MCIMX31LCVKN5D Freescale, MCIMX31LCVKN5D Datasheet - Page 31
MCIMX31LCVKN5D
Manufacturer Part Number
MCIMX31LCVKN5D
Description
Manufacturer
Freescale
Datasheet
1.MCIMX31LCVKN5D.pdf
(118 pages)
Specifications of MCIMX31LCVKN5D
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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2. Make ton and toff big enough to avoid bus contention
Freescale Semiconductor
There is a special timing requirement in the ATA host that requires the internal DIOW to go only high 3 clocks after the last
active edge on the DSTROBE signal. The equation given on this line tries to capture this constraint.
Parameter
tdzfs
ATA
tenv
tzah
tack
tcyc
tcvh
tmli
tds
tdh
trp
—
—
Parameter
Figure
Figure
Figure 16
from
tmli1
tdzfs
tds1
tdh1
tzah
tack
tenv
tx1
tcvh
tc1
ton
toff
trp
Figure 16. UDMA In Device Terminates Transfer Timing Diagram
1
14,
15,
tack (min) = (time_ack * T) – (tskew1 + tskew2)
tenv (min) = (time_env * T) – (tskew1 + tskew2)
tenv (max) = (time_env * T) + (tskew1 + tskew2)
tds – (tskew3) – ti_ds > 0
tdh – (tskew3) – ti_dh > 0
(tcyc – tskew) > T
trp (min) = time_rp * T – (tskew1 + tskew2 + tskew6)
(time_rp * T) – (tco + tsu + 3T + 2 *tbuf + 2*tcable2) > trfs (drive)
tmli1 (min) = (time_mlix + 0.4) * T
tzah (min) = (time_zah + 0.4) * T
tdzfs = (time_dzfs * T) – (tskew1 + tskew2)
tcvh = (time_cvh *T) – (tskew1 + tskew2)
ton = time_on * T – tskew1
toff = time_off * T – tskew1
Table 27. UDMA In Burst Timing Parameters
MCIMX31/MCIMX31L Technical Data, Rev. 4.3
Description
Electrical Characteristics
should be low enough
Controlling Variable
tskew3, ti_ds, ti_dh
T big enough
time_dzfs
time_mlix
time_ack
time_env
time_zah
time_cvh
time_rp
time_rp
—
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