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ATAPI Interface Chapter 5
Seagate Travan 40 Product Manual Page 27
ATAPI interface
Introduction
The Seagate Travan 40 drives come with an ATA Packet Interface (ATAPI)
controller for communications between the host computer and the drive. The drive
supports the QIC-157 standard interface.
Note: Refer to the QIC-157 Standard for detailed information about this interface.
This chapter clarifies the use of several ATA-2 signals and ATAPI commands that
are either vague or optional in the QIC-157 specification.
ATA-2 Interface pin assignments
The Seagate Travan drives provide 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 6 Host/Device
6 DD9 Data Bus bit 9 Host/Device
7 DD5 Data Bus bit 5 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 Host/Device
17 DD0 Data Bus bit 0 Host/Device
18 DD15 Data Bus bit 15 Host/Device
19 GND Ground N/A
20 — Key pin N/A
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