Figure 1.51 State Of Level-1 Scam Target - Fujitsu MBA3073 SERIES Technical Manual

(2) Level-1 SCAM target
Figure 1.51 shows the operations of level-1 SCAM target. Its status names are explained later.
The RESET condition can terminate all operations in any status, and it forces the SCAM target to
the Reset Delay status.
Power-on
Power-on Delay
Detection of
SCAM protocol
Unassingned
The SCAM target enters the Power-On Delay status immediately after the power-on, and allows
the local initialization to start. The SCAM target shall exit this status, and enter the SCAM
Monitor status within the delay time between SCAM power-on and SCAM selection.
During SCAM Monitor status, the SCAM target shall monitor the SCSI bus for both SCAM
selection and normal SCSI selection. When the SCAM target detects the start of SCAM protocol,
it shall enter the ID Assignable status. If the SELECTION phase of the current IDs of SCAM
target continues to valid during at least the response delay of SCAM unassigned ID selection, this
SCAM target shall respond to the selection and assert the BSY signal. The SCAM target shall
implicitly enter the ID Assigned status as if its ID assignment was explicitly accepted. The
assigned ID is set as the current ID, and the SCAM target functions as the SCAM tolerant device.
The SCAM target continues in the ID Assignable status as long as the SCAM protocol is
controlled. It continues until the status is changed by the SCAM function. When the SCAM
target is separated and its Assign ID action code is received, the specified ID is set to the current
and already assigned ID. The SCAM target releases all SCSI bus signals, and enters the Assigned
ID status. When the SCAM target receives a Configuration Process Complete function code or
the SCAM protocol has ended (if the C/D signal becomes false), the target shall release all SCSI
bus signals and enter the ID Unassigned status.
1-65
SCAM
Monitor
Detection of
SCAM protocol
ID
Assingnable
Configuration
Process Complete
or false C/D
ID

Figure 1.51 State of level-1 SCAM target

Reset
Reset Delay
Current ID
assignment by
SCSI selection
ID assignment
by using action
codes
ID
Assingned
C141-C007