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
20
This command shall be issued immediately before the Security Erase Unit command to enable erasing and unlocking.
This command prevents accidental loss of data on the drive.
SECURITY ERASE UNIT (F4h)
The host uses this command to transfer 512 bytes of data, as shown in the following table, to the drive. The transferred
data contains a user or master password, which the drive compares with the saved password. If they match, the drive
deletes user data, disables the user password, and cancels the lock. The master password is still saved. It is re-enabled by
issuing the SECURITY SET PASSWORD command to re-set a user password.
SECURITY FREEZE LOCK (F5h)
Causes the drive to enter Frozen mode. Once this command has been executed, the following commands to update a
lock result in the Aborted Command error:
• SECURITY SET PASSWORD
• SECURITY UNLOCK
• SECURITY DISABLE PASSWORD
• SECURITY ERASE PREPARE
• SECURITY ERASE UNIT
The drive exits from Frozen mode upon a power-off or hard reset. If the SECURITY FREEZE LOCK command is issued
when the drive is placed in Frozen mode, the drive executes the command, staying in Frozen mode.
SMART Feature Set
Transcend IDE SSD supports the SMART command set and define some vendor-specific data to report spare/bad block
numbers in each memory management unit. Individual SMART commands are identified by the value placed in the Feature
register. Table shows these Feature register values.
Value
Command
D0h SMART READ DATA
D2h SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE
D4h SMART EXECUTE OFF-LINE IMMEDIATE
D8h SMART ENABLE OPERATIONS
D9h SMART DISABLE OPERATIONS
DAh
SMART RETURN STATUS
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 turns on.
Once this command has been received, all SMART commands other than SMART ENABLE OPERATIONS are
aborted with the Aborted Command error.