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关于EMIFA的几个疑惑



你好,请教关于OMAPL138的EMIFA几个问题;

#1. emifa有23位的地址线,在利用它连接FPGA时,我想知道需要几根?是由什么决定的?

#2. emifa连接nandflash时,我看ALE和CLE都是连接到A2A1上的,为什么不接在A1A0呢?有什么讲究吗?

谢谢!