IMX53CEC datasheet(114/204 Pages) FREESCALE

114 / 204 page

i.MX53xD Applications Processors for Consumer Products, Rev. 2

114

Freescale Semiconductor

Electrical Characteristics

Figure 66 shows timing for MDMA read, Figure 67 shows timing for MDMA write, and Table 74 lists

the timing parameters for MDMA read and write.

Figure 66. MDMA Read Timing Diagram

Figure 67. MDMA Write Timing Diagram

Table 74. MDMA Read and Write Timing Parameters

ATA

Parameter

Parameter from

Figure 66 (Read),

Figure 67 (Write)

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

tk1

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) = 5 ns

—

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_k2

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