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IMX35 датащи(PDF) 103 Page - Freescale Semiconductor, Inc |
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IMX35 датащи(HTML) 103 Page - Freescale Semiconductor, Inc |
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103 / 148 page ![]() i.MX35 Applications Processors for Industrial and Consumer Products, Rev. 6 Freescale Semiconductor 103 Figure 77 shows timing for PIO write, and Table 66 lists the timing parameters for PIO write. Figure 77. PIO Write Timing Diagram Table 66. PIO Write Timing Parameters ATA Parameter Parameter from Figure 77 Value Controlling Variable t1 t1 t1 (min.) = time_1 × T – (tskew1 + tskew2 + tskew5) time_1 t2 t2w t2 (min.) = time_2w × T – (tskew1 + tskew2 + tskew5) time_2w t9 t9 t9 (min.) = time_9 × T – (tskew1 + tskew2 + tskew6) time_9 t3 — t3 (min.) = (time_2w – time_on) × T – (tskew1 + tskew2 +tskew5) If not met, increase time_2w t4 t4 t4 (min.) = time_4 × T – tskew1 time_4 tA tA tA = (1.5 + time_ax) × T – (tco + tsui + tcable2 + tcable2 + 2*tbuf) time_ax t0 — t0(min.) = (time_1 + time_2 + time_9) × T time_1, time_2r, time_9 — — Avoid bus contention when switching buffer on by making ton long enough. — — — Avoid bus contention when switching buffer off by making toff long enough. — |
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