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21020285 D User’s Guide
Chapter 7 Board-control Commands
Page 7 - 38 Board Information (15H)
Per Target - Disconnect Time-out
If Disconnects are enabled for the target with the General Options command,
this field represents the amount of time the adapter will wait for a reconnect
before taking error recovery action. For more information, refer to the section
of this chapter that explains the General Options, Unit Options, and Extended
Unit Options commands.
Per Target - Retry Limit
This field specifies the maximum number of retries the RF3880 will attempt
before reporting an error. This value is set for each target with the Unit Options
or Extended Unit Options command.
Per Target - Sense Count
This field reports the number of Sense bytes that the adapter will return for this
target. This number is defined by the Unit Options or Extended Unit Options
commands.
Per Target - Device Flags
The Device Flags field is a word wide. It reports the options that you have
selected for this target with the Unit Options or Extended Unit Options
command. The format is as shown below:
UNQ Untagged Queuing - This bit indicates whether the RF3880 will queue
commands to a target with multiple LUN’s.
0 ⇒ One command at a time will be sent to this target.
1 ⇒ Commands to this target will be queued; it has multiple LUN’s.
SYN Synchronous Negotiation - This bit indicates whether negotiations
for synchronous transfers will be initiated for this target.
0 ⇒ Synchronous transfer negotiation will not be initiated by adapter.
1 ⇒ Adapter will initiate synchronous transfer negotiations.
IAT Inhibit ATN Signal - This bit indicates if the adapter is to assert the ATN
signal.
0 ⇒ Adapter will assert ATN for this target.
1 ⇒ Adapter will not assert ATN for this target.
WID Wide Transfers - This bit indicates whether negotiations for wide data
transfers will be initiated for this target.
0 ⇒ Wide data transfer negotiations will not be initiated by the adapter.
1 ⇒ Adapter will initiate wide data transfer negotiations.
BITS
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 SS 0 RBE RCE RPE ISB INT 0 TQE 0 0 WID IAT SYN UNQ
Table 99: Bit-meanings of Device Flags Field