LSI Logic Confidential
AC Timing
18-41
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
18.2.13 SD Interface Timing
The SD interface is used to read or write the data from or to the DVD
drives. The SD synchronous read and write timing diagram is shown in
t4
ATAPI_DIOW data hold
(min)
30
(RWHold *
C)
20
(RWHold *
C)
15
(RWHold *
C)
10
(RWHold *
C)
10
(RWHold *
C)
t5
ATAPI_DIOR data setup
(min)
50
35
20
20
20
t6
ATAPI_DIOR data hold
(min)
5
5
5
5
5
t6z
ATAPI_DIOR data 3-state
(max)
30
30
30
30
30
t9
ATAPI_DIOR/
ATAPI_DIOW to address
valid hold (min)
20
(RWHold *
C)
15
(RWHold *
C)
10
(RWHold *
C)
10
(RWHold *
C)
10
(RWHold *
C)
tRd
Read data valid to
ATAPI_IORDY active
(if ATAPI_IORDY initially
low after tA) (min)
0
0
0
0
0
tA
ATAPI_IORDY setup time
(min)
35
35
35
35
35
tB
ATAPI_IORDY pulse width
(max)
1250
1250
1250
1250
1250
Table 18.27 ATAPI PIO Read and Write Timing Parameters (Cont.)
Symbol
Timing Parameters
Mode0
ns
Mode1
ns
Mode2
ns
Mode3
ns
Mode4
ns