最近在使用I.MX6Q的EIM接口和FPGA通信,在配置寄存器中有些疑问,请问IOMUXC寄存器中有一位SION:(这是mux寄存器中的,什么作用?)
例如:IOMUXC_SW_MUX_CTL_PAD_EIM_DATA16寄存器中第4位SION,寄存器描述如下:
Software Input On Field.
Force the selected mux mode input path no matter of MUX_MODE functionality.
1 ENABLED— Force input path of pad EIM_D16.
0 DISABLED— Input Path is determined by functionality of the selected mux mode (regular).
是指使能EIM_D16的输入吗?如果该管脚作为输出怎么办?请大家指教,谢谢各位!
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