Seagate STT8000A manual ATA-2 Interface pin assignments, Pin Assignment Description Source

Chapter 3 Installation

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

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