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Section 12 Bus State Controller (BSC)
Rev. 4.00 Sep. 14, 2005 Page 389 of 982
REJ09B0023-0400
Tables 12.18 to 12.22 lists the minimum number of idle cycles to be inserted for the normal space
interface and the SDRAM interface. The CSnBCR Idle Setting column in the tables describes the
number of idle cycles to be set for IWW, IWRWD, IWRWS, IWRRD, and IWRRS.
Table 12.18 Minimum Number of Idle Cycles between CPU Access Cycles for the Normal
Space Interface
BSC Register Setting
When Access Size is Less than
Bus Width
When Access Size Exceeds Bus Width
CSnWCR.
WM Setting
CSnBCR
Idle Setting
Read to
Read
Write to
Write
Read to
Write
Write
to Read
Contin-
uous
Read
*
1
Contin-
uous
Write
*
1
Read to
Read
*
2
Write to
Write
*
2
Read to
Write
*
2
Write to
Read
*
2
1 0 1/1/1/2
1/1/2/3
3/3/4/5 0/0/0/0 0/0/0/0 0/0/0/0 1/1/1/2 0/0/0/1 3/3/4/5 0/0/0/0
0 0 1/1/1/2
1/1/2/3
3/3/4/5 1/1/1/1 1/1/1/1 1/1/1/1 1/1/1/2 1/1/1/1 3/3/4/5 1/1/1/1
1 1 1/1/1/2
1/1/2/3
3/3/4/5 1/1/1/1 1/1/1/1 1/1/1/1 1/1/1/2 1/1/1/1 3/3/4/5 1/1/1/1
0 1 1/1/1/2
1/1/2/3
3/3/4/5 1/1/1/1 1/1/1/1 1/1/1/1 1/1/1/2 1/1/1/1 3/3/4/5 1/1/1/1
1 2 2/2/2/2
2/2/2/3
3/3/4/5 2/2/2/2 2/2/2/2 2/2/2/2 2/2/2/2 2/2/2/2 3/3/4/5 2/2/2/2
0 2 2/2/2/2
2/2/2/3
3/3/4/5 2/2/2/2 2/2/2/2 2/2/2/2 2/2/2/2 2/2/2/2 3/3/4/5 2/2/2/2
1 4 4/4/4/4
4/4/4/4
4/4/4/5 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/5 4/4/4/4
0 4 4/4/4/4
4/4/4/4
4/4/4/5 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/4 4/4/4/5 4/4/4/4
1 6 6/6/6/6
6/6/6/6
6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6
0 6 6/6/6/6
6/6/6/6
6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6 6/6/6/6
0, 1
n (n>=8)
n/n/n/n
n/n/n/n n/n/n/n n/n/n/n n/n/n/n n/n/n/n n/n/n/n n/n/n/n n/n/n/n n/n/n/n
Notes:
The minimum number of idle cycles is described sequentially for I
φ
: B
φ
(4:1/3:1/2:1/1:1).
1. Minimum number of idle cycles between the upper and lower 16-bit access cycles in the
32-bit access cycle when the bus width is 16 bits, and the minimum number of idle
cycles between continuous access cycles during 16-byte transfer
2. Minimum number of idle cycles for other than the above cases
Содержание HD6417641
Страница 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Страница 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Страница 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Страница 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Страница 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Страница 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
Страница 1035: ......
Страница 1036: ...SH7641 Hardware Manual...