SMC Networks SMC91C95 Bedienungsanleitung PDF herunterladen (Seite 119)

119

FIGURE 27 - ISA CONSECUTIVE READ CYCLES

BALE Tied High

VALID ADDRESS

VALID DATA

OUT

VALID DATA

OUT

t15

t20

A0-15

AEN, nSBHE

nIOCS16

nIORD

D0-15

t15

t20

Address, nSBHE, AEN Setup to Control Active

Address, nSBHE, AEN Hold after Control

Inactive

nIORD Low to Valid Data

nIORD High to Data Floating

A4-A15, AEN Low, BALE High to nIOCS16

Low

Cycle time*

Parameter

min

typ

max

units

185

IOCHRDY not used - t20 has to be met

*Note: The cycle time is defined only for consecutive accesses to the Data Register. These values assume

that IOCHRDY is not used.

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SMC Networks SMC91C95 Bedienungsanleitung Seite 119