LSI 53C810A - Manual (Page 209)

SCSI Timings 7-27
7.6 SCSI Timings
Tables 7.17 through 7.23 and Figures 7.19 through 7.23 describe the
LSI53C810A SCSI timing data.
Figure 7.19 Initiator Asynchronous Send
Table 7.17 Initiator Asynchronous Send (5 Mbytes/s)
Symbol Parameter Min Max Unit
t
1
SACK/ asserted from SREQ/ asserted 10 – ns
t
2
SACK/ deasserted from SREQ/ deasserted 10 – ns
t
3
Data setup to SACK/ asserted 55 – ns
t
4
Data hold from SREQ/ deasserted 20 – ns
SREQ/
SACK/
SD[7:0],
SDP/
t
1
t
2
t
3
t
4
n + 1
n
Valid n Valid n + 1
n + 1