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SD/MMC (Secure Digital Memory Card/Multimedia Card) and IIC (Inter-Integrated Circuit) slave control equipment, and control method and control system thereof

A technology for controlling equipment and control methods, which is applied in the field of control systems, can solve problems such as increasing bus costs, and achieve the effects of reducing costs, saving hardware pin resources, and saving hardware pin resource occupation

Active Publication Date: 2013-07-24
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, although the existing IIC and SD / MMC technologies are very mature, because they are two independent technologies, the IIC bus and the connection bus of the SD / MMC card need the hardware of the respective control units when they are applied. pin resources, which increases the cost of using both buses simultaneously

Method used

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  • SD/MMC (Secure Digital Memory Card/Multimedia Card) and IIC (Inter-Integrated Circuit) slave control equipment, and control method and control system thereof
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  • SD/MMC (Secure Digital Memory Card/Multimedia Card) and IIC (Inter-Integrated Circuit) slave control equipment, and control method and control system thereof

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Embodiment Construction

[0023] see figure 1 , figure 1 It is a structural schematic diagram of the control device of the SD / MMC card and the IIC slave of the present invention.

[0024] The control equipment of described SD / MMC card and IIC slave comprises: control unit 11, SD / MMC card 12, and IIC slave 13, described control unit 11 has first interface pin 110, described SD / MMC card 12 and the IIC slave 13 are connected to the control unit 11 by multiplexing the first interface pin 110 .

[0025] Wherein, the control unit 11 may be an MCU (Micro Control Unit), or other processing chips realized by FPGA, and the like.

[0026] The SD / MMC card 12 is an SD card or an MMC card, which is a storage chip with the same interface pin design.

[0027] The IIC slave 13 refers to a device that realizes interconnection and control with the control unit 11 through IIC. The slave is relative. For other devices, this device can also be a slave.

[0028] For the IIC slave 13, its main pins for data transmission g...

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Abstract

The invention provides an SD / MMC (Secure Digital Memory Card / Multimedia Card) and IIC (Inter-Integrated Circuit) slave control equipment, and a control method and a control system thereof. The equipment comprises a control unit, an IIC slave and an SD / MMC card. The control unit is provided with first interface pins. The SD / MMC card and the IIC slave are connected with the control unit through the first interface pins. The SD / MMC and IIC slave control equipment, and the control method and the control system thereof have the advantages that the hardware pin resources of the control unit which are occupied by an IIC bus and an SD / MMC connecting bus can be saved and the cost of simultaneous use of the two kinds of buses can be reduced.

Description

technical field [0001] The invention relates to the technical field of integrated chip control, in particular to a control device for an SD / MMC card and an IIC slave, a control method and a control system thereof. Background technique [0002] The SD card (Secure Digital Memory Card) technology is developed based on the MMC card (MultiMedia Card) format. The size of the SD card is similar to that of the MMC card. Accommodate larger capacity storage units. SD cards and MMC cards are upwardly compatible, that is to say, MMC cards can be accessed by new SD devices, but SD cards cannot be accessed by MMC devices. The appearance of the SD card adopts the same guide rail design as the thickness of the MMC card, and the structure of the SD card makes the SD device suitable for the MMC card. [0003] At present, SD / MMC cards have been widely used in MP3 players, digital video cameras, digital cameras, etc., and are also used in notebook computers. The SD / MMC memory card, the size...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 刘杰胡向军
Owner ZHUHAI JIELI TECH
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