Interface

5.6.2 Multiword data transfer

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

DMACK-

tI

DIOR-/DIOW-

tD

Symbol

Timing parameter

Min.

Max.

Unit

 

 

 

 

 

t0

Cycle time

120

ns

 

 

 

 

 

tD

Pulse width of DIOR-/DIOW-

70

ns

 

 

 

 

 

tE

Data Access time for DIOR-

50

ns

 

 

 

 

 

tF

Data hold time for DIOR-

5

ns

 

 

 

 

 

tG

Data setup time for DIOR-/DIOW-

20

ns

 

 

 

 

 

tH

Data hold time for DIOW-

10

ns

 

 

 

 

 

tI

DMACK setup time for DIOR-/DIOW-

0

ns

 

 

 

 

 

t

CS (1:0) Available time for DIOR-/DIOW-

25

ns

 

 

 

 

 

Figure 5.10 Multiword DMA data transfer timing (mode 2)

5-150

C141-E218

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Fujitsu MHV2080AT, MHV2100AT, MHV2120AT, MHV2040AT manual Multiword data transfer, Multiword DMA data transfer timing mode