Command Set - Seagate Medalist 2520 Product Manual

Medalist 2520 Product Manual, Rev. A

3.2 Command set

This section lists all of the ATA commands the drive uses. Only the
commands with unique implementation for the drive is discussed in this
manual. For information about the ATA interface, refer to X3T13.1153D
Rev. 9, Information Technology—AT Attachment-4 Interface specifica-
tion.
The table below lists all commands implemented in the drive. It uses the
following abbreviations:
FR Features register
SC Sector Count register
SN Sector Number register
CY Cylinder register
DH Drive/Head register
n This register does not contain a valid parameter for this
command.
y This register contains a valid parameter for this command. In
the Drive/Head register, both the drive and head parameters
are valid for this command.
D The Drive/Head register contains a valid drive parameter for
this command. The head parameter is not valid for this
command.
Note. Read DMA, Read Sector, Read Verify Sector, Write DMA, and
Write Sector support with retry and without retry commands.
Command name
Check Power Mode
Execute Drives Diagnostic
Identify Drives
Initialize Drive Parameters
Read DMA
Read Multiple
Read Sector
Read Sector Buffer
continued
Parameters used
Command
code (in hex)
FR SC SN CY DH
98, E5 n y
90 n n
EC n n
91 n y
C8, C9 — y
C4 n y
20, 21 n y
E4 n n
27
n n D
n n D
n n D
n n y
y y y
y y y
y y y
n n D