IMX35 datasheet(108/148 Pages) FREESCALE

108 / 148 page

i.MX35 Applications Processors for Industrial and Consumer Products, Rev. 6

Freescale Semiconductor

108

Figure 85. UDMA-Out Device Terminates Transfer Timing Diagram

Table 69. UDMA-Out Burst Timing Parameters

ATA

Parameter

from

Figure 83,

Figure 84,

Figure 85

Value

Controlling

Variable

tack

tack (min.) = (time_ack

× T) – (tskew1 + tskew2)

time_ack

tenv

tenv (min.) = (time_env

× T) – (tskew1 + tskew2)

tenv (max.) = (time_env

× T) + (tskew1 + tskew2)

time_env

tdvs

tdvs = (time_dvs

×T) – (tskew1 + tskew2)

time_dvs

tdvh

tdvs = (time_dvh

× T) – (tskew1 + tskew2)

time_dvh

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 = 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 = (time_cvh

× T) – (tskew1 + tskew2)

time_cvh

—ton

toff

ton = time_on

× T – tskew1

toff = time_off

× T – tskew1

—

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