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TMS320C6678: memory range

Part Number: TMS320C6678

Hi,

According to section 2.3 Memory Map Summary:DDR3 EMIF data logic address 0x80000000~0xFFFFFFFF 2GB.

The customer used four DDR3(MT14J128M16) on tms320c6678, total size 1GB. He could access from both 0x80000000~0xbFFFFFFF or 0xC0000000~0xFFFFFFFF. It seems impossible. What's the default start address? Is it set by GEL_MapAddStr( 0x80000000, 0, 0x80000000, "R|W|AS4", 0 )? It is impossible that he could access from 0xC0000000 to 0xFFFFFFFF if he used default setting.