Synchronize Cache Command Descriptor Block-Data Format; Synchronize Cache Command-Field Descriptions - Maxtor ATLAS 10K III Product Manual

The SYNCHRONIZE CACHE command ensures that all logical blocks, within the
specified range in the drive's cache memory, have their most recent data value
recorded on the physical medium. If more recent data for a logical block, within the
specified range, exists in the cache memory than on the physical medium, then the
logical blocks from the cache memory is written to the physical medium. Logical
blocks are not necessarily removed from the cache as a result of the Synchronize Cache
operation. The data format and field descriptions are shown in Table 5-207 and Table
5-208 respectively.
T a b l e 5 - 2 0 7 SYNCHRONIZE CACHE Command Descriptor Block-Data Format
$ K V
 
$ [ V G
0
1
2 - 5
6
7 - 8
9
T a b l e 5 - 2 0 8 SYNCHRONIZE CACHE Command-Field Descriptions
( K G N F
Immediate. Must be 0. The drive returns status after the synchronize cache
Immed
operation has been completed.
RelAdr Relative Address. Must be 0. Relative addressing is not supported.
Logical
The address of the first logical sector of the range to be operated upon by
Block Ad-
this command.
dress
Specifies the total number of contiguous logical blocks within the range.
When set to 0, the drive removes all sectors from the given Logical Block Ad-
dress on.
Number of
When Number of Blocks and Logical Block Address are both 0, the drive re-
Blocks
moves all unwritten cache sectors to the medium.
It is not considered an error when no sectors within the specified range are
in the cache memory.
  
Operation Code (35h)
Reserved
Logical Block Address
Reserved
Number of Blocks
Control
& G U E T K R V K Q P
SCSI Description
 
Immed RelAdr
= 0
Maxtor Atlas 10K III

5-167