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2 multiword data transfer – FUJITSU MHR2030AT User Manual

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Interface

5-128

C141-E145-02EN

5.6.2 Multiword data transfer

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

Symbol

Timing parameter

Min.

Max.

Unit

t0

Cycle time

120

ns

tD

Pulse width of DIOR-/DIOW-

70

ns

tE

Data setup time for DIOR-

50

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

Figure 5.10 Multiword DMA data transfer timing (mode 2)

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