SH7708 Datasheet, PDF (96/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

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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