LSI Logic Confidential
18-40
Specifications
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
18.2.12.2 ATAPI PIO Read and Write Protocol
Figure 18.31 ATAPI PIO Read and Write Timing
Table 18.27 ATAPI PIO Read and Write Timing Parameters
Symbol
Timing Parameters
Mode0
ns
Mode1
ns
Mode2
ns
Mode3
ns
Mode4
ns
t0
Cycle time (min)
600
383
240
180
120
t1
Address valid to
ATAPI_DIOR/
ATAPI_DIOW setup (min)
70
(RWSetup
* C)
50
(RWSetup
* C)
30
(RWSetup
* C)
30
(RWSetup
* C)
25
(RWSetup
* C)
t2
ATAPI_DIOR/
ATAPI_DIOW (16-bit)
(min)
165
(RWTime
* C)
125
(RWTime
* C)
100
(RWTime *
C)
80
(RWTime
* C)
70
(RWTime *
C)
t2i
ATAPI_DIOR/
ATAPI_DIOW recovery
time (min)
-
(RWRcv *
C)
-
(RWRcv *
C)
-
(RWRcv *
C)
70
(RWRcv *
C)
25
(RWRcv *
C)
t3
ATAPI_DIOW data setup
(min)
60
45
30
30
20
T
6z
T
6
T
0
ATAPI_DIOR/DIOW (O)
ATAPI_ADDR[4:0] (O)
ATAPI_DATA[15:0]
ATAPI_DATA[15:0]
ATAPI_IORDY (I)
Address Valid
(Write) (I/O)
(Read) (I/O)
T
2
T
1
T
9
T
2i
T
A
T
RD
T
5
T
4
T
3
T
B
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