3 ac characteristics, Table 3.16 clock timing, Figure3.12 clock timing – Avago Technologies LSI53C180 User Manual
Page 51: 4 scsi interface timing, Table 3.17 input timing - single transition, Ac characteristics, Scsi interface timing, Clock timing, Input timing - single transition
Advertising
Electrical Characteristics
3-17
3.2.3 AC Characteristics
The AC characteristics described in this section apply over the entire
range of operating conditions (refer to DC Characteristics in this chapter).
Chip timing is based on simulation at worst case voltage, temperature,
and processing. The LSI53C180 requires a 40 MHz clock input.
Figure 3.12 Clock Timing
3.2.4 SCSI Interface Timing
Table 3.16
Clock Timing
Symbol
Parameter
Min
Max
Units
t
1
Clock period
24.75
25.25
ns
t
2
Clock low time
10
15
ns
t
3
Clock high time
10
15
ns
t
4
Clock rise time
1
–
V/ns
Clock
t
1
t
3
t
4
t
2
Table 3.17
Input Timing - Single Transition
Symbol
Parameter
Min
Max
Units
t
ST1
Input data setup
4.5
–
ns
t
ST2
Input data hold
4.5
–
ns
t
ST3
Input REQ/ACK assertion pulse width
6.5
–
ns
t
ST4
Input REQ/ACK deassertion pulse width
6.5
–
ns
Advertising