Datasheet

T
T
T
S
S
S
2
2
2
G
G
G
~
~
~
1
1
1
6
6
6
G
G
G
M
M
M
S
S
S
A
A
A
5
5
5
0
0
0
0
0
0
T
T
T
S
S
S
1
1
1
6
6
6
G
G
G
~
~
~
6
6
6
4
4
4
G
G
G
M
M
M
S
S
S
A
A
A
3
3
3
0
0
0
0
0
0
mSATA SSD
Transcend Information Inc.
V1.0
21
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 ENABLE 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 turns 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 is 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 the condition and is not detected by the device, the device shall set the LBA Mid
register to 4Fh and the LBA High register to C2h. If a threshold exceeded the condition and 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 is 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 by using the “Read Data”
command.