Ata Interface; Ata Interface Connector Pin Assignments - Seagate Medalist 2520 Product Manual

Medalist 2520 Product Manual, Rev. A 25

3.0 ATA interface

The drive uses an ATA-4 interface. The interface complies with ANSI (AT
Attachment) Interface Document X3T13.1153 D Rev. 9 specification.
The ATA commands that the drive supports is listed on pages 29 and
30. Commands and features with specific applications for the drive is
also discussed in this section.
The ATA interface consists of single-ended, TTL-compatible receivers
and drivers that use an asynchronous interface protocol. The drivers can
sink up to 24 mA and drive a load up to 300 pF. The integrity of the ATA
interface is affected by the interface cable. It is designed to support a
40-conductor, nonshielded interface cable with a maximum length of 18
inches (46 centimeters).

3.1 ATA interface connector pin assignments

The signal name and signal direction for each I/O connector pin is shown
in Figure 7 on page 26. See the Seagate ATA Interface Reference
Manual , publication number 36111- xxx , for a complete description of
each pin.
Signal names are shown in upper-case letters. If the signal name is
followed by a minus sign (–), the signal is active low. Otherwise, the signal
is active high.