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LAN91C94 数据表(PDF) 98 Page - SMSC Corporation |
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LAN91C94 数据表(HTML) 98 Page - SMSC Corporation |
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98 / 120 page ![]() 98 FIGURE 23 - ISA CONSECUTIVE WRITE CYCLES VALID ADDRESS VALID ADDRESS t15 t4 t3 t20 A0-15 AEN, nSBHE nIOCS16 nIOWR D0-15 VALID DATA IN VALID DATA t7 t8 ns ns ns ns ns ns t3 t4 t7 t8 t15 t20 25 Address, nSBHE, AEN Setup to Control Acti ve Address, nSBHE, AEN Hol d after Control Inacti ve Data Setup to nIOWR Rising Data Hold after nIOWR Rising A4-A15, AEN Low, B ALE High to nIOCS16 Low Cycle time* Parameter min typ max uni ts 25 20 30 9 185 IOCHRDY not used - t20 has to be met BALE T ied High *Note: The cycle ti me i s defined onl y for consecuti ve accesses to the Data Register. These values assume that IOCHRDY is not used. |
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