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SH7708 Datasheet(PDF) 96 Page - Renesas Technology Corp |
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SH7708 Datasheet(HTML) 96 Page - Renesas Technology Corp |
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96 / 633 page  78 3.6.2 Data Array The data array is assigned to H'F3000000 to H'F3FFFFFF. To access a data array, the 32-bit address field (for read/write operations), and 32-bit data field (for write operations) must be specified. These are specified in the general register. The address section specifies information for selecting the entry to be accessed; the data section specifies the longword data to be written to the data array (figure 3.14 (2)). In the address section, specify the entry address for selecting the entry (bits 16–12), W for selecting the way (bits 9–8: 00 is way 0, 01 is way 1, 10 is way 2, 11 is way 3), and H'F3 to indicate data array access (bits 31–24). The IX bit in MMUCR indicates whether an EX-OR is taken of the entry address and ASID. Both reading and writing use the longword of the data array specified by the entry address and way number. The access size of the data array is fixed at longword. |
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