Product Specification
StorFly 25
VSFA25PxxxxG-xxx
Rev: 1.0
Tel 949.888.2444
–
30052 Tomas, Rancho Santa Margarita, CA 92688 USA
–
www.virtium.com
22
Word
Value
Description
9
0000h
Reserved for Serial ATA
10-20
0000h
Reserved
21
0000h
Command set/feature set supported part 2
Bit15 1 = Reporting support for the NV Cache feature set is changeable
Bit14 1 = Reporting support for the NV Cache Power Management feature set is changeable
Bit13 1 = Reporting support for WRITE UNCORRECTABLE EXT is changeable
Bit12 1 = Reporting support for the Trusted Computing feature set is changeable
Bit11 1 = Reporting support for the Free-fall Control feature set is changeable
Bit10:0 Reserved
22
0000h
Command set/feature set supported part 3
Bit15:0 Reserved
23-207
0000h
Reserved
208-254
0000h
Vender Specific
255
Ch
A5h
Integrity word
Bit15:8 Checksum
Bit7:0 Signature
6.4 S.M.A.R.T. Attributes
6.4.1
Introduction
Self-Monitoring, analysis, and reporting technology (SMART) is monitoring system that monitors device
condition based on the indicators reported by the device itself. This system is created to anticipate/predict
any failures that might happen before it actually happens in the hope that there is still time to take action.
This document is only created for the purpose to inform users about the SMART commands and SMART
attributes implemented by Silicon Motion, Inc, including the data structure returned by those command. For
more detail information on how to invoke the SMART command, please refer to the ATA specification since
the topic is outside the scope of this document. For the information, the current implementation is based on
the ATA-7 specification document.
6.4.2
SMART Command
The following table defines the SMART command set that is supported by SM2244/SM2250. Please note
that D1h and D3h are obsolete commands. Although obsolete, the interfaces are still provided to maintain
backward compatibility with the previous ATA specification.
Table 19: SMART Feature register values
Value
Command
D0h
SMART Read Data
D1h
SMART Read Attribute Threshold (Obsolete).
D2h
SMART Enable/Disable Attribute Auto-save.
