Is there an manual/data sheet error of the size of DDR that BF54x can besupported?
From BF54x HRM,
* Supports industry standard double data rate (DDR SDRAM) from 64 Mbit to512 Mbit device sizes with a configuration of x4, x8, or x16.* Provides 16-bit wide data interface to DDR SDRAM.* Supports up to 256 MB of DDR SDRAM with one external bank.
The manual said BF54x can support up to 256MB per external bank, however,there is another paragraph saying that it can support up to 512Mb device whichis only 64 MB. This description is confusing. Can we connect a 1 Gbit orlarger DDR? If not, how can we get 256MB per external bank.
The data sheet is pretty clear on that: 128MB. Just look at the Figure 3 Internal/External Memory Map
The HRM is still under review and the numbers (512MB) are wrong. It is 128M for the ADSP-BF52x Blackfin processor family.