AMD Am79C930 User Manual

Page 151

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P R E L I M I N A R Y

AMD

151

Am79C930

Memory Bus Interface Waveforms

20138B-15

MAn

FCE,

SCE,

XCE

MOE

MDi (Din)

tmAA

tmOE

tmAD

MWE

(high)

CLKIN

tmRDSC

tmACS

tmH

data sampled at this point

valid

tmRI

tmRDHC

tmAD

tmCD

tmOD

tmOLZ

tmHZ

CLKOUT

(internal)

tmCD

tmOD

tmAH

tmCH

Figure 9. Memory Bus READ Access Timing Diagram

20138B-16

MAn

FCE,

SCE,

XCE

MOE

MDo

(Dout)

tmAW

tmWP

tmAD

MWE

(high)

CLKIN

tmSW

tmCW

tmHW

valid

tmWI

tmHWC

tmAD

tmCD

tmWD

tmWQ

tmHWZ

CLKOUT

(internal)

tmCD

tmWD

tmHWZC

tmAH

tmCH

tmCQ
tmCV

tmAS

Figure 10. Memory Bus WRITE Access Timing Diagram

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