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shiguanghu
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Update IOMUX_Controller_(IOMUXC)_O多路复用控制器.txt
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pinctrl/IOMUX_Controller_(IOMUXC)_O多路复用控制器.txt

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@@ -40,7 +40,7 @@ ALT6和ALT7多路复用模式允许系统的任何信号(比如fuse, pad input)
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具体参照原理图, HUD项目中, 原理图中UART4_RX_DATA是接到KEY_ROW0这个pad上了, 所以项目中, KEY_ROW0这个pad作为UART4_RX_DATA输入脚,
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故要设置IOMUXC_UART4_UART_RX_DATA_SELECT_INPUT[DAISY]=3
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So, 只有_mux_mode = 0时,_select_input_ofs和_select_input才有效,其余时候_select_input_ofs和_select_input 都为0 ?
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如何理解IOMUX多路复用器呢?

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