SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
The DDR controller automatically maps SoC addresses to the SDRAM memory in a contiguous block. Addressing starts at address 0x0 and ends at the highest available address according to the size and number of SDRAM memories present. This mapping depends on the programmed values in the DDR controller registers and is based on the actual size of the available SDRAM memories. The size is configured via the DDRSS_CTL_286[2-0] MEMDATA_RATIO_0 and DDRSS_CTL_287[10-8] MEMDATA_RATIO_1 fields and that must be initialized at power-up.