Timing Examples - Seagate SCSI Interface Product Manual

SCSI Interface Product Manual, Rev. J
4.5

Timing examples

Times (T00 through T35) necessary to define performance are listed in the individual drive's Product Manual,
Volume 1, in the "Disc drive SCSI timing" section. Timing waveforms to define these times are illustrated in
Tables 19 through 33.
Table 19: Arbitration, Selection (No ATN), and Command Phase
0
BUS
0-7*
1
0
-ATN
1
0
-SEL
1
0
-BUSY
1
0
-I/O
1
0
1
-MSG
0
1
-C/D
0
-REQ
1
0
-ACK
1
* and 8-15 if applicable
INIT ID INIT & TARG ID
T01
1ST BYTE
T02
51