VersaLogic EPM-14 Cougar, Справочное руководство, Страница: 31 / 46

Interfaces and Connectors
EPM-14 Reference Manual
26
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.
Warning!
Cable length must be 18" or less to maintain proper signal integrity.
Table 5: 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 PDLED IDE LED
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 DREQ DMA request 43 Ground Ground
22 Ground Ground 44 NC No connection