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4-88 C156-E227-01EN
Table 4.119 Multiword DMA data transfer timing parameters
Symbol Timing parameter min
(Units: ns)
max
(Units: ns)
Condition
t0 Cycle time 120 - Mode 2
tD DIOR-/DIOW- pulse width 70 -
tE DIOR- data access time - 50
tF DIOR- data hold time 5 -
tG DIOR-/DIOW- data setup time 20 -
tH DIOW- data hold time 10 -
tI DMACK- to DIOR/DIOW- setup time 0 -
tJ DIOR-/DIOW to DMACK- hold time 5 -
tK DIOR-/DIOW negated pulse width 25 -
tL DIOR-/DIOW to DMARQ- delay time - 35
tM CS (1:0) to DIOR /DIOW valid time 25 -
tN CS (1:0) hold time 10 -
tZ DMACK- to tristate time - 25