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Functional Description ATA Commands
22 Zeus Ultra DMA Solid State Drives
2.4.2 Standard ATA Commands
Table7 lists each command along with its respective command code and registers
accessed by the command. For detailed descriptions of the ATA commands, refer to the
ATA-5 specification.
Table 7. Supported ATA Commands
Command
Command
Code (Hex)
Feature
Register
Sector
Count
Register
Sector
Number
Register
Cylinder
High/Low
Register
Drive/Head
Number
Register
CHECK POWER MODE 98 or E5 No Yes No No
Yes
a
a. Only drive parameters are valid.
ERASE SECTOR C0 No Yes Yes Yes
Yes
b
b. Drive and head parameters are valid.
EXECUTE DRIVE
DIAGNOSTIC
90 No No No No
Yes
c
c. Address to drive 0 (zero). When executed, Both drives (master and slave) execute this command).
FORMAT TRACK 50 No Yes No Yes
Yes
(b)
IDENTIFY DRIVE EC Yes No No No
Yes
(a)
IDLE 97, E3 No Y No No
Yes
(a)
IDLE IMMEDIATE 95, E1 No No No No
Yes
(a)
INITIALIZE DRIVE
PARAMETERS
91 No Yes No No
Yes
(b)
READ MULTIPLE C4 No Yes Yes Yes
Yes
(b)
READ SECTOR(S) 20 No Yes Yes Yes
Yes
(b)
READ VERIFY SECTOR(S) 40 No Yes Yes Yes
Yes
(b)
RECALIBRATE 10 No No No No
Yes
(a)
SEEK 70 - 7F No No Yes Yes
Yes
(b)
SET FEATURES EF No Yes Yes Yes
Yes
(b)
SET MULTIPLE MODE C6 No Yes No No
Yes
(a)
SET SLEEP MODE 99 or E6 No No No No
Yes
(a)
STANDBY 96 or E2 No Yes No No
Yes
(a)
STANDBY IMMEDIATE 94 or E0 No No No No
Yes
(a)
WRITE MULTIPLE C5 No Yes Yes Yes
Yes
(b)
WRITE SECTOR(S) 30 No Yes Yes Yes
Yes
(b)