Flash memory card and its card-reading apparatus socket and data-transmission method

Abstract

The invention discloses a flash memory card and a plug for a reading equipment and a data transmission method, the flash memory card is provided with at least a group of expansion base pins, and an expansion contact pin corresponding to the expansion base pin on the plug of the reading equipment; after the flash memory card inserts the plug of the reading equipment, a main base pin and the contact pin contact with each other to form a main line transmission channel, the expansion base pin and the expansion contact pin contact with each other to form an expansion main line transmission channel; the reading equipment transmits directive orders to the flash memory card through the main line transmission channel, and instructs the usage modes of the main line transmission channel and the expansion main line transmission channel; the reading equipment and the flash memory card carry on the data transmission through the main line transmission channel and / or the expansion main line transmission channel based on the usage modes. The flash memory card of the invention is characterized in having the flexible main line transmission channel working mechanism, and greatly raising the maximum data transmission speed which could be provided corresponding to the commonly flash memory card interface.

Description

technical field [0001] The invention relates to the field of mobile memory cards, in particular to a flash memory card, a card reading device socket and a data transmission method thereof. Background technique [0002] Based on its superior storage performance, flash memory cards have been widely used at present, and commonly used flash memory cards include secure data flash memory cards (SD, Secure Digital Memory Card), multimedia flash memory cards (MMC, Multiple Media Card) and the like. [0003] The following takes an SD card as an example to briefly describe the basic structure of an existing flash memory card. [0004] figure 1 It is a structural diagram of an SD card, mainly including: an interface 11 , a controller 12 , a register 13 , a memory 14 and a bus driver circuit 15 . [0005] ① The above-mentioned interface 11 is the card physical interface defined by the specification, and the SD card can communicate with the external card reading device through the inte...

AI Technical Summary

Problems solved by technology

[0014] Although the data width of the flash memory card bus has expanded a lot, the maximum data transmission speed provided by the flash memory card interface is still very limited, which cannot meet the application requirements in some high-end applications, and because the flash memory card interface only includes a set of pins , all data transmission is carried out through the bus transmission path formed by this group of pins, so that the working mechanism of the bus transmission path of the flash memory card interface is also very simple

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