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*Mux can connect multiple connectors at the same peripheral, this improper use can damage the processor. Make sure to disable old connector configuration before use new one.
*Some peripherals can are only be used placing available if you place or replacing replace some resistances. View schematics for more information.<br>*Some connectors can be shared with multiple share multiples peripherals. If you don't use them you You should disable themunused peripherals to avoid interferences. For example: you need to disable OMAP if you want to control wifi WIFI module with other IC via J990 disable OMAP or if you want use UART2 at j990 disable Bluetooth to use UART2 via J990.<br>
=== Configure mux<br> ===
*Editing and compile kernel sources. [[How to set up UART2 in J990#Third_way|Example]].
[http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=spruf98v&fileType=pdf More information] about mux.