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Interface management circuit, graphic signal generator and usb TYPE-C conversion cable

An interface management and interface technology, applied in the field of USB transmission, can solve the problems of inability to perform two-way data transmission, high cost and high price of USBTYPE-C interface equipment, and achieve the effects of reducing product cost, easy implementation, and simple circuit structure

Active Publication Date: 2021-02-09
WUHAN JINGCE ELECTRONICS GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing integrated PD control chip cannot meet all functional requirements on the one hand, for example, it only supports one-way fixed receiving or sending signals, and cannot perform two-way data transmission, and for example, it does not support some newly upgraded communication protocols. On the one hand, the existing integrated PD control chip is expensive, resulting in high cost of equipment with USB TYPE-C interface

Method used

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  • Interface management circuit, graphic signal generator and usb TYPE-C conversion cable
  • Interface management circuit, graphic signal generator and usb TYPE-C conversion cable
  • Interface management circuit, graphic signal generator and usb TYPE-C conversion cable

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] The USB TYPE-C interface is a standard USB transmission interface. On the basis of the traditional USB interface, it adds the function of reversible plugging and reduces the size of the interface. USB TYPE-C interface pins such as figure 1 shown. From the outside to the inside, the USBTYPE-C interface pin definition is basically symmetrical, so it can support forward and reverse inserti...

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Abstract

The invention discloses an interface management circuit, a graphic signal generator and a USB TYPE‑C transfer line. The interface management circuit is applied to the USB TYPE‑C interface, including: a control module, a signal acquisition module, a first channel selection chip and a second channel selection chip; one end of the first channel selection chip and the CC1 pin of the USB TYPE‑C interface connection, one end of the second channel selection chip is connected to the CC2 pin of the USB TYPE-C interface, the signal acquisition module collects the first voltage of the CC1 pin of the USB TYPE-C interface and the second voltage of the CC2 pin, and the control module according to The first voltage and the second voltage identify whether the insertion direction of the USB TYPE-C interface is positive connection or reverse connection. The present invention does not need to use a dedicated PD control chip, and can realize the USB TYPE-C interface management function in the host mode or the slave mode directly by switching the circuit.

Description

technical field [0001] The invention belongs to the technical field of USB transmission, and more specifically relates to an interface management circuit, a graphic signal generator and a USB TYPE-C conversion cable. Background technique [0002] In recent years, the USB TYPE-C interface has added a reversible plug-in function and reduced the interface size on the basis of the original USB interface's versatility. Once launched, it has won unanimous praise from manufacturers and users. [0003] The USB TYPE-C interface can support 3.3-20V voltage negotiation and 0-5A current negotiation under the latest PD3.0 specification, and PD 2.0 and PD3.0 also support positive and negative insertion identification and information exchange based on BMC code. PD has many functions. Some chip manufacturers have developed dedicated integrated PD control chips. At present, all devices with USB TYPE-C interfaces are basically integrated PD control chips developed by chip manufacturers to rea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38G06F13/40G06F13/42H01R31/06
CPCG06F13/385G06F13/4022G06F13/4282G06F2213/0042H01R31/065
Inventor 张博佳
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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