Memory Bus Interface Waveforms - AMD Am79C930 Preliminary Manual

Memory Bus Interface Waveforms

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