MPC5123 datasheet(55/86 Pages) FREESCALE

55 / 86 page

Electrical and Thermal Characteristics

MPC5121E/MPC5123 Data Sheet, Rev. 4

Freescale Semiconductor

Figure 34. UDMA Out Device Terminates Transfer

Timing parameters are explained in Table 30.

Table 30. Timing Parameters UDMA Out Burst

ATA

Parameter

UDMA Out

Timing

Parameter

Value

How to meet

SpecID

tack

tack(min) = (time_ack × T) – (tskew1 +tskew2)

calculate and

programming

time_ack. 1

A9.63

tenv

tenv(min) = (time_env × T) – (tskew1 +tskew2)

tenv(max) = (time_env × T) + (tskew1 +tskew2)

calculate and

programming

time_env. 1

A9.64

tdvs

tdvs = (time_dvs × T) – (tskew1 +tskew2)

calculate and

programming

time_dvs. 1

A9.65

tdvh

tdvs = (time_dvh × T) – (tskew1 +tskew2)

calculate and

programming

time_dvh. 1

A9.66

tcyc

tcyc =time_cyc ×T – (tskew1 +tskew2)

calculate and

programming

time_cyc. 1

A9.67

t2cyc

—

t2cyc = time_cyc × 2 × T

calculate and

programming

time_cyc. 1

A9.68

trfs1

trfs1 =1.6 ×T+tsui +tco +tbuf +tbuf

—

A9.69

ADDR

DMARQ

DMACK

DIOW

DIOR

Data Write

IORDY

buffer_en

tack

tcyc

tdzfs_mli

tcvh

toff

tli2

trfs1

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