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PCI and External Memory Interface Timing Diagrams 6-37
Figure 6.23 External Memory Read (Cont.)
MAD
(Addr driven by LSI53C875A;
Data driven by Memory)
11 12 13 14 15 16 17 18 19 20 2110
CLK
(Driven by System)
PA R
(Driven by Master-Addr;
IRDY/
(Driven by Master)
TRDY/
(Driven by LSI53C875A)
STOP/
(Driven by LSI53C875A)
DEVSEL/
(Driven by LSI53C875A)
AD
(Driven by Master-Addr;
C_BE[3:0]/
(Driven by Master)
FRAME/
(Driven by Master)
LSI53C875A-Data)
LSI53C875A-Data)
MAS1/
(Driven by LSI53C875A)
MAS0/
(Driven by LSI53C875A)
MWE/
(Driven by LSI53C875A)
MOE/
(Driven by LSI53C875A)
MCE/
(Driven by LSI53C875A)
Out
Data
Data
Out
Byte Enable
Lower
Address
t
3
t
3
t
2
t
2
t
3
t
3
t
19
t
17
t
15
t
14
t
16
In
9