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400X CompactFlash Card
Transcend Information Inc.
V1.0
30
True IDE Multiword DMA Mode Read/Write Timing Specification
Item
Mode 0
(ns)
Mode 1
(ns)
Mode 2
(ns)
Mode 3
(ns)
Mode 4
(ns)
Note
t
O
Cycle time (min) 480 150 120 100 80 1
t
D
-HIOE / -HIOW asserted width (min) 215 80 70 65 55 1
t
E
-HIOE data access (max) 150 60 50 50 45
t
F
-HIOE data hold (min) 5 5 5 5 5
t
G
-HIOE/-HIOW data setup (min) 100 30 20 15 10
t
H
-HIOW data hold (min) 20 15 10 5 5
t
I
-HREG to –HIOE/-HIOW setup (min) 0 0 0 0 0
t
J
-HIOE / -HIOW to -HREG hold (min) 20 5 5 5 5
t
KR
-HIOE negated width (min) 50 50 25 25 20 1
t
KW
-HIOW negated width (min) 215 50 25 25 20 1
t
LR
-HIOE to DMARQ delay (max) 120 40 35 35 35
t
LW
-HIOW to DMARQ delay (max) 40 40 35 35 35
t
M
CEx valid to –HIOE / -HIOW 50 30 25 10 5
t
N
CEx hold 15 10 10 10 10