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Analysis on the function allocation of TYPE-C pins
- 2020-11-28-

Analysis on the function allocation of TYPE-C pins

Pins are also called pins, which are the wiring between the internal circuit of the integrated circuit and the external circuit.TYPE-CIt belongs to an electronic product, it has a total of 24 pins, and each pin plays an important role. The electrical connector has two types of USB interfaces, female and male. Both of them have 24 pins, but the specific definitions are different. In order to let everyone know the pins of TYPE-C more clearly, we will talk about the function assignment of pins from the perspective of female and male.


The figure above is the three views of the TYPE-C female header and the definition of each pin. The female header is specified on the backplane through the pins, and its structure meets the industry standard requirements of the connector. Among them, A2, A3, A10, All, B2, B3, B10, B11 are the main signal ports (high-speed signal ports), Al, A12, B1, B12 are ground terminals, and A6, A7, B6, B7 are USB2.0 signal ports (Low-speed signal port), A4, B4, A9, B9 are power supply ports, A5, A8, B5, and B8 are configuration ports.


The figure above is the three views of TYPE-C male header and the definition part of each pin. The definition and function of the pin part correspond to the female header part. The insulating parts such as the front rubber core of the male end of the connector, the PIN needle rubber plug, the shrapnel rubber plug, and the pressure-resistant rubber sleeve of the female end are all made of LCP. The material of the two grounding plates of the male end is SUS3011/2H, the material of the male end is SUS3011/2H. The PIN terminal is C7025, the snap-in shrapnel is SUS301-H, the front iron box of the male head, the rear iron case of the female head, and the outer iron case are all made of zinc alloy.

In summary, TYPE-C has two rows of upper and lower signal terminals. The two rows of signal terminals are symmetrical. Each signal terminal has two pairs of high-speed signal differential pairs, a pair of low-speed signal ports, two GNDPINs, and two power PINs. , A function expansion terminal and a state selection terminal. Connector manufacturers can choose which pins to use according to customer requirements. For example, TYPE-C used in 4K video system equipment does not need to have a power supply function, so there is no need to use power-related pins.