SH7720 Datasheet, PDF (172/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 3 DSP Operating Unit
3.4.4 Memory Data Formats
Memory data formats that can be used in the DSP instructions are classified into byte and
longword. An address error will occur if word data starting from an address other than 2n or
longword data starting from an address other than 4n is accessed by MOVS.L, LDS.L, or STS.L
instruction. In such cases, the data accessed cannot be guaranteed
An address error will not occur if word data starting from an address other than 2n is accessed by
the MOVX.W or MOVY.W instruction. When using the MOVX.W or MOVY.W instruction, an
address must be specified on the boundary 2n. If an address is specified other than 2n, the data
accessed cannot be guaranteed.
Rev. 3.00 Jan. 18, 2008 Page 110 of 1458
REJ09B0033-0300