Datasheet

2.7 Command Processing Exceptions
C141-C008 2-27
3. LIP (F8, F7), LIP (F8, ALPS): LIP that is output when the device recognizes
that the loop has been disconnected for some reason.
LIP can implement loop initialization of all FC devices connected on the same FC
LOOP and can return the state of the loop to the normal state.
LIP (YX) initializes the only specific FC device (TARG) selected by the INIT to
the same state as when the power is turned on. All commands which are currently
being executed or which are queued are cleared and all connections with all
connected INITs are broken.
Therefore, after issuing LIP (YX), it is always necessary to establish logical
connections (PLOGI/PRLI).
(2) TARGET RESET
This processing is the same as the processing of SCSI equivalent messages, as can
be understood from Table 2.10.
However, this processing is transferred to the IDD by the FCP_CMND frame, and
after processing is completed, notification is made of completion by the
FCP_RSP frame.
IDD (Drive side)INIT (Initiator side)
FCP_RSP
FCP_CMND (target reset)
Figure 2.6 TARGET RESET outline sequence
TARGET RESET can be used to reset only the specific FC device (TARG)
selected by the INIT, and can initialize it to the same state as when the TARG's
power is turned on, but in a multi-initiator environment, it is necessary to exercise
caution, because all the commands, including commands issued by other INITs,
are cleared.
(3) CLEAR TASK SET
This processing is the same as the processing of SCSI equivalent messages, as can
be understood from Table 2.10.
However, this processing is transferred to the IDD by the FCP_CMND frame, and
after processing is completed, notification is made of completion by the
FCP_RSP frame.
The operation sequence is the same as that in Figure 2.6.
CLEAR TASK SET clears all commands which are currently being executed or
which are queued. The previously set environment and conditions such as the
MODE SELECT parameters are not changed.