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Electronic device capable of multiplexing SD interface and USB interface and method

A USB interface and interface multiplexing technology, applied in the field of information processing, can solve problems such as inability to meet functional requirements, and achieve the effect of meeting functional requirements, saving costs, and reducing pin settings

Inactive Publication Date: 2017-12-01
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide an electronic device and method for multiplexing an SD interface and a USB interface that not only saves costs but also meets the functional requirements for the problem of saving costs and meeting functional requirements

Method used

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  • Electronic device capable of multiplexing SD interface and USB interface and method
  • Electronic device capable of multiplexing SD interface and USB interface and method
  • Electronic device capable of multiplexing SD interface and USB interface and method

Examples

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Embodiment Construction

[0018] see Figure 4 , providing an embodiment of an electronic device multiplexing an SD interface and a USB interface, including: a processor 101, a state detection device 102, an SD controller 104, a USB controller 103, an interface multiplexing control device 105, an SD interface 107, and USB interface 108, SD interface 107 includes command pin Command, clock pin Clock and data pin Data0, USB interface 108 includes negative pole signal pin D- and positive pole signal pin D+, one side of interface multiplexing control device 105 includes The first pin T1, the second pin T2, the third pin T3 and the fourth pin T4.

[0019] The processor 101 is connected to the state detection device 102, and the state detection device 102 is also connected to the other side of the interface multiplexing control device 105 through the SD controller 104 and the USB controller 103 respectively, and the first side of the interface multiplexing control device 105 side The pin T1 is connected wit...

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Abstract

The invention relates to an electronic device capable of multiplexing an SD interface and a USB interface and a method. Multiplexing is carried out on a third pin of an interface multiplexing control device, namely the third pin is both connected to a data pin of the SD interface and a negative signal pin of the USB interface, and the method does not need to respectively arrange the pins to the interface multiplexing control device, the data pin of the SD interface and the negative signal pin of the USB interface, so that the pins multiplexing the interface multiplexing control device are reduced, and thus the pins of the electronic device capable of multiplexing the SD interface and the USB interface are reduced and the cost is saved; and furthermore, the interface multiplexing control device switches a connection between the SD interface and an SD controller and a connection between the USB interface and a USB controller according to a state detection result of the SD interface and a state detection result of the USB interface, so that the switching of the SD interface and the USB interface can be realized, and thus SD interface communication and USB communication can be both realized, and the different functional requirements are met.

Description

technical field [0001] The invention relates to the field of information processing, in particular to an electronic device and method for multiplexing an SD interface and a USB interface. Background technique [0002] With the development of science and technology, users have higher and higher requirements for consumer electronics products. Consumer electronics products need to meet a variety of different functions, and the number of peripherals connected (including USB devices and SD cards, etc.) is also increasing. Correspondingly, The number of pins required is also continuously increasing, and at the same time, the body needs to be small and low cost. In order to achieve more functions, it is necessary to design more pins for consumer electronic products, for example, a small portable speaker, and the interfaces that support peripherals include SD interface and USB interface, such as figure 1 and 2 As shown, the SD interface supports at least three pins, which are the ...

Claims

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Application Information

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IPC IPC(8): G06F13/38
CPCG06F13/382
Inventor 蔡秉铨
Owner ZHUHAI JIELI TECH
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