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关于GPMC Pin Multiplexing Options



在Technical Reference Manual里面的 table 7-5 ,表里面明明有non multiplexed 模式,请问Multiplexed address data 16 bit device一般应用在什么场合,不是有GPMC_A[0到GPMC_A[27]吗,为什么还需要在数据线上复用呢?