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TYPE C circuit without PD chip

A circuit and chip technology, applied in the direction of logic circuit, logic circuit coupling/interface using field effect transistor, logic circuit connection/interface arrangement, etc.

Pending Publication Date: 2021-09-14
深圳市世纪创新显示电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a TYPE C circuit without a PD chip to solve the problem of CC communication

Method used

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  • TYPE C circuit without PD chip
  • TYPE C circuit without PD chip
  • TYPE C circuit without PD chip

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Embodiment Construction

[0031] Hereinafter, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

[0033] A TYPE C circuit without PD chip of the present invention, such as Figure 1-7 As shown, a TYPE C circuit without PD chip includes: TYPE C interface; external...

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PUM

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Abstract

The invention relates to a TYPE C circuit without a PD chip. The TYPE C circuit comprises: a TYPE C interface; an external charging circuit, wherein the voltage output end of the external charging circuit is connected with the VBUS end of the TYPE C interface, and the external charging circuit is used for supplying power; a TYPE CVBUS detection circuit, wherein the input end of the TYPE CVBUS detection circuit is connected with the VBUS end of the TYPE C interface, and the TYPE CVBUS detection circuit is used for VBUS detection and control; an SUB / AUX switching circuit, wherein the input end of the SUB / AUX switching circuit is connected with a SUB pin of the TYPE C interface, and the SUB / AUX switching circuit is used for converting a DP signal into an AUX signal when the TYPEC is positively and negatively plugged; a CC false discharge circuit, wherein the input end of the CC false discharge circuit is connected with a CC pin of the TYPE C interface, and the CC false discharge circuit is used for discharge protection; a CC detection circuit, wherein the input end of the CC detection circuit is connected with the output end of the CC false discharge circuit, and the CC detection circuit is used for detecting the CC pin signal state of the TYPE C; and an SCALER chip, wherein the DP end of the SCALER chip is connected with the TX / RX port of the TYPE C interface, the output end of the CC detection circuit is connected with the ADC end of the SCALER chip, the output end of the SUB / AUX switching circuit is connected with the input end of the SCALER chip, and the SUB / AUX switching circuit is used for signal transmission control. The circuit is simple in periphery and low in cost, and the CC communication problem is solved.

Description

technical field [0001] The invention relates to the technical field of TYPE-C, in particular to a TYPE-C circuit without a PD chip. Background technique [0002] At present, with the rise of TYPE C products in recent years, more and more monitors have also applied TYPE-C interface technology. Then use TYPE C with at least one PD chip, so as to realize the CC communication protocol of TYPE C port, and then the cost of PD chip is relatively high, which is more than 10% higher for low-end display boards, which is difficult for customers to accept. The cost of existing TYPE C circuits with PD chips is high. [0003] To this end, a TYPE C circuit without a PD chip is provided to solve the problem of CC communication. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to provide a TYPE C circuit without a PD chip to solve the problem of solving the CC communication problem. [0005] In order to achieve the above purpose, the technical solution adopted b...

Claims

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Application Information

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IPC IPC(8): H03K19/0185H03K19/003
CPCH03K19/018507H03K19/0033
Inventor 徐世立徐永亮黎旭
Owner 深圳市世纪创新显示电子有限公司