K6610170
Rev.2
Dec 22, 2004
- 132 -
Figure 8.3 Multi-word DMA Data Transfer Timing (Mode 2)
*3 Data Consists DD(15:0)
SYMBOL Description
MIN(ns)
MAX(ns)
t
0
Cycle
Time
120
t
D
DIOR- /DIOW- Pulse Width
70
t
E
DIOR- Data Access
50
t
F
DIOR- Data Hold
5
t
Gr
DIOR- Data Setup
20
t
Gw
DIOW- Data Setup
20
t
H
DIOW- Data Hold
10
t
I
DMACK to DIOR- / DIOW- Setup
0
t
J
DIOR- / DIOW- to DMACK Hold
5
t
K
DIOR- / DIOW- Negated Pulse Width
25
t
L
DIOR- / DIOW- to DMARQ Delay
35
t
M
CS(1:0) valid to DIOR-/DIOW-
25
t
N
CS(1:0) hold
10
t
Z
DMACK- to tristate
25
t
M
t
0
t
L
t
I
t
D
t
K
t
J
t
Gw
t
Gr
t
H
t
F
DMARQ
DMACK-
DIOR-/DIOW-
Write Data Valid *3
Read Data Valid *3
CS0-/CS1-
t
N
t
E
t
Z