Datasheet

Z5K500 OEM Specifications
142
S.M.A.R.T. Enable/Disable Attribute Autosave (Subcommand D2h)
This subcommand enables and disables the attribute autosave feature of the device. The S.M.A.R.T.
Enable/Disable Attribute Autosave subcommand allows the device to automatically save its updated
Attribute Values to the Attribute Data Sector; this subcommand causes the autosave feature to be
disabled. The state of the Attribute Autosave feature (either enabled or disabled) will be preserved by the
device across power cycle.
A value of 00h written by the host into the device’s Sector Count Register before issuing the S.M.A.R.T.
Enable/Disable Attribute Autosave subcommand will cause this feature to be disabled. Disabling this
feature does not preclude the device from saving Attribute Values to the Attribute Data sectors during
some other normal operation such as during a power-up or power-down.
A value of F1h written by the host into the device’s Sector Count Register before issuing the S.M.A.R.T.
Enable/Disable Attribute Autosave subcommand will cause this feature to be enabled. Any other non-zero
value written by the host into this register before issuing the S.M.A.R.T. Enable/Disable Attribute
Autosave subcommand will not change the current Autosave status but the device will respond with the
error code specified in “Table 125 S.M.A.R.T. Error Codes” on Page 155.
The S.M.A.R.T. Disa
ble Operations subcommand disables the autosave feature along with the device’s
S.M.A.R.T. operations.
Upon the receipt of the subcommand from the host the device enables or disables the Autosave feature.
S.M.A.R.T. Save Attribute Values (Subcommand D3h)
This subcommand causes the device to immediately save any updated Attribute Values to the device’s
Attribute Data sector regardless of the state of the Attribute Autosave feature. Upon receipt of the
S.M.A.R.T. Save Attribute Values subcommand from the host, the device writes any updated Attribute
Values to the Attribute Data sector.
S.M.A.R.T. Execute Off-line Immediate (Subcommand D4h)
This subcommand causes the device to immediately initiate the set of activities that collect Attribute data
in an off-line mode (off-line routine) or execute a self-test routine in either captive or off-line mode.
The LBA Low register shall be set to specify the operation to be executed.
LBA Low Operation to be executed
0
Execute S.M.A.R.T. off-line data collection routine immediately
1
Execute S.M.A.R.T. Short self-test routine immediately in off-line mode
2
Execute S.M.A.R.T. Extended self-test routine immediately in off-line mode
3
Reserved
4
Execute SMART Selective self-test routine immediately in off-line mode
127
Abort off-line mode self-test routine
128
Reserved
129
Execute S.M.A.R.T. Short self-test routine immediately in captive mode
130
Execute S.M.A.R.T. Extended self-test routine immediately in captive mode
131
Reserved
132
Execute SMART selective self-test routine immediately in captive mode
Off-line mode: The device executes command completion before executing the specified routine. During
execution of the routine the device will not set BSY nor clear DRDY. If the device is in the process of
performing its routine and is interrupted by a new command from the host, the device will abort or
suspend its routine and service the host within two seconds after receipt of the new command. After
servicing the interrupting command, the device will resume its routine automatically or not start its routine
depending on the interrupting command.
Captive mode: When executing self-test in captive mode, the device sets BSY to one and executes the
specified self-test routine after receipt of the command. At the end of the routine, the device sets the
execution result in the Self-test execution status byte and ATA registers as below and executes command
completion.
Status
Set ERR to one when self-test has failed
Error
Set ABRT to one when self-test has failed
LBA Mid
Set to F4h when self-test has failed
LBA High
Set to 2Ch when self-test has failed