Fujitsu MHN2150AT Manual Do Utilizador

5-112

C141-E120-02EN

Figure 5.10 shows the multiword DMA data transfer timing between the device
and the host system.

tF

tE

tH

tG

tJ

tD

tI

tC

t0

Read data
DD0-DD15

Write data
DD0-DD15

DIOR-/DIOW-

DMACK-

DMARQ

tK

Symbol

Timing parameter

Min.

Max.

Unit

t0

Cycle time

  120

—

ns

tC

Delay time from DMACK assertion to DMARQ negation

—

35

ns

tD

Pulse width of DIOR-/DIOW-

    70

—

ns

tE

Data setup time for DIOR-

—

30

ns

tF

Data hold time for DIOR-

      5

—

ns

tG

Data setup time for DIOW-

    20

—

ns

tH

Data hold time for DIOW-

    10

—

ns

tI

DMACK setup time for DIOR-/DIOW-

      0

—

ns

tJ

DMACK hold time for DIOR-/DIOW-

      5

—

ns

tK

Continuous time of high level for DIOR-/DIOW-

    25

—

ns