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可以直接接1GB的DDR3,您可以看一下下面帖子的讨论。
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/318890/am335x-1gb-ddr3-support
如圖AM335x共有19 位址線,那最大就是 2^19 =512M
2^19是512K,这种计算方法是针对nor flash这种异步memory,它们是地址线性寻址的。DDR3的memory size不是这样计算的。