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iPhone common buses

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In this video, we mainly explain the buses in the iPhone mainboard

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Bus overview

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Bus refers to the line used to exchange data

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between components in electronic products

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This line provides data transfer and control logic for each component

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For example, Xiaoming takes a bullet train from Beijing to Shanghai

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Xiaoming can be understood as data,

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and the line that the bullet train takes can be understood as a bus

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The name of the train line is Beijing-Shanghai high-speed railway

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Then in the mainboard,

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the lines that transmit data from chips will also have names

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For example, the data bus from CPU to display is called MIPI bus,

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which is mainly used to transmit data between CPU and display

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There will be many kinds of buses in iPhones,

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and the data transmitted by these buses are different and have different names

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According to the bus block diagram of iPhone,

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we can see that there are many lines between the CPU and each chip,

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the lines are marked with names,

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and the data transmitted by different lines are also different

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Let's take a look at the meaning, function, identification

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and failure phenomenon of each bus