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Multi-channel flash memory transmission controller, chip and storage device

A technology of flash memory transmission and storage device, applied in the field of storage medium management device, to achieve the effect of improving read and write speed

Inactive Publication Date: 2006-06-21
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After deducting the overhead of the USB protocol, the actual reading and writing speed is as high as nearly 48MB / s. Therefore, the reading and writing speed of the existing dual-channel transmission mechanism is the bottleneck of the speed improvement of the U disk.

Method used

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  • Multi-channel flash memory transmission controller, chip and storage device
  • Multi-channel flash memory transmission controller, chip and storage device
  • Multi-channel flash memory transmission controller, chip and storage device

Examples

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Embodiment Construction

[0020] refer to figure 1 , figure 1 It is a structural block diagram of a four-channel flash memory transfer controller according to an embodiment of the present invention. The four-channel flash memory transmission controller 10 is located in the application chip, and the application chip can be used in storage devices such as U disks. The controller 10 includes a master control state machine 11 , a data bus control unit 12 and a control bus control unit 13 . The other two units 12 , 13 are controlled by the master control state machine 11 , and the other two units 12 , 13 return required information to the master control state machine 11 . In order to realize four-channel transmission, in this embodiment, the control bus control unit 13 is connected to four NAND flash memory (hereinafter referred to as flash memory) through a group of multiplexing control bus 14, and the data bus control unit 12 is connected through four groups of independent The data buses I01-I04 are re...

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Abstract

The invention discloses a multichannel flash memory transmission controller and chip with the controller and storage equipment, which comprises the following parts: main control state set, bus control unit and data bus control unit, wherein the bus control unit sends control signal to several flash memories through a group of multiplying control bus, which returns the state signal to main control state set; the state signal of several flash memories is input in the bus control unit at line pattern through multiplying control bus; several groups of individual data bus transmits data to the data bus control unit simultaneously. The invention improves the reading and writing speed of flash memory greatly.

Description

technical field [0001] The present invention relates to a storage medium management device, in particular to a flash memory management device; more specifically, to a multi-channel flash memory transmission controller, a chip including the controller and a storage device. Background technique [0002] As the main storage medium of the U disk, the transmission speed of the NAND flash memory (Nand Flash) itself is not high, and additional waiting time is required for operations such as reading and writing the flash memory. Therefore, in the application of high-speed U disk, in order to improve the transmission speed of U disk, the latest technology is to use a dual-channel transmission mechanism. [0003] The dual-channel transmission mechanism is similar to the single-channel transmission. It is equivalent to having two separate single-channels, and each channel has a set of independent data address instruction buses and a set of independent control buses. The dual-channel t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38
Inventor 张浩杨作兴陈东瑛温婷婷吴大斌
Owner VIMICRO CORP
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