Section 7 Bus State Controller (BSC)
Rev. 2.00 Mar 09, 2006 page 340 of 906
REJ09B0292-0200
accesses are performed; when connecting to a 16-bit width ROM, a maximum of 2 consecutive
accesses are performed. Figure 7.53 shows the relationship between data width and access size.
For cache filling and DMAC 16-byte transfers, longword accesses are repeated 4 times.
When one or more wait states are set for a burst ROM access, the
WAIT
pin is sampled. When the
burst ROM is set and 0 specified for waits, there are 2 access cycles from the second time on.
Figure 7.55 shows the timing.
T1
Tw
T2
Tw
T2
Tw
T2
Tw
T2
8-bit bus-width longword access
T1
Tw
T2
Tw
T2
8-bit bus-width word access
T1
Tw
T2
8-bit bus-width byte access
T1
Tw
T2
Tw
T2
16-bit bus-width longword access
T1
Tw
T2
16-bit bus-width word access
T1
Tw
T2
16-bit bus-width byte access
T1
Tw
T2
32-bit bus-width longword access
T1
Tw
T2
32-bit bus-width word access
T1
Tw
T2
32-bit bus-width byte access
Figure 7.53 Data Width and Burst ROM Access (1 Wait State)
Содержание SH7616
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Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...