Freescale Semiconductor Evaluation Kit (EVK) for the i.MX51 Applications Processor MCIMX51LCD MCIMX51LCD 数据表
产品代码
MCIMX51LCD
i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 6
126
Freescale Semiconductor
Electrical Characteristics
Figure 83. UDMA Out Device Terminates Transfer Timing Diagram
Table 96. UDMA Out Burst Timing Parameters
ATA
Parameter
Parameter
from
,
Value
Controlling
Variable
tack
tack
tack (min) = (time_ack
×
T) – (tskew1 + tskew2)
time_ack
tenv
tenv
tenv (min) = (time_env
×
T) – (tskew1 + tskew2)
tenv (max) = (time_env
×
T) + (tskew1 + tskew2)
time_env
tdvs
tdvs
tdvs = (time_dvs
×
T) – (tskew1 + tskew2)
time_dvs
tdvh
tdvh
tdvs = (time_dvh
×
T) – (tskew1 + tskew2)
time_dvh
tcyc
tcyc
tcyc = time_cyc
×
T – (tskew1 + tskew2)
time_cyc
t2cyc
—
t2cyc = time_cyc
×
2
×
T
time_cyc
trfs1
trfs
trfs = 1.6
×
T + tsui + tco + tbuf + tbuf
—
—
tdzfs
tdzfs = time_dzfs
×
T – (tskew1)
time_dzfs
tss
tss
tss = time_ss
×
T – (tskew1 + tskew2)
time_ss
tmli
tdzfs_mli
tdzfs_mli =max (time_dzfs, time_mli)
×
T – (tskew1 + tskew2)
—
tli
tli1
tli1 > 0
—
tli
tli2
tli2 > 0
—
tli
tli3
tli3 > 0
—
tcvh
tcvh
tcvh = (time_cvh
×
T) – (tskew1 + tskew2)
time_cvh
—
ton
toff
toff
ton = time_on
×
T – tskew1
toff = time_off
×
T – tskew1
—