Fujitsu MAA3182FC Series, Manual

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C141-E054-02EN 1 - 20
(3) LIP (Loop Initialization on Primitive)
Loop Initialization is generated by sending any LIPs in Table 1.12.
The NL_Port which received a LIP then transmit the LIP to the next port on the loop.
This cycle terminates when the NL_Port that started the initialization process receives the LIP.
Table 1.12 LIP sequences
LIP type Use Description
LIP (F7, F7)
LIP (F7, AL_PS) Initializing
Loop A NL_Port requests to obtain AL_PA *1
LIP (AL_PD, AL_PS) Reset the port The source port (AL_PS) requests to reset the
destination port (AL_PD).
The selected port performs to reset after loop
initialization. *2
LIP (F8, AL_PS) Loop failure The NL_Port has detected an input failure
AL_PS is the AL_PA of the source port. *1
LIP (F8, F7) Loop failure The NL_Port has detected an input failure and
the port could not obtain an AL_PA. *1
Note:
*1: The drive can issue the LIP.
*2: The drive receives the LIP but does NOT issue LIP (AL_PD, AL_PS).
(4) LISM (Loop Initialization Select Master)
This sub-section describes a process to select the loop master to which the function for
proceeding with each process of Loop Initialization is given.
Selecting the loop master proceeds as follows. (Figure 1.11)
Figure 1.11 shows the example that three ports exist on the loop and each port has an unique
Port Name which algebraic relationship is n+2>n+1>n.
Steps [1] through [6] are for selecting a port with the smallest unique port name of those
assigned at manufacture, as the loop master.
Steps [8] and [9] are for confirming that the port, which became the loop master by steps [1]
through [6], has become the loop master again.