How much RAM can be supported by OMAP3530/DM3730 ?


I googled "dm3730", clicked the third link (http://www.ti.com/li...link/dm3730.pdf) and on the first page:


"SDRAM Controller (SDRC)


– 16,32-bit Memory Controller With 1G-Byte Total Address Space"


(emphasis mine)


EDIT: and the same works for omap3530, but the SDRC description is on the second page of the pdf (same 1Gbyte).


E2: I will add that that is of course not the whole story. That is the maximum about of SDRAM (DDR* is also a form of SDRAM) supported by the controller. There might be pin mapping issues if we wanted to use the full 1GiB on the current board (and maybe RAM package availability issues... or issues with having both NAND and that huge SDRAM on the same PoP ...). I dont know enough of these things to say anything more specific on this. Also - if you want maximum of any type of RAM, then you would need to count also the general purpose memory interface which with 8 chip selects could (theoretically, if such things existed...) access upto another GiB of SRAM, but since SRAM is usually sold in the size of kilobytes and not megabytes, I dont think you want to count that - the GPMC is propably usually used for non-memory-only stuff like ethernet controllers or the like... (E3: There indeed are chips that work like SRAM but are actually DRAM called PSRAM (pseudo-) but they would be 88€ for 1GiB and take a lot of space and be propably slower than the SDRAM interface)
 
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