LSI Logic Confidential
AC Timing
18-39
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
t
I
ATAPI_DMAACK to
ATAPI_DIOR/ATAPI_DIOW setup (min)
0
0
0
t
J
ATAPI_DIOR/ATAPI_DIOW to
ATAPI_DMAACK hold (min)
20
15
10
RWHold * C
t
Kr
ATAPI_DIOR negated pulse width (min)
50
50
25
RWWidth * C
t
Kw
ATAPI_DIOW negated pulse width (min)
215
50
25
RWWidth * C
t
Lr
ATAPI_DIOR to ATAPI_DMARQ delay
(max)
120
40
35
t
Lw
ATAPI_DIOW to ATAPI_DMARQ delay
(max)
40
40
35
t
Z
ATAPI_DMAACK to 3-state (max)
20
25
25
1. This timing only applies to a single DMA transfer.
2.
“C” is the system clock cycle time.
Table 18.26 ATAPI DMA Protocol Timing (Cont.)
Symbol
Parameters
Mode0
ns
Mode1
ns
Mode2
ns
Comment
Содержание DMN-8600
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