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Section 12 Bus State Controller (BSC)
Rev. 4.00 Sep. 14, 2005 Page 309 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W Description
2
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
1
0
WTRC1
*
WTRC0
0
0
R/W
R/W
Number of Idle Cycles from REF Command/Self-
Refresh Release to ACTV/REF/MRS Command
Specify the number of minimum idle cycles during the
periods shown below.
•
From issuing of the REF command to issuing of the
ACTV/REF/MRS command
•
From releasing self-refresh to issuing of the
ACTV/REF/MRS command
The setting for areas 2 and 3 is common.
00: 2 cycles (Initial value)
01: 3 cycles
10: 5 cycles
11: 8 cycles
Note:
*
If both areas 2 and 3 are specified as SDRAM, WTRP[1:0], WTRCD[1:0], TRWL[1:0],
and WTRC[1:0] bit settings are common. If only one area is connected to the SDRAM,
specify area 3. In this case, specify area 2 as normal space or byte-selection SRAM.
Burst MPX-IO:
•
CS6BWCR
Bit Bit
Name
Initial
Value R/W Description
31 to 22
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
21
20
MPXAW1
MPXAW0
0
0
R/W
R/W
Number of Address Cycle Waits
Specify the number of waits to be inserted in the
address cycle.
00: No cycle
01: 1 cycle
10: 2 cycles
11: 3 cycles
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...
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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...
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Страница 1036: ...SH7641 Hardware Manual...