LSI Logic Confidential
18-38
Specifications
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
18.2.12 ATAPI AC Timing
18.2.12.1 ATAPI DMA Protocol
Figure 18.30 ATAPI DMA AC Timing
Table 18.26 ATAPI DMA Protocol Timing
Symbol
Parameters
Mode0
ns
Mode1
ns
Mode2
ns
Comment
t
0
Cycle time (min)
480
150
120
t
C
ATAPI_DMAACK to ATAPI_DMARQ delay
(max)
1
200
100
80
t
D
ATAPI_DIOR/ATAPI_DIOW 16-bit (min)
215
80
70
RWTime * C
2
t
E
ATAPI_DIOR data access (max)
250
150
60
t
F
ATAPI_DIOR data hold (min)
5
5
5
t
Gr
ATAPI_DIOR data setup (min)
100
30
20
t
Gw
ATAPI_DIOW data setup (min)
100
30
20
t
H
ATAPI_DIOW data hold (min)
20
15
10
RWHold * C
ATAPI_DMARQ (I)
ATAPI_DMAACK (O)
ATAPI_DIOW/DIOR (O)
ATAPI_DATA[15:0]
ATAPI_DATA[15:0]
Data0
Data1
Data0
Data1
(Read) (I/O)
(Read) (I/O)
T
0
T
C
T
K
T
L
T
I
T
E
T
Z
T
J
T
F
T
Gr
T
Gw
T
H
T
D
Содержание DMN-8600
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