FUJITSU C141-E090-02EN - Manual (Page 151)

C141-E090-01EN 5 - 86
5.6.2 Multiword data transfer
Figure 5.9 shows the multiword DMA data transfer timing between the device and the host
system.
tF tE
tH tG
tJ
tD
tI
tC
t0
Read data
DD0-DD15
Write data
DD0-DD15
DIOR-/DIOW-
DMACK-
DMARQ
tK
Symbol Timing parameter Min. Max. Unit
t0 Cycle time 120 — ns
tC Delay time from DMACK assertion to DMARQ negation — 35 ns
tD Pulse width of DIOR-/DIOW- 70 — ns
tE Data setup time for DIOR- — 30 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 5.9 Multiword DMA data transfer timing (mode 2)