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MCBSP接多个AIC23的配置问题

AIC23在使用两线接口进行配置时,需要子地址,看了一下资料,貌似是CS引脚低的话,地址是0x0a,CS高的话,地址是0x0b,如果有三个AIC23接到5509A上,在初始化AIC23时,怎么配置这几个AIC23?谢谢