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This lesson is about the description of the camera circuit in the circuit diagram

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The following figure is a circuit description of a camera connector

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Then the circuit description of the camera connector is actually a description

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of all the working conditions of the camera circuit

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Because all camera power supply, bus and reset, and clock all lead to the camera connector

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J2001 is the camera connector, we regard it as a camera

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Take a look at this picture

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There are two cameras here, so there are two camera circuits

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First look at its power supply

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The second pin of the connector is a 1.1 volt power supply

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The direction of power supply is from left to right

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Because here is the J2001 camera on the right

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Including these power supply directions are all from left to right

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Then the power supply on the right is from right to left,

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which is provided by other chips to the camera connector

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The power supply of this group of cameras has 1.1 volts, 1.8 volts,

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2.8 volts and 1.8 volts of power supply, and this 2.8 volts of auto focus power supply

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There are five power supplies in total

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The clock of the camera is at this position, CLOCK2

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MCAM is the main camera

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The reset signal of the camera is on the ninth pin

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The I2C bus is on the fourth and sixth pins of the connector

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This is the CSI bus, which mainly transmits the image signal collected by the camera to the CPU

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These are the conditions for this group of photography

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Another set of cameras has the same circuit

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First is the power supply

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It has 1.8V, 2.8V, 1.1V, and 2.8V power supplies

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It also has clock signal, reset signal, I2C bus signal, it also has CSI bus

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The CSI bus is the same as the previous camera, it is for the CPU

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This is the description of the working conditions of the camera circuit in the circuit diagram

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Let's sum it up

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The camera circuit has power supply, there are 4-way power supply and 5-way power supply

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It has clock signal, reset signal, I2C bus control signal, and detection signal

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CSI is the image transfer bus

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This is the working condition of the camera circuit

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That's all for this lesson