Translation - Japanese: DMAを使用してPSoC 3の256バイトの「内部空間」（IDATA）にデータを転送する – KBA99263 Community Translated (JA)
Can I transfer data to the 256 Bytes "inner space" (IDATA) of the PSoC3 using DMA?
No, it is not possible to do that.
In PSoC 3, the address of 256 bytes of "inner space" (IDATA) is not included in the PSoC 3 Memory Map. DMA can only recognize the external SRAM whose address is mapped from 0x000000 to 0x001FFF.