See ATA (Advanced Technology Attachment) Internal for more information and 40pin pinout.
50 pin IDC male connector at the
controller and peripherals.
50 pin IDC female connector at the
cable.
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | Audio Left | OUT | audio left |
| 2 | Audio Right | OUT | audio right |
| 3 | Audio ground | OUT | audio ground |
| 4 | GND | - | Ground |
| 5 | /RESET | OUT | Reset |
| 6 | DD8 | IN/OUT | Data 8 |
| 7 | DD7 | IN/OUT | Data 7 |
| 8 | DD9 | IN/OUT | Data 9 |
| 9 | DD6 | IN/OUT | Data 6 |
| 10 | DD10 | IN/OUT | Data 10 |
| 11 | DD5 | IN/OUT | Data 5 |
| 12 | DD11 | IN/OUT | Data 11 |
| 13 | DD4 | IN/OUT | Data 4 |
| 14 | DD12 | IN/OUT | Data 12 |
| 15 | DD3 | IN/OUT | Data 3 |
| 16 | DD13 | IN/OUT | Data 13 |
| 17 | DD2 | IN/OUT | Data 2 |
| 18 | DD14 | IN/OUT | Data 14 |
| 19 | DD1 | IN/OUT | Data 1 |
| 20 | DD15 | IN/OUT | Data 15 |
| 21 | DD0 | IN/OUT | Data 0 |
| 22 | DMARQ | ? | DMA Request |
| 23 | GND | - | Ground |
| 24 | /DIOR | OUT | Read Strobe |
| 25 | /DIOW | OUT | Write Strobe |
| 26 | GND | - | Ground |
| 27 | IORDY | IN | I/O Ready |
| 28 | /DMACK | ? | DMA Acknowledge |
| 29 | INTRQ | IN | Interrupt Request |
| 30 | /IOCS16 | ? | IO ChipSelect 16 |
| 31 | DA1 | OUT | Address 1 |
| 32 | PDIAG | ? | Passed Diagnostics |
| 33 | DA0 | OUT | Address 0 |
| 34 | DA2 | OUT | Address 2 |
| 35 | /IDE_CS0 | OUT | (1F0-1F7) |
| 36 | /IDE_CS1 | OUT | (3F6-3F7) |
| 37 | /ACTIVE - /DASI - DASP | OUT | Led driver |
| 38 | +5V | - | + 5 volts power |
| 39 | +5V | - | + 5 volts power |
| 40 | +5V | - | + 5 volts power |
| 41 | +5V | - | + 5 volts power |
| 42 | +5V | - | + 5 volts power |
| 43 | GND | - | Ground |
| 44 | GND | - | Ground |
| 45 | GND | - | Ground |
| 46 | GND | - | Ground |
| 47 | Device Cfg | - | Spindle Sync or Cable Select |
| 48 | GND | - | Ground |
| 49 | reserved | - | Vendor Unique |
| 50 | reserved | - | Vendor Unique |
Notes
- Direction is Controller relative Devices (CD-ROM).