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AMD
151Am79C930
Memory Bus Interface Waveforms
20138B-15
MA
n
FCE,
SCE,
XCE
MOE
MD
i
(Din)
t
m
AA
t
m
OE
t
m
AD
MWE
(high)
CLKIN
t
m
RDSC
t
m
ACS
t
m
H
data sampled at this point
valid
t
m
RI
t
m
RDHC
t
m
AD
t
m
CD
t
m
OD
t
m
OLZ
t
m
HZ
CLKOUT
(internal)
t
m
CD
t
m
OD
t
m
AH
t
m
CH
Figure 9. Memory Bus READ Access Timing Diagram
20138B-16
MA
n
FCE,
SCE,
XCE
MOE
MD
o
(Dout)
t
m
AW
t
m
WP
t
m
AD
MWE
(high)
CLKIN
t
m
SW
t
m
CW
t
m
HW
valid
t
m
WI
t
m
HWC
t
m
AD
t
m
CD
t
m
WD
t
m
WQ
t
m
HWZ
CLKOUT
(internal)
t
m
CD
t
m
WD
t
m
HWZC
t
m
AH
t
m
CH
t
m
CQ
t
m
CV
t
m
AS
Figure 10. Memory Bus WRITE Access Timing Diagram