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LAN91C100FD 数据表(PDF) 68 Page - SMSC Corporation |
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LAN91C100FD 数据表(HTML) 68 Page - SMSC Corporation |
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68 / 79 page ![]() FEAST Fast Ethernet Controller with Full Duplex Capability Rev. 10/14/2002 Page 68 SMSC DS – LAN91C100FD Rev. D PRELIMINARY Figure 9.2 - Asynchronous Cycle - Using nADS PARAMETER MIN TYP MAX UNITS t1 A1-A15, AEN, nBE0-nBE3 Valid and nADS Low Setup to nRD, nWR Active 25 ns t3 nRD Low to Valid Data 40 ns t4 nRD High to Data Floating 30 ns t5 Data Setup to nWR Inactive 30 ns t5A Data Hold After nWR Inactive 5 ns t8 A1-A15, AEN, nBE0-nBE3 Setup to nADS Rising 10 ns t9 A1-A15, AEN, nBE0-nBE3 Hold after nADS Rising 15 ns t8 t9 t5 t3 t4 t1 t5A A1-A15, AEN, nBE0-nBE3 valid D0-D31 valid ADDRESS nADS READ DATA nRD, nWR WRITE DATA |
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