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AM5728的GPMC片选问题

Other Parts Discussed in Thread: AM5728

您好,请教一下AM5728的GPMC接口,我们需要连接8个NAND flash,采用数据线和控制线共用,片选区分的方式,GPMC片选信号有八个,但是有两个和GPMC_ALE,GPMC_ben0信号引脚是冲突的,我想问下,片选信号能否用其他GPIO引脚实现?还是只能用6个片选?