MCIMX31LITEKITC Freescale Semiconductor, MCIMX31LITEKITC Datasheet - Page 30
MCIMX31LITEKITC
Manufacturer Part Number
MCIMX31LITEKITC
Description
BOARD DEV FOR I.MX31
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheet
1.MCIMX31LITEKITC.pdf
(122 pages)
Specifications of MCIMX31LITEKITC
Contents
Module and Misc Hardware
For Use With/related Products
i.MX31
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Electrical Characteristics
Figure 13
timing parameters for MDMA read and write.
30
Parameter
ATA
—
—
tA
t1
t2
t9
t3
t4
t0
shows timing for MDMA read,
from
Parameter
Figure 12
t2w
—
tA
—
—
—
t1
t9
t4
t1 (min) = time_1 * T – (tskew1 + tskew2 + tskew5)
t2 (min) = time_2w * T – (tskew1 + tskew2 + tskew5)
t9 (min) = time_9 * T – (tskew1 + tskew2 + tskew6)
t3 (min) = (time_2w – time_on)* T – (tskew1 + tskew2 +tskew5)
t4 (min) = time_4 * T – tskew1
tA = (1.5 + time_ax) * T – (tco + tsui + tcable2 + tcable2 + 2*tbuf)
t0(min) = (time_1 + time_2 + time_9) * T
Avoid bus contention when switching buffer on by making ton long enough.
Avoid bus contention when switching buffer off by making toff long enough.
Figure 12. Multiword DMA (MDMA) Timing
MCIMX31/MCIMX31L Technical Data, Rev. 4.1
Table 26. PIO Write Timing Parameters
Figure 14
shows timing for MDMA write, and
Value
Freescale Semiconductor
Table 27
If not met, increase
time_1, time_2r,
Controlling
Variable
time_2w
time_2w
time_ax
time_9
time_4
time_9
time_1
—
—
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