User's Guide

40 SCSI Commands
Connect Time Limit – This field indicates the maximum duration of an interconnect tenancy. A value of 0
is returned to indicate that there is no connect time limit.
Maximum Burst Size – This field indicates the maximum amount of data that will be transferred during a
single data transfer operation. The value is expressed in increments of 512 bytes. A value of 0 is returned
if a maximum burst size is not supported.
Enable Modify Data Pointers (EMDP) – This field indicates whether data transfers are allowed to be re-
ordered. A value of 0 is returned to indicate that data transfers will always have continually increasing and
contiguous data relative offset values. A value of 1 is returned to indicate that data transfers can be re-
ordered.
Fair Arbitration – This field indicates whether fair or unfair arbitration is used when requesting an
interconnect tenancy. A value of 000b is returned to indicate that the various fairness algorithms may not
be used.
Disconnect Immediate (DIMM) – A value of 0 is returned to indicate that data may be transferred for a
command during the same interconnect tenancy in which the command was received.
Data Transfer Disconnect Control (DTDC) – A value of 000b is returned to indicate that data transfer
disconnect control is not used.
First Burst Size – This field indicates the maximum amount of data that may be transferred along with a
command. A value of 0 is returned to indicate that there is no first burst size limit.
Fibre Channel Logical Unit Control Page (18h)
The Fibre Channel Logical Unit Control mode page reports logical unit behavior for the Fibre Channel
Protocol. This page is not available on the SCSI interface.
Parameters Savable (PS) - This page is not savable, and this field is set to zero.
Page Code - This field identifies the Fibre Channel Logical Unit Control mode page and returns 18h.
Parameter List Length - This field is set to 06h.
Protocol Identifier – This field returns 0 to indicate the Fibre Channel protocol.
Enable Precise Delivery Checking (EPDC) – If this field returns 0, it indicates that the Fibre Channel
Command Reference Number is not checked to verify that command packets are received in order. If this
field returns 1, it indicates that the precise delivery checking is enabled and that the Fibre Channel
Command Reference Number is checked to verify that command packets are received in order.
Table 38 Fibre Channel Logical Unit Control Page (18h)
Bit
Byte
76543210
0 PS Rsvd Page Code (18h)
1 Parameter List Length = 06h
2 Reserved Protocol Identifier (0h)
3 Reserved EPDC
4 Reserved
5 Reserved
6 Reserved
7 Reserved