4-13
Bus settle
delay
BSY
SCSI SEL
DB
BSY
ID7 SEL
DB(7)
BSY
ID3 SEL
DB(3)
BSY
ID1 SEL
DB(1)
ID7: Succeeds in ARBITRATION
ID3: Detects the SEL signals of other SCSI unit
ID1: Detects the SCSI ID with higher priority than itself
: The point at which the BUS FREE phase is detected by each SCSI unit
∇
Bus clear delay +
bus settle delay
arbitration delay
arbitration delay
Bus clear delay
Bus set delay
Bus set delay
Bus free
delay
Bus free
delay
Bus free
delay
Bus free
delay
ARBITRATION phase
∇
∇
∇