Specifications

T
T
T
S
S
S
3
3
3
2
2
2
G
G
G
S
S
S
S
S
S
D
D
D
2
2
2
5
5
5
-
-
-
M
M
M
T
T
T
S
S
S
6
6
6
4
4
4
G
G
G
S
S
S
S
S
S
D
D
D
2
2
2
5
5
5
-
-
-
M
M
M
T
T
T
S
S
S
1
1
1
2
2
2
8
8
8
G
G
G
S
S
S
S
S
S
D
D
D
2
2
2
5
5
5
-
-
-
M
M
M
2.5” Solid State Disk
Transcend Information Inc.
V1.00
15
SMART DISABLE OPERATIONS
B0h with a Feature register value of D9h.Disables the SMART function. Upon receiving the command, the drive
disables all SMART operations. This setting is maintained when the power is turned off and then back on.
Once this command has been received, all SMART commands other than SMART ENABLE OPERATIONS are
aborted with the Aborted Command error.
This command disables all SMART capabilities including any and all timer and event count functions related
exclusively to this feature. After command acceptance, this controller will disable all SMART operations. SMART data in
no longer be monitored or saved. The state of SMART is preserved across power cycles.
SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE
B0h with a Feature register value of D2h.Enables or disables the attribute value autosave function. This command
specifies whether the current attribute values are automatically saved to the drive when it changes the mode. This setting
is maintained when the power is turned on and off.
SMART ENABL OPERATIONS
B0h with a Feature register value of D8h.Enables the SMART function. This setting is maintained when the power is
turned off and then back on. Once the SMART function is enabled, subsequent SMART ENABLE OPERATIONS
commands do not affect any parameters
SMART EXECUTE OFF-LINE IMMEDIATE
B0h with the content of the Features register equal to D4h. This command causes the device to immediately initiate
the optional set of activities that collect SMART data in an off-line mode and then save this data to the device's non-volatile
memory, or execute a self-diagnostic test routine in either captive or off-line mode.
SMART RETURN STATUS
B0h with a Feature register value of DAh.This command causes the device to communicate the reliability status of the
device to the host. If a threshold exceeded condition is not detected by the device, the device shall set the LBA Mid register
to 4Fh and theLBA High register to C2h. If a threshold exceeded condition is detected by the device, the device shall set
the LBA Mid register to F4h and the LBA High register to 2Ch.
SMART Read Data
B0h with the content of the Features register equal to D0h. This command returns the Device SMART data structure to
the host.
SMART DATA Structure
The following 512 bytes make up the device SMART data structure. Users can obtain the data using the