Target Asynchronous Receive; Scsi-1 Transfers (5.0 Mbytes) - LSI LSI53C875A Technical Manual

Table 6.40

Target Asynchronous Receive

Symbol Parameter
t SREQ/ deasserted from SACK/ asserted
1
t SREQ/ asserted from SACK/ deasserted
2
t Data setup to SACK/ asserted
3
t Data hold from SREQ/ deasserted
4
Figure 6.36 Target Asynchronous Receive
SREQ/
SACK/
SD[15:0]/,
SDP[1:0]/
Table 6.41

SCSI-1 Transfers (5.0 Mbytes)

Symbol Parameter
t Send SREQ/ or SACK/ assertion pulse width
1
t Send SREQ/ or SACK/ deassertion pulse width
2
t Receive SREQ/ or SACK/ assertion pulse width
1
t Receive SREQ/ or SACK/ deassertion pulse width
2
t Send data setup to SREQ/ or SACK/ asserted
3
t Send data hold from SREQ/ or SACK/ asserted
4
t Receive data setup to SREQ/ or SACK/ asserted
5
t Receive data hold from SREQ/ or SACK/ asserted
6
n
t
1
n
t
3
Valid n
SCSI Timing Diagrams
t
2
t
4
Min Max
5 –
5 –
0 –
0 –
n + 1
n + 1
Valid n + 1
Min Max
80 –
80 –
70 –
70 –
24 –
54 –
14 –
24 –
Unit
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
ns
ns
6-55