Command Processing
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Table 1.2 Types of Command and Disconnect Processing
Commands with executing disconnect processing. (Note 2)
Commands without executing disconnect processing. (Note 1)
C CHANGE DEFINITION (40) O
F FORMAT UNIT (04) O
I INQUIRY (12) O
L LOG SELECT (4C) O
LOG SENSE (4D) O
M MODE SELECT (15) O
MODE SELECT EXTENDED (55) O
MODE SENSE (1A) O
MODE SENSE EXTENDED (5A) O
N
P PERSISTENT RESERVE IN (5E) O
PERSISTENT RESERVE OUT (5F) O
R READ (08) O
READ BUFFER (3C) O
READ CAPACITY (25) O
READ DEFECT DATA (37) O
READ EXTENDED (28) O
READ LONG (3E) O
REASSIGN BLOCKS (07) O
RECEIVE DIAGNOSTIC RESULTS (1C) O
RELEASE (17) O
REPORT DEVICE IDENTIFIER (A3) O
REPORT LUN (A0) O
REQUEST SENSE (03) O
RESERVE (16)
REZERO UNIT (01) O
S SEEK (0B) O
SEEK EXTENDED (2B) O
SEND DIAGNOSTIC (1D) O
SET DEVICE IDENTIFIER (A4) O
START/STOP UNIT (1B) O
SYNCHRONIZE CACHE (35) O
T TEST UNIT READY (00) O
VVERIFY (2F) O
WWRITE (0A) O
WRITE AND VERIFY (2E) O
WRITE BUFFER (3B) O
WRITE EXTENDED (2A) O
WRITE LONG (3F) O
WRITE SAME (41) O
(Note 1) Commands without executing disconnect processing: In cases only where commands are issued
without a tag, queuing processing (see Section 1.4) and disconnect processing cannot be
performed in the execution sequence.
(Note 2) Commands with executing disconnect processing: Regardless of command queuing, in a command’s
execution process (after the COMMAND phase is completed, or during or after the completion of data
transfer), disconnect processing is performed. However, in the case of commands with a data state (in
cases where it is hit in the cache, etc.), or with a number of processing modes, other than cases where
the command is in a queue, disconnect processing may not be executed depending on the processing
content specification of the command.
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