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Direct internal storage access system and method of multiple path data

A memory access, multi-channel technology, applied in the field of multi-channel data direct memory access system, can solve the problems of equipment performance improvement and other problems, and achieve the effect of speeding up the processing speed

Inactive Publication Date: 2004-02-11
HISILICON TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] In the prior art, there is no direct multi-channel data access method between the inside of the chip and the off-chip main memory, and single-channel access to data between the inside of the chip and the off-chip main memory is used to improve device performance in broadband applications. hinder

Method used

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  • Direct internal storage access system and method of multiple path data
  • Direct internal storage access system and method of multiple path data
  • Direct internal storage access system and method of multiple path data

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Embodiment Construction

[0047] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0048] according to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 :

[0049] In the present invention, as figure 1 , figure 2 and Figure 6 As shown, the direct access processing module includes a receiving DMA module 21 and a sending DMA module 22; there are FREE_FIFO memory, DONE_FIFO memory and configuration RAM memory in the receiving DMA module 21, and control logic for access control, and the FREE_FIFO memory is used to store idle Queue descriptor Free QueueDescriptor, the DONE_FIFO memory is used to store the completion queue descriptor;

[0050] In the sending DMA module 22, there are PENDING_FIFO memory, DONE_FIFO memory and configuration RAM memory, and control logic for access control, the PENDING_FIFO memory is used to store the qu...

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Abstract

This invention relates to a multichannel data direct internal memory access system and a method of a digital information transmission which receives data of every channel discontinuously with a DMA receive module utilizing data structure information of idle array descriptors and finished array descriptors, when numbers of the idle array descriptors are less than a set threshold in FREE-FIFO, a module is controlled from the idle array outside the chip by the bus interface control module according to the internal read-idle array pointer timely regulated. When sending DMA module, the array descriptor and arranged RAM, and the data structure information of the data packet descriptor to be sent is sent by a DMA module to multichannel.

Description

technical field [0001] The invention relates to the transmission of digital information, in particular to a multi-channel data direct memory access system and method. Background technique [0002] In the prior art, there is no direct multi-channel data access method between the chip internal and the off-chip main memory, and the single-channel data access between the chip internal and the off-chip main memory is used to improve device performance in broadband applications. hinder. Contents of the invention [0003] The object of the present invention is to provide a multi-channel data direct memory access system and method for realizing direct access of multi-channel discontinuous data between the inside of the chip and the main memory outside the chip. [0004] The technical scheme adopted in the present invention is: this multi-channel data direct memory access system is characterized in that: it includes a direct access processing module, and the direct access processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/02
Inventor 胡骎程明强
Owner HISILICON TECH
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