On Tue, 18 Jul 2017 13:28:40 -0700 (PDT) mehdi soheili <[email protected]> wrote:
> hi everyone > i have some problem to use multilayer pcb for my design. > i found ddr1 package is not bga and allwinner a13 package is lqfp. > so we could route trace in 2-layer pcb easily if core support ddr1 memory > chip. > anybody could tell me is it possible or not? > tnx alot. > > DDR vs DDR2 <http://www.diffen.com/difference/DDR_vs_DDR2> Well, you can check the A13 datasheet and it says "Support DDR2 SDRAM and DDR3 SDRAM up to 533MHz". So DDR1 is not in the list. But you can send your query to Allwinner and maybe they can help. Even DDR2 is currently not supported in the mainline U-Boot on A13. Simply because we never had any such hardware to actually test the code. Also my understanding is that DDR3 is currently the cheapest memory that you can get anyway, so it is economically unreasonable to design boards with anything older. -- Best regards, Siarhei Siamashka -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
