Kontron EPIC/CE, User Manual

Page: 42 / 101

14 IDE Interfaces
Kontron User's Guide EPIC/CE 42
14 IDE Interfaces
PCI-bus devices serve as primary and secondary IDE hosts on the EPIC/CE. The controller supports up to
Ultra DMA 100 mode, up to PIO mode 4 timing and multiword DMA mode 1 and 2 with independent
timing. It also supports IDE legacy and IDE native mode configuration. The EPIC/CE features one IDE
interface that can drive two hard disks and one CompactFlash socket. When two IDE devices share a
single adapter, they are connected in a master/slave, daisy-chain configuration. If only one drive is in
the system, you must set it as the master. The CompactFlash socket is implemented through the
secondary host as master.
14.1 Connector
The IDE interface is available through Connector X24 (40 pins). To find the location of IDE interface,
please see the Appendix E: Connector Layout chapter.
This interface is designed in 0.1” grid for optimal connectivity to a 3.5” hard drive. The following table
shows the pin-out of the IDE connector.
Header Pin Signal Name Function
1 /HDRST Reset
2 GND Ground
3-18 PIDE_D1..D15 Primary IDE ATA data bus
19 GND Ground
20 NC Not connected
21 PIDE_DRQ Primary IDE DMA Request for IDE master
22 GND Ground
23 /PIDE_IOW Primary IDE IOWJ Command
24 GND Ground
25 /PIDE_IOR Primary IDE IORJ Command
26 GND Ground
27 PIDE_RDY Primary IDE ready
28 PIDE_PD1 IDE1 Cable Select (470
Ω
to Ground)
29 /PIDE_AK Primary IDE DACK for IDE master
30 GND Ground
31 PIDE_IRQ IDE IRQ Primary
32 NC Not connected
33 PIDE_A1 Primary IDE ATA address bus
34 PIDE_ATAD UDMA detection
35 PIDE_A0 Primary IDE ATA address bus
36 PIDE_A2 Primary IDE ATA address bus
37 /PIDE_CS1 IDE chipselect 1 for primary channel 0
38 /PIDE_CS3 IDE chipselect 2 for primary channel 1
39 PIDE_ACT Drive Activity
40 GND Ground