Technical data

Electrical Characteristics

MCIMX31C/MCIMX31LC Technical Data, Rev. 4.3

Freescale Semiconductor 29

Figure 19. UDMA Out Device Terminates Transfer Timing Diagram

Table 26. UDMA Out Burst Timing Parameters

ATA

Parameter

from

Figure 17,

Figure 18,

Figure 19

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

ton = time_on * T – tskew1

toff = time_off * T – tskew1

—