Single Word Dma Data Transfer; Single Word Dma Data Transfer Timing - Fujitsu MPB3021AT Product Manual

5.6.2

Single word DMA data transfer

Figure 5.10 show the single word DMA data transfer timing between the device and the host
system.
DMARQ
DMACK-
DIOR-/DIOW-
Write data
DD0-DD15
Read data
DD0-DD15
Symbol
t0 Cycle time
tC Delay time from DMACK assertion to DMARQ negation
tD Pulse width of DIOR-/DIOW-
tE Data setup time for DIOR-
tF Data hold time for DIOR-
tG Data setup time for DIOW-
tH Data hold time for DIOW-
tI DMACK setup time for DIOR-/DIOW-
tJ DMACK hold time for DIOR-/DIOW-
Figure 5.10 Single word DMA data transfer timing
5 - 76
tC
tI
tD
tG
tE
Timing parameter
C141-E045-02EN
t0
tJ
tH
tF
Min.
240
—
120
—
5
35
20
0
0
Max. Unit
— ns
80 ns
— ns
60 ns
— ns
— ns
— ns
— ns
— ns