Seagate STT8000A - Manual (Page 28)

Chapter 3 Installation
Page 20 STT8000A Product Manual
ATA-2 Interface pin assignments
The STT8000A provides a standard ATA-2 connector. The pin assignments for this
connector are listed in the following table for your reference.
Pin Assignment Description Source
1 RESET Reset Host
2 Gnd Ground N/A
3 DD7 Data Bus bit 7 Host/Device
4 DD8 Data Bus bit 8 Host/Device
5 DD6 Data Bus bit 66 Host/Device
6 DD9 Data Bus bit 9 Host/Device
7 DD5 Data Bus bit 6 Host/Device
8 DD10 Data Bus bit 10 Host/Device
9 DD4 Data Bus bit 4 Host/Device
10 DD11 Data Bus bit 11 Host/Device
11 DD3 Data Bus bit 3 Host/Device
12 DD12 Data Bus bit 12 Host/Device
13 DD2 Data Bus bit 2 Host/Device
14 DD13 Data Bus bit 13 Host/Device
15 DD1 Data Bus bit 1 Host/Device
16 DD14 Data Bus bit 14 Baby sitting
17 DD0 Data Bus bit 0 Baby sitting
18 DD15 Data Bus bit 15 Host/Device
19 GND Ground N/A
20 --- Key pin N/A
21 DMARQ DMA Request Device
22 GND Ground N/A
23 DIOW- I/O Write Host