Hitachi HDS721050CLA362 Specifications page 148

Output Parameters To The Device
Feature Current
Feature Previous
Sector Count Current
TAG (bits 7-3)
Sector Count Previous
PRIO (bits 7)
Sector Number Current
Sector Number Previous
Cylinder Low Current
Cylinder Low Previous
Cylinder High Current
Cylinder High Previous
Device/Head
FUA (bit 7)
Input Parameters From The Device
Sector Number (HOB=0)
Sector Number (HOB=1)
Cylinder Low (HOB=0)
Cylinder Low (HOB=1)
Cylinder High (HOB=0)
Cylinder High (HOB=1)
HITACHI Deskstar & CinemaStar 7K1000.B & Deskstar E7K1000 Hard Disk Drive specification
The number of sectors to be transferred low order, bits (7:0).
The number of sectors to be transferred high order, bits (15:8).
.
The TAG value shall be assigned to be different from all other queued
commands. The value shall not exceed the maximum queue depth specified by
the Word 75 of the Identify Device information.
The Priority (PRIO) value shall be assigned by the host based on the priority of
the command issued. The device shall make a best effort to complete High
priority requests in a more timely fashion than Normal priority requests. The
Priority values are defined as follows:
0b Normal priority
1b High priority
LBA (7:0)
LBA (31:24)
LBA (15:8)
LBA (39:32)
LBA (23:16)
LBA (47:40)
When the FUA bit is set to 1, the requested data is always retrieved from the
media regardless of whether the data are held in the sector buffer or not.
When the FUA bit is set to 0, the data may be retrieved from the media or from
the cached data left by previously processed Read or Write commands.
LBA (7:0) of the address of the first unrecoverable error.
LBA (31:24)of the address of the first unrecoverable error.
LBA (15:8)of the address of the first unrecoverable error.
LBA (39:32)of the address of the first unrecoverable error.
LBA (23:16)of the address of the first unrecoverable error.
LBA (47:40)of the address of the first unrecoverable error.
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