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SH7721 Datasheet(PDF) 249 Page - Renesas Technology Corp |
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SH7721 Datasheet(HTML) 249 Page - Renesas Technology Corp |
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249 / 1524 page  Section 4 Memory Management Unit (MMU) Rev. 3.00 Jan. 18, 2008 Page 187 of 1458 REJ09B0033-0300 3. Do not use the same physical addresses for address translation information of different page sizes. The above restrictions apply only when performing accesses using the cache. Note: When multiple items of address translation information use the same physical memory to provide for future SuperH RISC engine family expansion, ensure that the VPN bits 20 to 10 are the same. • When using a 4-kbyte page Virtual address 31 VPN 0 12 13 11 10 Offset Physical address 28 PPN 0 Offset Virtual address 12 to 4 Physical address 28 to 10 Cache • When using a 1-kbyte page Virtual address 31 VPN 0 10 11 12 13 Offset Physical address 28 PPN 0 10 11 12 13 Offset Virtual address 12 to 4 Physical address 28 to 10 Cache 12 13 11 10 Figure 4.12 Synonym Problem (32-kbyte Cache) |
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