Hitachi HDS721050CLA362 Specifications page 98

Implementation note for Background Operation (Function code = 0001h, 0002h)
In this mode, the drive will return command completion status when the drive finished receiving data.
Any command, including IDENTIFY DEVICE, other than SCT Status, issued to the drive while this command is
in progress will terminate the LBA Segment Access command. The incoming command is executed.
Use the SCT Status command to retrieve status information about the current SCT command. Example status
information includes: command active or complete, current LBA, and errors. When this command is in progress,
the SCT status error code will be FFFFh, and set to 0000h if the command completes without error. It will be less
than FFFFh and grater the 0000h if the command terminated prematurely for any reason.
Possible Extended Status Code for Background Operation (Function code = 0001h, 0002h)
0008h Background SCT command was aborted because of an interrupting host command
0009h Background SCT command was terminated because of unrecoverable error
FFFFh SCT command executing in background
Implementation note for Blocking Operation (Function code = 0101h, 0102h)
In this mode, the drive will return command completion status when the drive finished the LBA Segment Access
operation.
Outputs for Error
Command Block Input Registers (Error)
Register
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Possible Extended Status Code for Blocking Operation (Function code = 0101h, 0102h)
0017h Blocking SCT Segment Access command was terminated because of
unrecoverable error
HITACHI Deskstar & CinemaStar 7K1000.B & Deskstar E7K1000 Hard Disk Drive specification
7 6 5 4 3 2 1 0
04h
Extended Status code
(LSB)
Extended Status code
(MSB)
N/A
N/A
- - - - - - - -
51h
94