IDE Connector Pinout
Well, since I've been asked this more than once here is the current standard IDE pinout.
Hopefully it'll help some of you ;)
IDE Connector Pinout
| Signal Name | Pin # | Pin # | Signal Name |
|---|---|---|---|
| Reset IDE | 1 | 2 | Ground |
| Host Data 7 | 3 | 4 | Host Data 8 |
| Host Data 6 | 5 | 6 | Host Data 9 |
| Host Data 5 | 7 | 8 | Host Data 10 |
| Host Data 4 | 9 | 10 | Host Data 11 |
| Host Data 3 | 11 | 12 | Host Data 12 |
| Host Data 2 | 13 | 14 | Host Data 13 |
| Host Data 1 | 15 | 16 | Host Data 14 |
| Host Data 0 | 17 | 18 | Host Data 15 |
| Ground | 19 | 20 | Key |
| DDRQ | 21 | 22 | Ground |
| I/O Write | 23 | 24 | Ground |
| I/O Read | 25 | 26 | Ground |
| IOC HRDY | 27 | 28 | Cable select pull-up |
| DDACK | 29 | 30 | Ground |
| IRQ | 31 | 32 | No Connect |
| Addr 1 | 33 | 34 | GPIO_DMA66_Detect |
| Addr 0 | 35 | 36 | Addr 2 |
| Chip Select 1P (1S) | 37 | 38 | Chip Select 3P (3S) |
| Activity | 39 | 40 | Ground |
Or this (if you like ASCII like me):
+===========================================+=============+====+=============+ | Description | Source |Pin | Acronym | +-------------------------------------------+-------------+----+-------------+ | Reset | Host | 1 | RESET- | | | n/a | 2 | Ground | | Data bus bit 7 | Host/Device | 3 | DD7 | | Data bus bit 8 | Host/Device | 4 | DD8 | | Data bus bit 6 | Host/Device | 5 | DD6 | | Data bus bit 9 | Host/Device | 6 | DD9 | | Data bus bit 5 | Host/Device | 7 | DD5 | | Data bus bit 10 | Host/Device | 8 | DD10 | | Data bus bit 4 | Host/Device | 9 | DD4 | | Data bus bit 11 | Host/Device | 10 | DD11 | | Data bus bit 3 | Host/Device | 11 | DD3 | | Data bus bit 12 | Host/Device | 12 | DD12 | | Data bus bit 2 | Host/Device | 13 | DD2 | | Data bus bit 13 | Host/Device | 14 | DD13 | | Data bus bit 1 | Host/Device | 15 | DD1 | | Data bus bit 14 | Host/Device | 16 | DD14 | | Data bus bit 0 | Host/Device | 17 | DD0 | | Data bus bit 15 | Host/Device | 18 | DD15 | | Ground | n/a | 19 | Ground | | (keypin) | n/a | 20 | Reserved | | DMA Request | Device | 21 | DMARQ | | Ground | n/a | 22 | Ground | | I/O Write | Host | 23 | DIOW- | | Ground | n/a | 24 | Ground | | I/O Read | Host | 25 | DIOR- | | Ground | n/a | 26 | Ground | | I/O Ready | Device | 27 | IORDY | | Spindle Sync or Cable Select | (note 1) | 28 | SPSYNC:CSEL | | DMA Acknowledge | Host | 29 | DMACK- | | Ground | n/a | 30 | Ground | | Interrupt Request | Device | 31 | INTRQ | | 16 Bit I/O | Device | 32 | IOCS16- | | Device Address Bit 1 | Host | 33 | DA1 | | PASSED DIAGNOSTICS | (note 1) | 34 | PDIAG- | | Device Address Bit 0 | Host | 35 | DAO | | Device Address Bit 2 | Host | 36 | DA2 | | Chip Select 0 | Host | 37 | CS0- | | Chip Select 1 | Host | 38 | CS1- | | Device Active or Slave (Device 1) Present | (note 1) | 39 | DASP- | | Ground | n/a | 40 | Ground | +-------------------------------------------+-------------+----+-------------+ | Note 1: See signal descriptions for information on source of these signals | +============================================================================+
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