ata接口
ATA是AT bus Attachment 的缩写，由 Conner, Seagate 和 Western Digital 公司开发，是新版的 IDE 接口，ATA 接口在设备和主板侧的外观为40脚插针：
Pin | Name | Description | Pin | Name | Description |
1 | /RESET | Reset | 21 | DMARQ | DMA Request |
2 | GND | Ground | 22 | GND | Ground |
3 | DD7 | Data 7 | 23 | /DIOW | Write Strobe |
4 | DD8 | Data 8 | 24 | GND | Ground |
5 | DD6 | Data 6 | 25 | /DIOR | Read Strobe |
6 | DD9 | Data 9 | 26 | GND | Ground |
7 | DD5 | Data 5 | 27 | IORDY | I/O Ready |
8 | DD10 | Data 10 | 28 | SPSYNC:CSEL | Spindle Sync or Cable Select |
9 | DD4 | Data 4 | 29 | /DMACK | DMA Acknowledge |
10 | DD11 | Data 11 | 30 | GND | Ground |
11 | DD3 | Data 3 | 31 | INTRQ | Interrupt Request |
12 | DD12 | Data 12 | 32 | /IOCS16 | IO ChipSelect 16 |
13 | DD2 | Data 2 | 33 | DA1 | Address 1 |
14 | DD13 | Data 13 | 34 | PDIAG | Passed Diagnostics |
15 | DD1 | Data 1 | 35 | DA0 | Address 0 |
16 | DD14 | Data 14 | 36 | DA2 | Address 2 |
17 | DD0 | Data 0 | 37 | /IDE_CS0 | (1F0-1F7) |
18 | DD15 | Data 15 | 38 | /IDE_CS1 | (3F6-3F7) |
19 | GND | Ground | 39 | /ACTIVE | Led driver |
20 | KEY | Key (Pin missing) | 40 | GND | Ground |
ATA 44 接口
ATA 是 AT bus Attachment 的缩写，由 Conner, Seagate 和 Western Digital 公司开发，是新版的 IDE 接口，ATA 44 接口是 ATA 接口再加上电源等线，主要用于便携式计算机用 2.5" 硬盘，在设备和主板侧的外观为 44 脚插针。ATA 44 接口的 1-40 脚的定义同 ATA，41-44 的定义为：
Pin Name Description
41 +5VL +5 VDC (Logic)
42 +5VM +5 VDC (Motor)
43 GND Ground
44 /TYPE Type (0=ATA)
