Seagate Medalist Pro 4520, Руководство по эксплуатации продукта

Страница: 33 / 54

3.0 ATA Interface
The drives use an ATA interface. The interface complies with ANSI ATA
(AT Attachment) Interface Document
X3T13.1153 D Rev. 9 specification.
The ATA commands that the drives support are listed on pages 27 and
28. Commands and features with specific applications for these drives
are 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.
Medalist Pro 9140, 6530 and 4520 Product Manual, Rev. B 25