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PRELIMINARY/CONFIDENTIAL
16 MACH2 2.5-Inch Serial ATA Solid State Drive
Standard ATA Commands
Table 10 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 specification.
Table 10. 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 98h or E5h No Yes No No
Yes
(a)
DOWNLOAD MICROCODE 92h Yes No No No No
ERASE SECTOR C0h No Yes Yes Yes
Yes
(a)
EXECUTE DRIVE DIAGNOSTIC 90h No No No No
Yes
(a)
FLUSH CACHE E7h TBD TBD TBD TBD TBD
FLUSH CACHE EXTENDED EAh TBD TBD TBD TBD TBD
FORMAT TRACK 50h No Yes No Yes
Yes
(b)
IDENTIFY RESPONSE ECh Yes No No No
Yes
(a)
IDLE 97h, E3h No Y No No
Yes
(a)
IDLE IMMEDIATE 95h, E1h No No No No
Yes
(a)
INITIALIZE DRIVE PARAMETERS 91h No Yes No No
Yes
(b)
NOP 00h No No No No
Yes
(b)
READ BUFFER E4h No No No No
No
)
READ DMA C8h No Yes Yes Yes
Yes
(b)
READ DMA EXTENDED 25h No Yes Yes Yes
Yes
(b)
READ DMA QUEUED C7h No Yes Yes Yes
Yes
(b)
READ DMA QUEUED EXT 26h No Yes Yes Yes
Yes
(b)
READ MULTIPLE C4h No Yes Yes Yes
Yes
(b)
READ MULTIPLE EXTENDED 29h No Yes Yes Yes
Yes
(b)
READ SECTOR(S) 20h No Yes Yes Yes
Yes
(b)
READ SECTOR(S) EXTENDED 24h No Yes Yes Yes
Yes
(b)
READ VERIFY SECTOR(S) 40h No Yes Yes Yes
Yes
(b)
READ VERIFY EXTENDED 42h No Yes Yes Yes
Yes
(b)
RECALIBRATE 10h No No No No
Yes
(a)
SECURITY DISABLE PASSWORD F6h No No No No
Yes
(a)
SECURITY ERASE PREPARE F3h No No No No
Yes
(a)
SECURITY ERASE UNIT F4h No No No No
Yes
(a)
SECURITY FREEZE LOCK F5h No No No No
Yes
(a)
SECURITY SET PASSWORD F1h No No No No
Yes
(a)
SECURITY UNLOCK F2h No No No No
Yes
(a)
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