IDE=Integrated Drive Electronics.
Developed by Compaq and Western Digital.
Newer version of IDE goes under the name ATA=AT bus Attachment.
(At the controller & peripherals)
(At the cable)
40 PIN IDC MALE at the controller & peripherals.
40 PIN IDC FEMALE at the cable.
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | /RESET | Reset | |
| 2 | GND | Ground | |
| 3 | DD7 | Data 7 | |
| 4 | DD8 | Data 8 | |
| 5 | DD6 | Data 6 | |
| 6 | DD9 | Data 9 | |
| 7 | DD5 | Data 5 | |
| 8 | DD10 | Data 10 | |
| 9 | DD4 | Data 4 | |
| 10 | DD11 | Data 11 | |
| 11 | DD3 | Data 3 | |
| 12 | DD12 | Data 12 | |
| 13 | DD2 | Data 2 | |
| 14 | DD13 | Data 13 | |
| 15 | DD1 | Data 1 | |
| 16 | DD14 | Data 14 | |
| 17 | DD0 | Data 0 | |
| 18 | DD15 | Data 15 | |
| 19 | GND | Ground | |
| 20 | KEY | - | Key |
| 21 | n/c | - | Not connected |
| 22 | GND | Ground | |
| 23 | /IOW | Write Strobe | |
| 24 | GND | Ground | |
| 25 | /IOR | Read Strobe | |
| 26 | GND | Ground | |
| 27 | IO_CH_RDY | ||
| 28 | ALE | Address Latch Enable | |
| 29 | n/c | - | Not connected |
| 30 | GND | Ground | |
| 31 | IRQR | Interrupt Request | |
| 32 | /IOCS16 | ? | IO ChipSelect 16 |
| 33 | DA1 | Address 1 | |
| 34 | n/c | - | Not connected |
| 35 | DA0 | Address 0 | |
| 36 | DA2 | Address 2 | |
| 37 | /IDE_CS0 | (1F0-1F7) | |
| 38 | /IDE_CS1 | (3F6-3F7) | |
| 39 | /ACTIVE | Led driver | |
| 40 | GND | Ground |