LSI 53C875A User Manual
PCI and External Memory Interface Timing Diagrams
6-43
Figure 6.26 Normal/Fast Memory (
≥
=
128 Kbytes) Single Byte Access Write Cycle
Table 6.32
Normal/Fast Memory (
≥
=
128 Kbytes) Single Byte Access Write Cycle
Symbol
Parameter
Min
Max
Unit
t
11
Address setup to MAS/ HIGH
25
–
ns
t
12
Address hold from MAS/ HIGH
15
–
ns
t
13
MAS/ pulse width
25
–
ns
t
20
Data setup to MWE/ LOW
30
–
ns
t
21
Data hold from MWE/ HIGH
20
–
ns
t
22
MWE/ pulse width
100
–
ns
t
23
Address setup to MWE/ LOW
60
–
ns
t
24
MCE/ LOW to MWE/ HIGH
120
–
ns
t
25
MCE/ LOW to MWE/ LOW
25
–
ns
t
26
MWE/ HIGH to MCE/ HIGH
25
–
ns
CLK
MAD
(Driven by LSI53C875A)
MAS1/
(Driven by LSI53C875A)
MAS0/
(Driven by LSI53C875A)
MCE/
(Driven by LSI53C875A)
MOE/
(Driven by LSI53C875A)
MWE/
(Driven by LSI53C875A)
t
11
t
12
t
13
t
23
t
24
t
20
Higher
Address
1.
2.
1. Middle Address
2. Lower Address
Valid Write Data
t
22
t
21
t
26
t
25