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10.4.4 Single Word DMA Read Timing
ATA-2 SPECIFICATION
Transfer mode MODE 0 MODE 1 MODE 2
Symbol Meaning Min. Max. Min. Max. Min. Max.
t0 Cycle time 960 480 240
t
C
DMACK to DMARQ delay 200 100 80
t
D
-DIOR 16-bit 480 240 120
t
E
-DIOR data access 250 150 60
t
F
-DIOR data hold 5 5 5
t
I
DMACK to -DIOR setup 0 0 0
t
J
-DIOR to DMACK hold 0 0 0
t
S
-DIOR setup t
D
-t
E
t
D
-t
E
t
D
-t
E
t
C
-DMACK
t
S
t
F
t
J
t
I
DMARQ
-DIOR
DD15∼DD0
t
O
t
D
t
E