PCIMX515CJM6C datasheet(113/184 Pages) FREESCALE

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Electrical Characteristics

i.MX51 Applications Processors for Consumer and Industrial Products, Rev. 1

Freescale Semiconductor

113

Preliminary—Subject to Change Without Notice

Figure 80. UDMA Out Device Terminates Transfer Timing Diagram

Table 83. UDMA Out Burst Timing Parameters

ATA

Parameter

from

Figure 78,

Figure 79,

Figure 80

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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