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iPhone connection circuit repairing

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This video mainly explains the commonly used terms of connection circuit

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After we learn these terms, it can help us better understand the working principle of the circuit,

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and also help us find the schematic signal faster

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In the schematic diagram, different models use different logos to represent the USB management chip

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iPhone 6 to iPhone 7P models use TRISTAR to represent USB management chip

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iPhone 8 to iPhone 11Pro Max models use Hydra to represent USB management chip

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The iPhone 12 series uses KRAKEN to stand for USB management chip

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The following terms are common terms for each model

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DETECT stands for detection, generally refers to USB data cable insertion detection

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ACC stands for Accessory Power

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USB stands for Universal Serial Bus, used to transfer data

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BRICK_ID represents the data line ID identification signal

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UART refers to the universal asynchronous transceiver bus,

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which is also used to transmit data

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DP1 and DP2 represents the data transmission bus

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Let's recognize the common terms in the drawings

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This is the USB chip page of the iPhone 7P Qualcomm schematic

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TRISTAR stands for USB management chip,

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indicating that this page is dedicated to introducing the USB chip

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In the iPhone 11 Pro Max model, the logo HYDRA represents the USB management chip

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In the iPhone 12 Pro Max model, KRAKEN stands for USB management chip

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Let's look at the common terms

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In the USB block diagram, DETECT represents the data line insertion detection signal

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ACC stands for Accessory Power

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DP1 and DP2 represent the USB transmission data bus

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BRICK_ID represents the ID identification signal of the data line

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In the iPhone 12 Pro Max model, ACC stands for Accessory Power Supply

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DP1 and DP2 represent the USB data transfer bus

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DETECT represents the data line insertion detection signal

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UART stands for Asynchronous Transceiver Bus

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USB refers to the data transfer bus

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We will find that in each USB circuit block diagram,

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the common terms have the same meanings

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That's all for this video