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6678 TIMI1引脚连接问题



求教:6678中TIMI【1:0】引脚作用是什么?看开发板原理图上这两个引脚都是下拉的,如果没用的TIMI1引脚而将TIMI1引脚悬空了,对6678各个接口模块或内部有什么影响么?