USB Type-C interface circuit and control device thereof

An interface circuit and interface controller technology, applied in the USB field, can solve the problem of high power consumption
CN105867593AActive Publication Date: 2016-08-17HYNETEK SEMICON CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
HYNETEK SEMICON CO LTD
Publication Date
2016-08-17

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Abstract

The invention discloses a USB Type-C interface circuit and a control device thereof. The circuit comprises a power circuit, a power controller and a microprocessor; the power circuit is used for outputting the first voltage; the power controller is used for being connected with the power circuit and outputting a control signal to control the power circuit to output the first voltage; the microprocessor is used for being connected with a first power supply pin of a USB Type-C interface and the power controller separately, receiving the second voltage input by the first power supply pin of the USB Type-C interface when the USB Type-C interface is not connected with equipment, outputting a low level signal through a first enabling end to enable USB detection equipment to be in a standby state and outputting a low level signal through a second enabling end to enable the power controller to be in a standby state. Accordingly, by switching off the USB detection equipment and the power controller on the standby condition, the USB detection equipment and the power controller do not need to continuously work in 24 hours, and therefore the standby power consumption of the complete circuit is reduced.
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Description

technical field

[0001] The invention relates to the technical field of USB, in particular to a USB Type-C interface circuit and a control device thereof. Background technique

[0002] The USB specification organization announced a new type of USB interface, the USB Type-C interface. Compared with the old-fashioned USB Type-A and USB Type-B interfaces, this new type of USB Type-C interface has the following characteristics: 1. The interface size is thinner and smaller; 2. The data transmission speed is faster; 3. The transmission power capability is stronger; 4. Support positive and negative insertion.

[0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the interface definition of the USB Type-C socket. Such as figure 1 As shown, the interface is divided into two rows, and each row has 12 signal pins. Among them, 4 power supply pins are the power supply VBUS of USB, which are A4, B4, A9 and B9. In addition, there are 4 ground pins that are the gro...

Claims

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