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PRELIMINARY/CONFIDENTIAL
MACH2 2.5-Inch Serial ATA Solid State Drive 21
SEEK 70h, 7Fh This command is effectively a NOP command to the SSD
although it does perform a range check.
SET FEATURES EFh This command is used by the host to establish or select certain
features supported by the drive. When the SSD receives this
command, it sets BSY, checks the contents of the Features
register, applies changes as necessary, clears BSY and
generates an interrupt. If the value in the register does not
represent a feature supported by the drive, the command is
canceled with the Abort Error condition.
SET MULTIPLE MODE C6h This command enables the SSD to perform multiple read and
write operations and establishes the block count for these
commands.
SET SLEEP MODE 99h, E6h This is the only command that allows the host to configure the
drive for Sleep Mode. When the drive is set to Sleep Mode, the
SSD clears the BSY line and issues an interrupt. The card enters
Sleep Mode and the hardware or software must be reset to
activate the drive.
SLEEP E6h This command is mandatory for devices that implement the
Power Management feature set. The command will cause the
device to enter Sleep mode. The device will not power-on in
Sleep mode nor remain in Sleep mode following a reset
sequence. The method used to deactivate Sleep mode is
transport specific. The Power Management feature set is
mandatory for devices that do not implement the PACKET
Command set. This command is mandatory when power
management is not implemented by the PACKET Command set
device.
SMART B0h See S.M.A.R.T. Support.
STANDBY 96h, E2h This command will configure the drive for Standby Mode. If the
Sector Count Register is a value other than 0H, an Auto Power
Down is enabled and when the drive returns to Idle Mode, the
timer starts a countdown. The time is set in the Sector Count
Register.
STANDBY IMMEDIATE 94h, E0h This command will cause the SSD to set BYS, enter the Standby
Mode, clear BSY, and return the interrupt immediately.
WRITE BUFFER E8h This command is optional for devices that implement the General
feature set. This command allows the host to write the contents
of one 512-byte block of data in the in the buffer of the device.
WRITE DMA CAh This command is mandatory for devices that implement the
General feature set. The command allows the host to write data
using the DMA data transfer protocol.
WRITE DMA EXT 35h This command is mandatory for devices that implement the 48-bit
Address feature set. The command allows the host to write data
using the DMA data transfer protocol.
WRITE DMA FUA EXT 3Dh This command is mandatory for devices that implement the 48-bit
Address feature set. The command provides the same function
as Write DMA Extended (35h) regardless of whether write
caching is enabled. The user data is written to the media before
ending status for the command is reported.
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