Hitachi HDS721032CLA362 Manual De Usuario
Hitachi hard disk drive specifications
109
Output Parameters To The Device
Feature Current bit 7 (A/R)
Feature Current bit 7 (A/R)
If set to one, a request to add a new stream.
If cleared to zero, a request to remove a previous configured
stream is specified.
If cleared to zero, a request to remove a previous configured
stream is specified.
Feature Current bit 6 (R/W)
R/W specifies a read stream if cleared to zero and a write stream
if set to one.
if set to one.
Feature Current bit 0..2 (Stream ID)
The Stream ID shall be a value between 0 and 7.
Feature Previous
The default Command Completion Time Limit (CCTL).
The value is calculated as follows:
(Default CCTL) = ((content of the Features register)*
The value is calculated as follows:
(Default CCTL) = ((content of the Features register)*
(Identify Device words (99:98))) micriseconds.
This time shall be used by the device when a streaming
command with the same stream ID and a CCTL of zero are
issued. The time is measured from the write of the command
register to the final INTRQ for command completion. The device
has minimum CCTL value. When the specified value is
shorter than the minimum value, CCTL is set to the
minimum value. Actual minimum CCTL value is described
in the “Deviations from Standard” section.
command with the same stream ID and a CCTL of zero are
issued. The time is measured from the write of the command
register to the final INTRQ for command completion. The device
has minimum CCTL value. When the specified value is
shorter than the minimum value, CCTL is set to the
minimum value. Actual minimum CCTL value is described
in the “Deviations from Standard” section.
Sector Count Current
Allocation Unit Size In Sectors (7:0)
Sector Count Previous
Allocation Unit Size In Sectors (15:8)