Hitachi HTS542525K9SA00 - Page 127

Deskstar 7K160 Hard Disk Drive Specification
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10.22.1.6 Read/Write SCT Data Using SMART
10.22.1.7 Read/Write SCT Data Using Read/Write Log Ext
10.22.1.8 SCT Status Request
Once an SCT command has been issued, a status is reported in the ATA registers. This status indicates that the
command was accepted or that an error occurred. This ATA status return does not indicate successful completion
of the SCT actions. Some commands can take several minutes or even hours to execute. In this case, the host can
determine execution progress by requesting SCT status.
Command Block Output Registers
Register 7 6 5 4 3 2 1 0
Feature D5h(Read)/D6h(Write)
Sector Count Number of sectors to be
transferred
Sector Number E1h
Cylinder Low 4Fh
Cylinder High C2h
Device/Head - - - D - - - -
Command B0h
Command Block Output Registers
Register 7 6 5 4 3 2 1 0
Current Reserved Feature
Previous Reserved
Current 01h Sector Count
Previous 00h
Current E1h LBA Low
Previous Reserved
Current 00h LBA Mid
Previous 00h
Current Reserved LBA High
Previous Reserved
Device/Head - - - D - - - -
Command 2Fh(Read)/3Fh(Write)