drives.
Cable length must be 18" or less to maintain proper signal integrity.
Warning!
Pin Signal Name
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 NC
21 DREQ
22 Ground
EPM-14 Reference Manual
Table 5: IDE Hard Drive Connector Pinout
Function
Reset signal from CPU
Ground
Data bus bit 7
Data bus bit 8
Data bus bit 6
Data bus bit 9
Data bus bit 5
Data bus bit 10
Data bus bit 4
Data bus bit 11
Data bus bit 3
Data bus bit 12
Data bus bit 2
Data bus bit 13
Data bus bit 1
Data bus bit 14
Data bus bit 0
Data bus bit 15
Ground
Key
DMA request
Ground
Interfaces and Connectors
Pin Signal Name Function
23 DIOW I/O write
24 Ground Ground
25 DIOR I/O read
26 Ground Ground
27 IORDY I/O ready
28 Ground Ground
29 DMACK- DMA acknowledge
30 Ground Ground
31 INTRQ Interrupt request
32 NC No connection
33 DA1 Device address bit 1
34 CBLID- Cable type identifier
35 DA0 Device address bit 0
36 DA2 Device address bit 2
37 CS0 Chip select 0
38 CS1 Chip select 1
39 PDLED IDE LED
40 Ground Ground
41 Power +5.0 V
42 Power +5.0 V
43 Ground Ground
44 NC No connection
26