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Toshiba Corporation Digital Media Network Company
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10.8.43 Read Log EXT (2Fh)
COMMAND CODE
0 0 1 0 1 1 1 1
REGISTER
REGISTER SETTING
NORMAL COMPLETION
DR
drive no.
no change
LBA
Low
Current
Previous
log address
Reserved
HOB=0
HOB=1
Reserved
Reserved
LBA
Mid
Current
Previous
Sector offset(7:0)
Sector offset(15:8)
HOB=0
HOB=1
Reserved
Reserved
LBA
High
Current
Previous
Reserved
Reserved
HOB=0
HOB=1
Reserved
Reserved
SC Current
Previous
sector count(7:0)
sector count(15:8)
HOB=0
HOB=1
Reserved
Reserved
FT Current
Previous
Reserved
Reserved
HOB=0
HOB=1
no change
no change
This command returns the specified log to the host. The device shall interrupt for each DRQ block
transferred.
Sector Count - Specifies the number of sectors to be read from the specified log. The log transferred by the
drive shall start at the sector in the specified log at the specified offset, regardless of the sector count
requested.
LBA Low - Specifies the log to be returned as described in the following Table.
LBA Mid - Specifies the first sector of the log to be read.
Log Sector
Log sector address
Content
R/W
00h Log
directory
RO
01h
SMART error log
See Note
02h
Comprehensive SMART error log
See Note
03h
Extended comprehensive SMART error log
RO
04h-05h Reserved
-
06h
SMART self-test log
See Note
07h
Extended SMART self-test log
RO
08h Reserved
-
09h
Selective self-test log
See Note
0Ah-7Fh Reserved
-
80h-9Fh
Host vendor specific
R/W
A0h-FFh Reserved
-
Key
−
RO –Log is read only by the host.
R/W –Log is read or written by the host.
NOTE - Log addresses 01h,02,,06h and 09h are used by the SMART READ LOG
command commands. If these log addresses are used with the READ LOG EXT
command, the device shall return command aborted.