Multiword Data Transfer; Figure 5.10 Multiword Dma Data Transfer Timing (Mode 2) - Fujitsu MHW2040AC Product Manual

Interface

5.6.2 Multiword data transfer

Figure 5.10 shows the multiword DMA data transfer timing between the device
and the host system.
CS0-/CS1-
DMARQ
DMACK-
DIOR-/DIOW-
Read
DD(15:0)
Write
DD(15:0)
Symbol
t Pulse width of DIOR-/DIOW-
D
t Data Access time for DIOR-
E
t Data hold time for DIOR-
F
t Data setup time for DIOR-/DIOW-
G
t Data hold time for DIOW-
H
t DMACK setup time for DIOR-/DIOW-
I
t CS (1:0) Available time for DIOR-/DIOW-

Figure 5.10 Multiword DMA data transfer timing (mode 2)

5-150
t
M
t
I
t
E
Timing parameter
t
D
t t
G F
t t
G H
Min.
70
—
5
20
10
0
25
Max. Unit
— ns
50 ns
— ns
— ns
— ns
— ns
— ns
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