Mode Select (6)
60 SL150 Interface Reference Manual Julyl 2017
Connect Time Limit The field indicates the maximum duration of a single interconnect tenancy,
measured in increments of 128 transmission words.
• 0000h indicates that there is no connect time limit.
Maximum Burst Size This field indicates the maximum size of FCP_DATA IU that the device server shall
transfer to the initiator or request from the initiator. This value is expressed in
increments of 512 bytes.
• 0000h indicates there is no limit on the amount of data transferred per
data transfer operation.
EMPD The Enable Modify Data Pointers bit indicates whether or not the target may use
the random buffer access capability to reorder FCP_DATA IUs for a single SCSI
command.
• 0 = The target shall generate continuously increasing relative offset
values for each FCP_DATA IU for a single SCSI command.
• 1 = The target may transfer the FCP_DATA IUs for a single SCSI
command in any order.
FAA, FAB, FAC The fairness access (FA) bits, FAA, FAB, and FAC, indicate whether a target in a
loop configuration shall use the access fairness algorithm. A value of 0 indicates
that the target does not use fairness, while a value of 1 indicates that the target
does use a fairness algorithm.
• The FAA bit controls arbitration when the target wishes to send one or
more FCP_DATA IU frames to an initiator.
• The FAB bit controls arbitration when the initiator wishes to send one
or more FCP_XFER_RDY IU frames to a target.
• The FAC bit controls arbitration when the target wishes to send an
FCP_RSP IU frame to an initiator.
First Burst Size This field value is expressed in increments of 512.
• 0000h indicates that there is no first burst size limit.
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