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Data Overlay Allow
39
Not supported by the drive. The Data Overlay Allowed bit is not checked.
Data/Response Mix Allowed
39
1
Allows the drive to send the FCP RSP in the same sequence as the data. The drive does not support the Data/
Response Mix. It will accept a PRLI with the Allow bit set, but will return zero (0) in the accept to indicate the function
cannot be used.
Establish Image Pair
39
1
The drive establishes a SCSI login for the initiator.
0
The PRLI is only an inquiry of the drive's support of the process. The accept is still returned, but the login is not
retained.
Initiator Function
39
Must be set to one (1) for the drive to accept the login request.
LS Command Code (Link Services Command Code)
39
20h
PRLI Payload.
Orig Proc Assc Valid (Originator Process Associator Valid)
39
Not supported by the drive. Not checked by the drive.
Page Length
39
Length of the service parameter page (in bytes). For a SCSI FCP service page, the length is 10h.
Payload Length
39
Length of PRLI payload (in bytes). The count includes the LS Command Code. The drive supports one service parameter
page per PRLI.
The Payload Length must be 14h (20 decimal).
RD XFR RDY Disable (Read Transfer Ready Disable)
39
1
FCP_XFR_RDY will not be sent before read data. The drive requires this bit to be set to one (1).
Resp Proc Assc Valid (Responder Process Associator Valid)
39
Not supported by the drive. Not checked by the drive.
Target Function
39
May be set in addition to the Initiator Function bit. The drive does not check this bit.
Type Code
39
08h
SCSI FCP process as included in the frame header for FCP frames.
Type Code Extension
39
0
Not defined for SCSI FCP and must be set to zero (0).
WR XFR RDY Disable (Write Transfer Ready Disable)
39
0
The drive requires this bit to be set to zero (0). The drive also requires the use of the WR_XFR_RDY bit.
Fibre Channel Interface Manual, Rev. D
73
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