Datasheet

1.9 FC-4 Device Data
C141-C008 1-91
(6) SEQ_ID.. (Sequence Identifier)
− In case of transferred Data Frame from the initiator to the drive, the drive
has the memory of the first frame SEQ_ID of the sequence and checks
the frame SEQ_ID belonging to the sequence.
− In case of the drive sends to the initiator the data frame, the drive
institutes 00h to SEQ_ID in the first sequence. In case of issuing the
sequence on and after twice in the command (exchange), SEQ_ID is
used the added value one.
(7) DF_CTL.. (Data Field Control)
Set 00h because no optional header is used.
(8) SEQ_CNT.. (Sequence Count)
− 0000h is instituted in the transferred first data frame by the command.
Whatever used multiple sequences by transferring the data on CMD, the
drive demands that the SEQ_CNT value is lasted in the whole
transferring data.
(9) OX_ID.. (Originator Exchange Identifier)
− The assigned value by the initiator to FCP_CMND.
(10) RX_ID.. (Responder Identifier)
Set FFFFh to indicate that RX_ID is unused.
(11) Parameter (Relative Offset)
It can be used as the Relative Offset in FCP Data
The drive does not check received this field of data frame.
The drive do for the continuous added value in this field of sending data
frame.
The header field of the FCP DATA is used for transferring the defined
information in the user data, SCSI protocol.