參數(shù)資料
型號(hào): MCIMX31_07
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Multimedia Applications Processors
中文描述: 多媒體應(yīng)用處理器
文件頁數(shù): 23/108頁
文件大?。?/td> 1235K
代理商: MCIMX31_07
Electrical Characteristics
i.MX31/i.MX31L Advance Information, Rev. 2.3
Freescale Semiconductor
23
Figure 10
shows timing for PIO write, and
Table 22
lists the timing parameters for PIO write.
Figure 10. Multiword DMA (MDMA) Timing
Table 21. PIO Read Timing Parameters
ATA
Parameter
Parameter
from
Figure 9
Value
Controlling
Variable
t1
t1
t1 (min) = time_1 * T - (tskew1 + tskew2 + tskew5)
time_1
t2
t2r
t2 min) = time_2r * T - (tskew1 + tskew2 + tskew5)
time_2r
t9
t9
t9 (min) = time_9 * T - (tskew1 + tskew2 + tskew6)
time_3
t5
t5
t5 (min) = tco + tsu + tbuf + tbuf + tcable1 + tcable2
If not met, increase
time_2
t6
t6
0
tA
tA
tA (min) = (1.5 + time_ax) * T - (tco + tsui + tcable2 + tcable2 + 2*tbuf)
time_ax
trd
trd1
trd1 (max) = (-trd) + (tskew3 + tskew4)
trd1 (min) = (time_pio_rdx - 0.5)*T - (tsu + thi)
(time_pio_rdx - 0.5) * T > tsu + thi + tskew3 + tskew4
time_pio_rdx
t0
t0 (min) = (time_1 + time_2 + time_9) * T
time_1, time_2r, time_9
Table 22. PIO Write Timing Parameters
ATA
Parameter
Parameter
from
Figure 10
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
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