T
T
T
S
S
S
6
6
6
4
4
4
G
G
G
S
S
S
S
S
S
D
D
D
1
1
1
0
0
0
-
-
-
M
M
M
1.0” Solid State Disk
Transcend Information Inc.
V1.6
32
SMART Command Set
SMART Command Set
SMART Feature Register Values
D0h
Read Data
D5h
Read Log
D1h
Read Attribute Threshold
D6h
Write Log
D2h
Enable/Disable Autosave
D8h
Enable SMART Operations
D3h
Save Attribute Values
D9h
Disable SMART Operations
D4h
Execute OFF-LINE Immediate
DAh
Return Status
1. If reserved size is below the Threshold, the status can be read from Cylinder register by Return Status command
(DAh).
SMART Data Structure
BYTE
F / V
Decription
0-1
X
Revision code
2-114
X
Vendor specific
115-116
V
Power cycle count (116=MSB, 115=LSB)
117-361
X
Vendor specific
362
V
Off line data collection status
363
X
Self-test execution status byte
364-365
V
Total time in seconds to complete off-line data collection activity
366
X
Vendor specific
367
F
Off-line data collection capability
368-369
F
SMART capability
370
F
Error logging capability
7-1 Reserved
0 1=Device error logging supported
371
X
Vendor specific
372
F
Short self-test routine recommended polling time (in minutes)
373
F
Extended self-test routine recommended polling time (in minutes)
374
F
Conveyance self-test routine recommended polling time (in minutes)
375-385
R
Reserved
386-395
F
Firmware Version/Date Code
396-397
F
Number of initial invalid block(396=MSB, 397=LSB)
398-399
V
Number of run time bad block(398=MSB, 399=LSB)
400
V
Number of spare block
511
V
Data structure checksum
F=the content of the byte is fixed and does not change.
V=the content of the byte is variable and may change depending on the state of the device or
the commands executed by the device.
X=the content of the byte is vendor specific and may be fixed or variable.
R=the content of the byte is reserved and shall be zero.
* 4 Byte value : [MSB] [2] [1] [LSB]
