Ide / Pata Interface (J5) - VersaLogic Ocelot Reference Manual

Distributor of VersaLogic Corporation: Excellent Integrated System Limited
Datasheet of VL-CBR-2012 - 20" 24-BIT LVDS CABLE
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IDE / PATA Interface (J5)

The IDE interface is available to connect up to two IDE devices, such as hard disks, CD-ROM
drives, or Disk on Module devices. Connector J5 is the IDE controller with a 44-pin 2 mm
connector. Use CMOS Setup to specify the drive parameters of the drive. If you attach only one
IDE, it must be configured (jumpered) as the master device; a single IDE device configured as a
slave device can cause system failures.
Cable length must be 18" or less to maintain proper signal integrity.
This interface supplies power to 2.5" IDE drives. If you are connecting a 3.5" drive to the
interface (using the VL-CBR-4405 44-pin to 40-pin IDE adapter), you must supply external
power to the drive. The power cable attached to a 3.5" drive must be properly grounded so that
motor current is not returned via the grounds in the data cable.
VersaLogic offers a number of Disk on Module (DOM) flash storage devices, in capacities from
1 to 8 GB, that attach to the IDE connector. The VL-F20 series of DOMs have a 44-pin 2 mm
connector and are secured to the board with one M2.5 x 6mm nylon pan head Philips screw.
Screws are available in 10-count packages as part number VL-HDW-108.
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 PDMARQ
22 Ground
VL-EPMs-21 Reference Manual
Table 11: J5 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 CSEL Cable select
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 DASP- LED
40 Ground Ground
41 Power +5.0 V
42 Power +5.0 V
43 Ground Ground
44 NC No connection
33