360050398

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

Current

 

log address

HOB=0

 

Reserved

 

 

 

 

Low

Previous

 

Reserved

HOB=1

 

Reserved

 

LBA

Current

 

Sector offset(7:0)

HOB=0

 

Reserved

 

Mid

Previous

 

Sector offset(15:8)

HOB=1

 

Reserved

 

LBA

Current

 

Reserved

HOB=0

 

Reserved

 

High

Previous

 

Reserved

HOB=1

 

Reserved

 

SC

Current

 

sector count(7:0)

HOB=0

 

Reserved

 

 

Previous

 

sector count(15:8)

HOB=1

 

Reserved

 

FT

Current

 

Reserved

HOB=0

 

no change

 

 

Previous

 

Reserved

HOB=1

 

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.

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