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Hello everyone, today we will learn about the introduction of Type-C interface signals in Apple A2159 circuit

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This is an A2159 mainboard

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The Type-C connector is here

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The cable of the Type-C interface is inserted here, and two Type-C interfaces can be connected

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The chip near the interface is the Thunderbolt chip

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The two Type-C interfaces share a flat cable

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There are two Type-C controllers,

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one is on the front of the mainboard and one is on the back

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This CD3217 is the Type-C controller

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The position number of this interface is called J3300 in the circuit diagram

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Ok, let's take a look at the signal definition of this interface

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This connector manages two Type-C ports, so we split it in half

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After being divided into two halves, each interface has A side and B side,

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let's look at this part first

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The bottom one is the power supply line, VBUS

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The external name is PP20V_USBC_XA_VBUS, which is a power supply line

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If we plug in the adapter, the voltage from the adapter will be fed into the mainboard from this line

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When we connect peripherals from the Type-C interface,

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the power supply required by the external devices is also output from this line

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This is the CC bus for communication between the adapter and the mainboard

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Here is a pair of transmitting and a pair of receiving signals,

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which is equivalent to the USB3.0 bus

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The SBU bus is a multifunctional bus whose function in the circuit is defined by the program

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This pair is the USB2.0 bus

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This is the pin definition for one side of the interface

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A Type-C interface has two sides,

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and the pins on the other side are defined on the B side

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XB refers to the B side, and XA refers to the A side

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Side B also has power supply, CC bus, and a pair of transmitting and receiving signals

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It also has SBU bus, and USB2.0 bus

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These are the A-side and B-side pins of a Type-C interface

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On the other side, this is another pin of the Type-C interface

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One connector manages two Type-C interfaces

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This side is also divided into B side and A side, and the signals on both sides are here

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This is the pin definition of the Type-C interface

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When we plug in the adapter, no matter which Type-C interface is plugged in,

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it can supply power to the mainboard