PCIMX515CJM6C datasheet(109/184 Pages) FREESCALE

109 / 184 page

Electrical Characteristics

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

Freescale Semiconductor

109

Preliminary—Subject to Change Without Notice

Figure 73 shows timing for MDMA read, Figure 74 shows timing for MDMA write, and Table 81 lists

the timing parameters for MDMA read and write.

Figure 73. MDMA Read Timing Diagram

Figure 74. MDMA Write Timing Diagram

Table 81. MDMA Read and Write Timing Parameters

ATA

Parameter

from

Figure 73,

Figure 74

Value

Controlling

Variable

tm, ti

tm (min) = ti (min) = time_m

× T – (tskew1 + tskew2 + tskew5)

time_m

td, td1

td1.(min) = td (min) = time_d

× T – (tskew1 + tskew2 + tskew6)

time_d

tk.(min) = time_k

× T – (tskew1 + tskew2 + tskew6)

time_k

—

t0 (min) = (time_d + time_k)

× T

time_d, time_k

tg(read)

tgr

tgr (min-read) = tco + tsu + tbuf + tbuf + tcable1 + tcable2

tgr.(min-drive) = td – te(drive)

time_d

tf(read)

tfr

tfr (min-drive) = 0

—

tg(write)

—

tg (min-write) = time_d

× T – (tskew1 + tskew2 + tskew5)

time_d

tf(write)

—

tf (min-write) = time_k

× T – (tskew1 + tskew2 + tskew6)

time_k

—

tL (max) = (time_d + time_k–2)

×T – (tsu + tco + 2×tbuf + 2×tcable2)

time_d, time_k

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