Figure 11. Last Command Byte, Disconnect Message, Bus Free And Reselection - Seagate MEDALIST 1080SL Product Manual

114 Medalist 1080sl SCSI Product Manual, August 1995
0
Last byte
DB(7–0,P)–
1
0
ATN–
1
0
SEL–
1
0
BUSY–
1
0
I/O–
1
0
MSG–
1
0
C/D–
1
0
REQ–
1
0
ACK–
1
Figure 11. Last command byte, disconnect message, bus free and
reselection
Description
Command to disconnect
message
Disconnect message to bus free
Disconnect to arbitration
(for reselect). Measures
disconnected command
overhead.
* When measuring T11, no other device can be contending for the SCSI
bus.
Disconnect
T09 T10
Symbol Typical
T09 Command-dependent
T10 <100 sec
T11 * Command-dependent
Arb. ID
T11
Max
—