Multiword Data Transfer; Multiword Dma Data Transfer Timing (Mode 2) - Fujitsu MPC3096AT - Desktop 9.7 GB Hard Drive Product Manual

5.6.3

Multiword data transfer

Figure 5.11 shows the multiword 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-
tK Continuous time of high level for DIOR-/DIOW-
Figure 5.11 Multiword DMA data transfer timing (mode 2)
tC
tI
tD
tG
tE
Timing parameter
C141-E055-01EN
t0
tJ
tK
tH
tF
Min. Max.
120
—
70
—
5
20
10
0
5
25
Unit
— ns
35 ns
— ns
30 ns
— ns
— ns
— ns
— ns
— ns
— ns
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