SATA-Disk Module 4

APSDMxxxx45AX-PXX

11

© 2014 Apacer Technology Inc.

Rev. 1.4

6. Software Interface

6.1 Command Set

Table 6-1: Command set

Code

Command

Code

Command

E5h

Check Power Mode

F3h

Security Erase Prepare

06h

Data Set Management

F4h

Security Erase Unit

90h

Execute Device Diagnostic

F5h

Security Freeze Lock

E7h

Flush Cache

F1h

Security Set Password

EAh

Flush Cache EXT

F2h

Security Unlock

ECh

Identify Device

70h

Seek

E3h

Idle

EFh

Set Features

E1h

Idle Immediate

C6h

Set Multiple Mode

91h

Initialize Device Parameters

E6h

Sleep

C8h

Read DMA

B0h

SMART

25h

Read DMA EXT

E2h

Standby

C4h

Read Multiple

E0h

Standby Immediate

29h

Read Multiple EXT

CAh

Write DMA

20h

Read Sector

35h

Write DMA EXT

24h

Read Sector EXT

C5h

Write Multiple

40h

Read Verify Sectors

39h

Write Multiple EXT

42h

Read Verify Sectors EXT

30h

Write Sector

10h

Recalibrate

34h

Write Sector EXT

F6h

Security Disable Password

6.2 S.M.A.R.T.

S.M.A.R.T. is an abbreviation for Self-Monitoring, Analysis and Reporting Technology, a self-monitoring

system that provides indicators of drive health as well as potential disk problems. It serves as a warning

for users from unscheduled downtime by monitoring and displaying critical drive information. Ideally, this

should allow taking proactive actions to prevent drive failure and make use of S.M.A.R.T. information for

future product development reference.

Apacer devices use the standard SMART command B0h to read data out from the drive to activate our

S.M.A.R.T. feature that complies with the ATA/ATAPI specifications. S.M.A.R.T. Attribute IDs shall

include initial bad block count, total later bad block count, maximum erase count, average erase count,

power on hours and power cycle. When the S.M.A.R.T. Utility running on the host, it analyzes and reports

the disk status to the host before the device reaches in critical condition.

Note: attribute IDs may vary from product models due to various solution design and supporting

capabilities.