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19.33 REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS
(A3/0D)
Table 215: Report Supported Tasks Management Functions (A3/0D)
Byte
0
1
2-5
6-9
10
11
The REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS command requests information on task management
functions supported by the drive.
Allocation Length specifies the number of bytes that have been allocated for the returned parameter data. The allocation
length must be at least four. If the allocation length is less than four, Check Condition Status will be returned with sense key of
Illegal Request and additional sense code of Invalid Field in CDB.
The format of the returned parameter data is shown below.
Byte
0
1-3
ATS (Abort Task) bit set to one indicates that ABORT TASK is supported. An ATS bit of zero indicates that ABORT TASK
is not supported.
ATSS (Abort Task Set) bit set to one indicates that ABORT TASK SET is supported. An ATSS bit of zero indicates that
ABORT TASK SET is not supported.
CACAS (Clear ACA) bit set to one indicates that CLEAR ACA is supported. A CACAS bit of zero indicates that CLEAR
ACA is not supported.
CTSS (Clear Task Set) bit set to one indicates that CLEAR TASK SET is supported. A CTSS bit of zero indicates that
CLEAR TASK SET is not supported.
LURS (Logical Unit Reset) bit set to one indicates that LOGICAL UNIT RESET is supported. An LUR bit of zero indicates
that LOGICAL UNIT RESET is not supported.
QTS (Query Task) bit set to one indicates that QUERY TASK is supported. A QTS bit of zero indicates that QUERY TASK
is not supported.
TRS (Target Reset) bit set to one indicates that TARGET RESET is supported. A TRS bit of zero indicates that TARGET
RESET is not supported.
7
6
5
Reserved = 0
VU = 0
7
6
5
ATS
ATSS
CACAS
Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
Bit
4
3
Command Code = A3h
Service Action = 0Dh
Reserved = 0
Allocation Length
Reserved = 0
Reserved = 0
Bit
4
3
CTSS
LURS
Reserved = 0
255
2
1
0
Flag
Link
2
1
0
QTS
TRS
WAKES
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