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FDC37M607 Datasheet(PDF) 166 Page - SMSC Corporation |
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FDC37M607 Datasheet(HTML) 166 Page - SMSC Corporation |
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166 / 182 page ![]() 166 FIGURE 13B - EPP 1.9 DATA OR ADDRESS READ CYCLE TIMING PARAMETERS NAME DESCRIPTION MIN TYP MAX UNITS t1 PDATA Hi-Z to Command Asserted 0 30 ns t2 nIOR Asserted to PDATA Hi-Z 0 50 ns t3 nWAIT Deasserted to Command Deasserted (Note 1) 60 180 ns t4 Command Deasserted to PDATA Hi-Z 0 ns t5 Command Asserted to PDATA Valid 0 ns t6 PDATA Hi-Z to nWAIT Deasserted 0 µs t7 PDATA Valid to nWAIT Deasserted 0 ns t8 nIOR Asserted to IOCHRDY Asserted 0 24 ns t9 nWRITE Deasserted to nIOR Asserted (Note 2) 0 ns t10 nWAIT Deasserted to IOCHRDY Deasserted (Note 1) 60 160 ns t11 IOCHRDY Deasserted to nIOR Deasserted 0 ns t12 nIOR Deasserted to SDATA Hi-Z (Hold Time) 0 40 ns t13 PDATA Valid to SDATA Valid 0 75 ns t14 nWAIT Asserted to Command Asserted 0 195 ns t15 Time Out 10 12 µs t16 nWAIT Deasserted to PDATA Driven (Note 1) 60 190 ns t17 nWAIT Deasserted to nWRITE Modified (Notes 1,2) 60 190 ns t18 SDATA Valid to IOCHRDY Deasserted (Note 3) 0 85 ns t19 Ax Valid to nIOR Asserted 40 ns t20 nIOR Deasserted to Ax Invalid 10 10 ns t21 nWAIT Asserted to nWRITE Deasserted 0 185 ns t22 nIOR Deasserted to nIOW or nIOR Asserted 40 ns t23 nWAIT Asserted to PDIR Set (Note 1) 60 185 ns t24 PDATA Hi-Z to PDIR Set 0 ns t25 nWAIT Asserted to PDATA Hi-Z (Note 1) 60 180 ns t26 PDIR Set to Command 0 20 ns t27 nWAIT Deasserted to PDIR Low (Note 1) 60 180 ns t28 nWRITE Deasserted to Command 1 ns Note 1: nWAIT is considered to have settled after it does not transition for a minimum of 50 ns. Note 2: When not executing a write cycle, EPP nWRITE is inactive high. Note 3: 85 is true only if t7 = 0. |
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